Answer:
Keratinization and cornification are both processes by which epithelial cells become hardened and flattened, but they differ in their specific context and characteristics.
Keratinization refers to the process by which cells in the epidermis of the skin become keratinized or filled with the protein keratin. This process occurs as cells in the lower layers of the epidermis divide and migrate upward, undergoing various changes in cell structure and protein synthesis. Eventually, the cells flatten and die, forming a layer of dead cells that provide a protective barrier against the external environment. Keratinization is a continuous process that occurs throughout the life of the skin.
Cornification, on the other hand, is a specific type of keratinization that occurs in specialized epithelial cells called corneocytes. These cells are found in the outermost layer of the skin, the stratum corneum, and are responsible for providing the main barrier function of the skin. During cornification, the corneocytes undergo a complex process of protein synthesis and modification, resulting in the formation of a tough, impermeable layer of cells. Unlike keratinization, cornification is a terminal differentiation process, meaning that the cells are no longer able to divide or perform other cellular functions.
What is NOT a way that businesses can become more sustainable?
moving to a service economy
engaging in greenwashing
considering the entire life cycle of a product
encouraging take-back programs
Businesses can improve their sustainability by using greenwashing techniques.
What Sets Sustainable & Environmentally Friendly Products Apart?A product is said to be "eco-friendly" if it doesn't hurt the environment, which is a very clear-cut definition. However, sustainability encompasses a wide range of challenges and activities that, when their requirements are addressed, do not have an impact on future generations.
What attributes make someone resilient?Contrary to common assumption, living sustainably doesn't necessitate depriving yourself of comforts; rather, it merely requires that you are aware of how much you use of the environment's resources and that you minimize waste. All of our actions taken together will have a significant effect.
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Answer:
engaging in greenwashing
Explanation:
answer given on failed quiz lol
which of the following facts underlies the application of rna interference in the treatment of disease?
Sometimes it is possible to halt faulty gene activity from producing undesirable proteins.
What happens during RNA interference?RNAi stands for "RNA interference," a process in which tiny RNA fragments can stop the translation of proteins by attaching to the messenger RNAs that encode those proteins. RNA interference is a natural mechanism that affects immunity and the control of protein synthesis.
What is an example of RNA interference?A method of producing highly effective and purified siRNAs directly from Escherichia coli cells is another example of RNAi technology. This method was developed in response to the unexpected finding that ectopic expression of p19, a plant viral siRNA-binding protein, helps to stabilize a cryptic siRNA-like RNA species in bacteria.
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Directions: A cytogeneticist has collected tissue samples from members of a certain butterfly species. Some of the butterflies were located in Canada, and others were found in Mexico. Through karyotyping, the cytogeneticist discovered that chromosome 5 of the Canadian butterflies had a large inversion compared with chromosome 5 of the Mexican butterflies. The Canadian butterflies were inversion homozygotes, whereas the Mexican butterflies had two normal copies of chromosome 5. 1. Draw and label a diagram to visualize the inversion in the chromosome 5 of the Canadian butterflies compared to the chromosome 5 of the Mexican butterflies. 2. If the Canadian and Mexican butterflies were to mate and produce offspring, do you think they would produce phenotypically normal offspring? Explain you answer in your own words and provide evidence for your thinking. 3. If the Canadian and Mexican butterflies were to mate and produce offspring, do you think the offspring would be fertile? Explain you answer in your own words and provide evidence for your thinking.
The offspring produced by the Canadian and Mexican butterflies may not be phenotypically normal.
Why won't the offsprings be phenotypically normal?The inversion in the chromosome 5 of the Canadian butterflies can disrupt gene function and expression. Inversion heterozygotes, which carry one normal chromosome 5 and one with the inversion, may have reduced fertility or viability due to the formation of abnormal gametes during meiosis. Inversion homozygotes, which carry two copies of the inverted chromosome, are likely to be inviable or sterile due to the disruption of gene function caused by the inversion. Thus, the presence of the inversion in the Canadian butterflies could affect the fitness of their offspring.
The fertility of the offspring produced by the Canadian and Mexican butterflies would depend on whether they inherited the normal chromosome 5 from the Mexican parent or the inverted chromosome 5 from the Canadian parent. Offspring that inherit the normal chromosome 5 from the Mexican parent would be fertile. However, those that inherit the inverted chromosome 5 from the Canadian parent may have reduced fertility or viability due to the formation of abnormal gametes during meiosis, as discussed in the previous question. Inversion homozygotes are likely to be inviable or sterile, so any offspring that inherit two copies of the inverted chromosome 5 would be unlikely to be fertile.
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Karina is looking at cells under the microscope. She observes four members of the phylum ciliophora. How are the four cells different?.
Members of the phylum Ciliophora are characterized by the presence of cilia, which are hair-like structures that are used for movement and feeding.
How are the four cells different?phylum Ciliophora can differ in following ways:
Members of the phylum Ciliophora can vary in size from less than 50 micrometers to several millimeters in length.
The shape of ciliates can be highly variable from spherical to elongated or even flattened.
The pattern and distribution of cilia can differ among ciliates, with some having many short cilia over their entire body whereas others have fewer and longer cilia in specific locations.
The internal structure of ciliates can also differ with some having specialized organelles for feeding or defense and others having complex nuclei with the multiple copies of their genome.
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Sheila plants white flowers and collects the seeds from all the plants once they mature. She plants the seeds from her flowers, expecting plants with white flowers to grow, but some of the offspring have purple flowers.
How could parent plants that have white flowers produce offspring with purple flowers?
Answer: There could be a dominate purple gene in the white flower
Explanation:
Why is carbon the first element of life?
Answer:
Explanation:
The main reason that life on Earth is carbon-based is because of the unique properties of the carbon atom. Carbon atoms can form strong bonds with other atoms, including other carbon atoms, which allows for the formation of complex molecules like DNA and proteins. Additionally, carbon atoms are relatively small, which makes them ideal for forming the millions of intricate chemical bonds and reactions that are necessary for sustaining life.
Describe the structures of chitin and cellulose.
Chitin and cellulose, play crucial structural roles in nature. They share certain structural similarities, but they also have some significant structural variances.
What kind of a structure is chitin?Figure 2. Chitin is a polysaccharide made up of 1-4 connected 2-acetamido-2-deoxy-d-glucopyranose molecules. It is safe to assume that chitin is situated between cellulose and collagen on the evolutionary map.
What are the cellulose's structural components?Long polymer chains of glucose units held together by a beta acetal bond make up the structure of cellulose. A very small section of a cellulose chain can be seen in the image on the left.
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Ammonia is created in the haber process in a rigid container (nitrogen gas plus hydrogen gas react to form ammonia gas). 2 moles of hydrogen gas are mixed with 4 moles of nitrogen gas. The initial pressure exerted on the container is 5 atm. Assuming the reaction runs to completion, what will the pressure (in atm) on the vessel be after the reaction takes place?.
The container's interior will have a final pressure of 5 atm.
The pressure of the gas is directly proportional to the quantity of gas present, according to the universal gas equation.
Alternatively, P is related to n.
Here, the reaction's equation is 2N2 + 3H2 = 2 NH3.
As a result, 3 moles of hydrogen gas and 2 moles of nitrogen gas react.
As a result, 7.5 moles of hydrogen gas and 5 moles of nitrogen gas react.
Because it is equal to the moles of nitrogen gas used, the amount of ammonia gas produced is 5 moles.
Moles = 2.5 moles of hydrogen gas remain in the container.
Hence, there were 15 moles of gas in total when the container first opened.
Finally, there are 7.5 moles of gas total in the container.
Now p1/n1=p2/n2
The final pressure is equal to 5 atm
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Wednesday
Use the food web shown on page 6 to fill in the missing information.
CAUSE
All the grass in an area dies.
The frogs leave the ecosystem.
All the snakes disappear.
Week 3
EFFECT
starve.
The frogs, mice, and sparrows have nothing to eat.
The rabbit population grows.
The effect of the grass dying would be that the animals that feed on insects would have nothing to eat
How to discuss the effect of the dead grass on the ecosystemEFFECT:
The frogs, mice, and sparrows have nothing to eat. They are likely to starve because they rely on the grass as a source of food. The disappearance of the grass has disrupted the food chain in the ecosystem, causing a cascading effect on the other organisms.
The rabbit population grows. With the disappearance of snakes and the departure of frogs, there are fewer natural predators for rabbits, and their population can increase. However, if the lack of food persists, the rabbit population may also decline, as they rely on vegetation for sustenance.
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Which of the following is a negative consequence associated monoculture?
A) Decreased yield
B) Increased crop species
C) Ecosystem stability
D) Reduced biodiversity
Answer:
Reduced biodiversity
Explanation:
took the test
Mastering A and P for the LAB - 2021 Spring Term (0) Lab 07: The Skeletal System Art-Labeling Activity: External view of the skull Drag the appropriate labels to their respective targets. Reset Help Frontal bone Parietal bone Sphenoid bone Temporal bone Occipital bone Emold bone Palatine bone Lacrimal bone Nasal bones Zygomatic bono Interior rasal concha Vomer bone Mandible Butimi Previous Answers Request new x incorrect, Try Again: 5 attempts remaining Ba S 2 3 4 5 6 7
The labelled diagram of external surface of the human skull is attached below.
What are the bones present on the external surface of the skull?The external view of the skull includes several bones that protect and support the brain, as well as provide attachment points for the muscles of the head and neck. Some of the major bones that can be seen on the external surface of the skull include:
Frontal bone: the bone that forms the forehead and the upper part of the eye sockets.
Parietal bones: two large bones that form most of the top and sides of the skull.
Temporal bones: two bones that form the lower sides of the skull, including the ear canals and the joints with the lower jaw.
Occipital bone: the bone that forms the back of the skull, including the base and the foramen magnum, through which the spinal cord passes.
Sphenoid bone: a complex bone that forms part of the base of the skull and is involved in the structure of the eye sockets and the nasal cavity.
Ethmoid bone: a delicate bone that forms part of the anterior base of the skull and is involved in the structure of the nasal cavity and the eye sockets.
Palatine bone: two small bones that form the posterior part of the hard palate and the floor of the nasal cavity.
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The unlabeled diagram and it's labelled diagram has been attached.
How does the movement of water in the xylem contributes to bulk flow in the phloem?
Answer:
The bulk flow in the xylem occurs via a negative fluid pressure due to transpiration, while the bulk flow in the phloem occurs via hydrostatic pressure created by the sap present on the end of sieve tube.
Explanation:
The reason is that the increased solute concentration causes water to move by osmosis from the xylem into the phloem.
relative to other substances, which of the following would be classified as a low-risk teratogen for pregnant women?
It is difficult to provide a definitive answer to this question, as the risk of teratogenic effects depends on many factors, including the dose, frequency, and timing of exposure, as well as individual differences in susceptibility.
That being said, substances that are generally considered low-risk teratogens include caffeine, acetaminophen (Tylenol), and some antibiotics (such as penicillin and amoxicillin). However, it is important to note that even substances with a low risk of teratogenic effects should only be taken during pregnancy under the guidance of a healthcare provider.
Which statement accurately describes sickle cell anemia? (1 point)
O It affects the functions of red blood cells of humans.
O It emerges in humans without the influence of mRNA.
O It emerges in humans without the influence of DNA.
O It affects transcription and translation in humans.
It affects the function of a person's red blood cells and accurately describes sickle cell anemia.
What are the symptoms of sickle cell disease?Sickle cells, which block blood flow to organs, deprive affected organs of blood and oxygen. Sickle cell anemia also has a chronically low level of oxygen in the blood.
People with sickle cell disease inherit two defective hemoglobin genes called hemoglobin S - one from each parent. A person has sickle cell trait when the hemoglobin S gene is inherited from only one parent and the normal hemoglobin gene - hemoglobin A - from the other parent.
In a recent study, the life expectancy of adults with SCD was estimated to be 5 years, about 20 years shorter than that of normal adults without SCD.
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Humans will reach zero population growth when
Question options:
birthrate equals death rate.
carrying capacity is reached.
humans stop giving birth.
world population stops growing.
Which of the following is a true statement?
1. All organisms generate waste and dead material that is recycled by decomposers.
2. All organisms are considered decomposers in aquatic ecosystems since all organisms are underwater.
3. All organisms rely on photosynthesis, which is done by decomposers.
4.All organisms rely on photosynthesis, which is done by decomposers.
5.All organisms in an ecosystem eat decomposers to survive.
100!!! Points Worth if answered! <3
Answer:
1. All organisms generate waste and dead material that is recycled by decomposers.
Explanation:
2 Is incorrect because not all organisms are underwater.
3 Is incorrect because not all organisms are plants.
4 Is incorrect
which of the following plays a role in emotional sweating (sweating due to stress or strong emotion, not thermoregulation)?
Eccrine glands plays a role in emotional sweating (sweating due to stress or strong emotion, not thermoregulation).
What is a Gland?
This an organ that makes and puts out hormones that do a specific job in your body.
Eccrine sweat glands on the other hand are the major sweat glands of the human body, found in virtually all skin, with the highest density in palm and soles and they are involved in emotional sweating such as those due to stress or strong emotion thereby makin g it the correct choice.
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when we applied the argument form reductio ad absurdum (raa) to the ethical doctrine discussed in the second misconception about ethics what was our second step? please be sure to include an example (this doesn't have to be the one given in lecture).
Answer:
Explanation:
The second step when applying the argument form reductio ad absurdum (RAA) to the ethical doctrine discussed in the second misconception about ethics is to assume the opposite of the original position, or to assume the negation of the ethical principle. Then, we look for a contradiction or an absurd conclusion that follows from this assumption, which shows that the original principle must be true.
As an example, let's take the ethical principle "It is always wrong to lie." If we apply RAA to this principle, we would assume its negation: "It is not always wrong to lie." Then, we would look for a scenario where this assumption leads to a contradiction or an absurd conclusion.
Suppose that we take the scenario of a society where everyone lies all the time, and it is accepted as the norm. In this society, lying is not seen as wrong, and there are no negative consequences for lying. However, if we take the assumption that "It is not always wrong to lie," we arrive at the absurd conclusion that in this society, telling the truth is always wrong. This is a contradiction because we know that telling the truth is a good thing and is necessary for trust and communication in any society.
Therefore, by assuming the negation of the ethical principle and finding an absurd conclusion, we have shown that the original principle must be true. In this case, we have shown that "It is always wrong to lie" is a valid ethical principle.
QUESTION 3
Modern cell theory is based on which three statements?
A. All cells have a nucleus.
B. The cell is the smallest living unit of all organisms.
C. Eukaryotic cells have evolved from prokaryotic cells.
D. All cells contain the same organelles.
OE. All living things are made of at least one cell.
OF. All cells come from other pre-existing cells.
The three statements on which modern cell theory is based are:
All living things are made of at least one cell.
The cell is the smallest living unit of all organisms.
All cells come from other pre-existing cells.
The options A, C, and D are not correct statements of modern cell theory.
How can septic tanks potentially contaminate water?
Wastewater flows into home septic tanks instead of city storage.
Septic tanks leak into coastal waters due to rising sea levels.
Using septic tanks near urban areas
Using septic tanks in rural areas
Water contamination can occur when septic tanks leak into coastal waters due to rising sea levels. Option 2 is the correct answer.
How can Septic Tanks cause Contamination?Septic tanks have the potential to contaminate water in several ways:
Failure to properly maintain and pump the septic tank: Over time, sludge can build up in the tank, reducing its capacity to treat wastewater. If the tank becomes too full, untreated or partially treated waste water may overflow into the surrounding soil and potentially contaminate nearby groundwater sources.Inadequate drainage field: A septic tank must be connected to a properly designed and installed drainage field, which allows treated wastewater to percolate into the soil and be further filtered and purified before it enters groundwater or surface water sources. If the drainage field is inadequate, poorly designed, or installed in unsuitable soils, wastewater may not be properly treated and could potentially contaminate nearby water sources.Location: The location of a septic tank is critical in preventing contamination of nearby water sources. If a septic tank is located too close to a well, surface water source, or other drinking water supply, it could potentially contaminate the water if it fails or overflows.Use of septic tanks in areas with high water tables or flooding: Septic tanks should not be installed in areas with high water tables or frequent flooding as this can cause the tanks to overflow, leading to untreated or partially treated wastewater to contaminate nearby water sources.Using septic tanks near coastal areas: Septic tanks located near coastal areas can potentially leak untreated or partially treated wastewater into the ocean or other bodies of water due to rising sea levels or storm surges. This can lead to the contamination of the coastal waters and harm marine life and public health.In summary, proper maintenance, location, and design of septic systems are critical to preventing contamination of nearby water sources.
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select the correct partial path. this path is part of the complete blood flow pathway. you should be able to trace flow starting in any location. view available hint(s)for part h select the correct partial path. this path is part of the complete blood flow pathway. you should be able to trace flow starting in any location. blood moves from the pulmonary trunk, through the pulmonary arteries, and into the pulmonary capillaries. from there it moves through the pulmonary veins into the right atrium. blood moves from the aorta, through smaller systemic arteries, and into systemic capillaries. from there it moves through systemic veins, into the right atrium, and through the tricuspid valve. blood from the systemic veins returns to the heart through the left atrium. blood then passes through the mitral valve. blood moves from the pulmonary artery into the left atrium. from there, it passes through the mitral valve into the left ventricle.
Blood moves from the pulmonary artery into the left atrium. From there, it passes through the mitral valve into the left ventricle.
What is blood?Blood is a fluid connective tissue that circulates throughout the body, providing oxygen and nutrients to tissues and organs while also removing waste products. It is composed of several different types of cells, including red blood cells, white blood cells, and platelets, suspended in a liquid called plasma. Blood also plays a vital role in the immune system, helps to regulate body temperature, and serves as a transport system for hormones, enzymes, and other substances.
Here,
Partial path: Blood moves from the pulmonary artery into the left atrium. From there, it passes through the mitral valve into the left ventricle.
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what is carbon dioxide used for in the chloroplasts of green plants
Carbon dioxide is a crucial reactant for photosynthesis in chloroplasts, providing the carbon atoms that green plants need to build organic compounds. Without carbon dioxide, photosynthesis cannot proceed, and plant growth and survival would be severely limited.
What is Chloroplast?
Chloroplasts are organelles found in plant cells and some protists that are responsible for photosynthesis, the process by which plants convert light energy from the sun into chemical energy in the form of glucose and other organic molecules. Chloroplasts contain a pigment called chlorophyll, which absorbs light energy from the sun and uses it to power the reactions of photosynthesis.
Carbon dioxide is one of the raw materials used by green plants during photosynthesis to produce glucose and other organic molecules. In chloroplasts, the site of photosynthesis in plant cells, carbon dioxide is incorporated into organic compounds through a series of chemical reactions called the Calvin cycle.
During photosynthesis, carbon dioxide enters the chloroplasts through small pores on the leaves called stomata. Inside the chloroplasts, the carbon dioxide is fixed into an organic molecule called ribulose 1,5-bisphosphate (RuBP) by an enzyme called Rubisco. This process is known as carbon fixation. The resulting compound then undergoes a series of reactions, culminating in the production of glucose and other sugars that the plant can use as an energy source or to build more complex molecules.
In summary, carbon dioxide is a crucial reactant for photosynthesis in chloroplasts, providing the carbon atoms that green plants need to build organic compounds. Without carbon dioxide, photosynthesis cannot proceed, and plant growth and survival would be severely limited.
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What is the main point to the article State “Personhood” Laws Threaten Embryonic Steam Cell Research
The main point of the article "State “Personhood” Laws Threaten Embryonic Steam Cell Research" is that the passing of "personhood" laws in some states of the United States, which define life as beginning at conception, poses a threat to embryonic stem cell research. The article argues that these laws could hinder or even criminalize research involving the destruction of human embryos, which is a critical aspect of embryonic stem cell research. The article also discusses the potential consequences of such laws on medical research, including the inability to develop treatments for a wide range of diseases and conditions
Nitrates and phosphates were found in freshwater. which of the following could be the source?
-agriculture
-roofs and lawns
- irrigation
-boating
- factory
- water purification plant
Agriculture is a major source of nitrates and phosphates in freshwater, as these nutrients are commonly used as fertilizers.
What are fertilizers?Fertilizers are substances that are added to soil to enhance plant growth and increase crop yields. They contain essential plant nutrients, such as nitrogen, phosphorus, and potassium, which are required in relatively large amounts. Fertilizers can be applied to soil in various forms, including granular, liquid, and powder.
Nitrates and phosphates are two essential nutrients required by plants and algae for growth. In freshwater environments, nitrates and phosphates can be introduced through various sources such as agricultural runoff.
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Uses of poriferans and Cnidarians
uses of poriferans are :
they are used for cleaning the surfaces as they have better water absorption capacity.they have many medicinal applications such as anticancer, antifungal, antiviral, immunosuppressive, and anthelmintic activities.they are also helpful in protecting the surfaces from scratches.they are best at cleaning spills and soaping up dishes.they also make a nail-polish remover jar.uses of cnidarians are :
cnidarian toxics are used for the design of immunotoxins to treat cancer.they also possess components of innate immunity.the skeletons of cnidarians are used in jewelry.these organisms are a good source of food for humans.they are also helpful in preventing the soil erosion.learn more about cnidarians
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Drag the terms on the left to their matching descriptions on the right. Note that some terms do not have a match. interference A statistical method for testing the fit between observed and expected results. mosaic A structure formed at the spot where crossing over occurs between homologs parental ditype Fungal spores contained in a sac. ascospores An ascus containing spores of four different genotypes. tetratype chiasma The formation of new genetic combinations by exchange of parts between homologous chromosomes. chi-square test The condition in which an individuarexhibits cells with different genotypes. twin spot One crossover along a chromosome makes a second nearby crossover less likely. recombination
Interference:-One crossover along a chromosome makes a second nearby crossover less likely.
Mosaic:-The condition in which an individual exhibits cells with different genotypes
Parental ditype :-An ascus containing spores of two distinct parental genotypes.
Ascospores:-Fungal spores contained in a sac.
Tetratype:-An ascus containing spores of four different genotypes.
Chiasma :-The structure formed at the spot where crossing over occurs between homologs.
Chi-square test:-A statistical method for testing the fit between observed and expected results.
Twin spot:-There is no match for this term.
Recombination :-The formation of new genetic combinations by exchange of parts between homologous chromosomes.
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TRUE OR FALSE the number of receptors for a particular hormone can change due to consistently high or low levels of that hormone, which is referred to as up- and down-regulation.
Number of receptors for particular hormone can change due to consistently high or low levels of that hormone, which is referred as up- and down-regulation : True
What is up- and down-regulation?Downregulation is the process by which cell decreases the quantity of cellular component like RNA or protein, in response to external stimulus. Complementary process that involves increases of such components is called as upregulation.
An example of downregulation is the cellular decrease in expression of specific receptor in response to increased activation by molecule such as hormone or neurotransmitter that reduces sensitivity of the cell to the molecule. This is an example of locally acting mechanism.
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True or false: If false, please make it a correct statement.
The lysosome is the site of synthesis of various large biological molecules.
False. The lysosome is the site of synthesis of various large biological molecules.
Why is the above statement false?The creation of a number of major biological compounds does not take place in the lysosome. Instead, it is an organelle that may degrade and recycle a variety of macromolecules, including proteins, nucleic acids, lipids, and carbohydrates. It is a component of animal cells. Proton pumps that actively transport hydrogen ions into the lysosome maintain the acidic environment necessary for these enzymes to function at their best. Although the lysosome does not participate in the production of new molecules, it is essential for maintaining cellular homeostasis and reducing the buildup of waste products since it breaks down and recycles molecules.
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Two compounds as reactants, be able to provide a balanced ionic formula for the new products if these reactants went through a double replacement chemical reaction. explain.
Ex: Mg(OH)2 +NaCl = MgCl2 +NaOH
Answer:
In the example reaction given, the reactants are Mg(OH)2 and NaCl, and the products are MgCl2 and NaOH. This is a double replacement reaction, which involves the exchange of positive and negative ions between the reactants to form new products.
To balance the ionic formula for the products, we need to make sure that the charges on the cations and anions are balanced. In the products, we have Mg2+ and Cl- ions, which come from MgCl2, and Na+ and OH- ions, which come from NaOH.
We can write the ionic formulas for the reactants as Mg2+(OH-)2 and Na+(Cl-), respectively. When the reaction occurs, the Mg2+ ion and the Cl- ion exchange partner to form MgCl2, and the Na+ ion and the OH- ion exchange partners to form NaOH.
The balanced chemical equation is:
Mg(OH)2 + 2NaCl -> MgCl2 + 2NaOH
The ionic formula for MgCl2 is Mg2+(Cl-)2, which shows that each Mg2+ ion is paired with two Cl- ions to form a neutral compound. The ionic formula for NaOH is Na+(OH-), which shows that Na+ is paired with OH- to form a neutral compound.
Overall, the balanced equation and ionic formulas show that during the reaction, the Mg2+ ion and the Cl- ion exchanged partners, as did the Na+ ion and the OH- ion, to form the new products.
elect features of protists in the supergroup excavata. multiple select question. they move using flagella. many possess a feeding groove. they are all photosynthetic. some have lost their nucleus.
The features of subgroup Excavata include presence of flagella, and also a feeding groove. Thus, the correct options are A and B.
What are Protists?A protist is any eukaryotic organism which is not an animal, plant, or fungus. While, it is most likely that the protists share a common ancestor, the exclusion of other eukaryotic organisms means that the protists do not form a natural group, or clade.
Excavata are a supergroup of protists which are defined by an asymmetrical appearance within a feeding groove which is excavated from one side and it includes various types of organisms which are usually parasitic, photosynthetic and heterotrophic predators. The organisms of excavata group has a mitochondria and a well-defined nucleus.
Therefore, the correct options are A and B.
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