Which of the following statements is correct about the hierarchy of the taxonomic system currently used to classify organisms?

Question 19 options:

Many different classes of organisms belong to the same genus.


Many different kingdoms of organisms belong to the same phylum.


Many different orders of organisms belong to the same species.


Many different families of organisms belong to the same order.







Which kingdom includes an organism that can survive by photosynthesis in the presence of light or by consuming organic material in dark conditions?

Question 18 options:

Animalia


Protista


Plantae


Fungi






Examine the images here for two tree species. Which taxonomic grouping defines the commonality of these two trees?



Question 17 options:

These trees share the same genus but not the same species.


The trees share all of the taxa involved in classification.


These trees share the same genus but not the same phylum.


These trees share the same species but not the same genus.






Scientists often use a cladogram such as the one below to illustrate evolutionary relationships.



Which is the best explanation for separating reptiles from mammals?

Question 14 options:

the presence of an amniotic membrane in reptiles that is not found in mammals


the presence of hair in reptiles that is not found in mammals


the presence of an amniotic membrane in mammals that is not found in reptiles


the presence of hair in mammals that is not found in reptiles






Scientists often use a cladogram such as the one below to illustrate evolutionary relationships.



Which is the best explanation for separating reptiles from mammals?

Question 14 options:

the presence of an amniotic membrane in reptiles that is not found in mammals


the presence of hair in reptiles that is not found in mammals


the presence of an amniotic membrane in mammals that is not found in reptiles


the presence of hair in mammals that is not found in reptiles






A group of scientists discovered a new organism that is composed of many cells, gets its nutrition from decaying organisms, and has cell walls. To what kingdom would the new organism belong?

Question 12 options:

Plantae


Animalia


Fungi


Protista






The following cladogram shows the evolutionary relationships among five types of birds.



According to this cladogram, oystercatchers are more closely related to flamingos than to penguins.

Which of the following statements provides the best justification for this relationship?

Question 10 options:

The branch of the cladogram with oystercatchers is closer to the branch with flamingos than to the branch with penguins.


Both oystercatchers and flamingos are less closely related to the outgroup than penguins are.


Oystercatchers share a more recent common ancestor with flamingos than with penguins.


Oystercatchers share a common ancestor with flamingos but not with penguins.






Which statement best explains why a third domain, Archaea, was added to the original two domains of Bacteria and Eukarya?

Question 3 options:

Scientists discovered that some prokaryotes have cell walls.


Scientists discovered that eukaryotes have cell walls.


Scientists discovered that some prokaryotes live in extreme environments.


Scientists discovered that eukaryotes are unicellular.






Both plants and blue-green algae are photosynthetic but are classified as separate kingdoms. Which statement identifies a characteristic that distinguishes blue-green algae from plants?

Question 2 options:

Plants lack membrane-bound organelles and blue-green algae contain membrane-bound organelles.


Plants have specialized tissues and organs and blue-green algae do not.


Blue-green algae use their chlorophyll differently from plants.


Blue-green algae are better than plants at moving from place to place.

E) all of these.

Hope it helps u.

Answer:

one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.

(B)

Explanation:

Answer:

c different or alternate forms of a trait

Explanation:

Answer:

Explanation:

Millions of plants, animals, and microorganisms found on earth, have been identified by the scientists while many new species are still being discovered around the world. Therefore, to classify these newly discovered species, with new characters, new systems of classification have to be devised every now and then. This creates the requirement to change the existing systems of classification.

Answer:

More diverse and complex organisms are being discovered. 

Explanation:

Answer:

the cooler air is H, and the hotter air is L

Explanation: Since the cooler air is less dense it has lower pressure, which is why it sinks. the hotter air becomes less dense because the molecules are faster and spread out hence it has less pressure and rises

The statement that explains why carbon-14 cannot be used to date rocks is : ( C ) Carbon-14 can be used only to date the remains of organisms

Carbon-14 dating ( radiocarbon dating ) is used to determine the age of a material or substance which must be part of a living organism that has once existed or is still existing.

Carbon -14 dating cannot be used for determining the age of ancient rocks because of :

Hence we can conclude that The statement that explains why carbon-14 cannot be used to date rocks is : Carbon-14 can be used only to date the remains of organisms.

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Answer:

the answer is C

Explanation:

Answer:

False

Explanation:

An enzyme consists of two sites. (See attached file)

Many chemicals inhibit the activity of enzymes by binding to the allosteric site. This inhibition is called allosteric inhibition.

[tex]\rule[225]{225}{2}[/tex]

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plant cells have large central _____ where water, salts, and sugars are stored and where materials are broken down and recycled with enzymes similar to lysosomes in animal cells

ans:- vacuole

Answer:

Plant cells have large central _Vacoule _____ where water, salts, and sugars are stored and where materials are broken down and recycled with enzymes similar to lysosomes in animal cells.

The aseptic technique that would reduce the chance of bacteria on a lab table contaminating a lab notebook is wiping off the surface of the lab table with a disinfectant, tying back long.

The correct option is B.

Bacteria is a prokaryotic microorganism that is found in every possible place on the earth.

Bacteria can cause many diseases in plants and animals.

It is important to clear things to prevent bacteria.

Thus, the correct option is b, To wipe off the surface of the lab table with a disinfectant tying back long.

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The resource used diesel to drive the truck is a non-renewable resource. Therefore, option "C" is correct.

Non-renewable resources are resources that cannot be acquired again once consumed. The sources of these resources are limited. It required millions of years to form them again. Examples of non-renewable resources are fossil fuels and natural gas.

Non-renewable resources emit high amounts of carbon footprints. Nonrenewable resources are cost-effective. Replacement of non-renewable resources is the need of the hour as they are exhausting at a higher rate. Energy sources such as solar energy, hydropower, wind energy, and nuclear energy are some renewable sources of energy.

Non-renewable resources should be used wisely.

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Answer:

Flower color is a characteristic

Explanation:

hope this helps you find your answer.

The difference between Prokaryotic and eukaryotic cells maze are organisms lacking and possessing nucleus respectively.

The complete question is: differentiate between Prokaryotic and eukaryotic cells maze.

These are organisms which have false nucleus. This means that the organisms don't have nucleus at all in their cell. Bacteria is an example of prokaryotes

Eukaryotes on the other hand are organisms which possess true nucleus. This means that they have real nucleus embedded in their protoplasm

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Answer:

I think it's D

Explanation:

i am not really sure

Scientific advances and technologies make humans more resilient and resistant as a species. It is because medicines can be used to treat diseases.

Scientific advances and technologies allow us to fight against different diseases and improve our quality of life.

In consequence, humans are now more resistant to diseases and more resilient to different events.

Moreover, the advent of new technologies such as the CRISPR-Cas9 genome editing system might even allow us to modify our DNA in order to direct the evolution of the species.

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Answer:

The answer is  -20,200,785 because 10^-2 is -100 and 10^7=10000000, so times and subtract like so and get the answer -20,200,785. Moreover in scienfic notation form it will be -20,200,785x10^7

Answer:

How do most motor proteins ensure their movements are unidirectional :

Explanation:

They couple a conformational change to the hydrolysis of an ATP molecule. Investigators are studying a protein that must be phosphorylated to be activated.

Answer:

Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.

Answer:

Cancer is unchecked cell growth. Mutations in genes can cause cancer by accelerating cell division rates or inhibiting normal controls on the system, such as cell cycle arrest or programmed cell death. As a mass of cancerous cells grows, it can develop into a tumor.

Explanation:

Superficially, the connection between the cell cycle and cancer is obvious: cell cycle machinery controls cell proliferation, and cancer is a disease of inappropriate cell proliferation. Fundamentally, all cancers permit the existence of too many cells.

Answer:

i think A is the correct answer

A more generalized and flexible feeder (red fox) has several food sources, and a more specialized feeder like the giant panda has a restricted diet.

To be classified as an omnivore, the animal needs to eat both animal foods and plant foods. Most omnivorous animals are “opportunists”, that is, they choose the foods they find most easily.

With this information, we can conclude that opportunistic omnivores tend to adapt more easily to new conditions imposed by the environment.

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The type of connective tissue that helps to tightly bind bones together, resist stress, attach muscle to bone, and transfer muscular tension to bones is called regular collagenous tissue

Answer:

Answer:

Prokaryotes are smaller and less developed compared to eukaryotes. Some of them inhabit very primitive environments that resemble earth’s early stages. Endosymbiotic theory states that eukaryotes arose by the endosymbiosis of prokaryotes.

Explanation

By endosymbiont theory, eukaryotic cells arise from prokaryotic cells. Here, the theory shows that eukaryotic ancestors lived in close association with prokaryotes, wherein in some cases, prokaryotes have been engulfed and might have lived inside eukaryotes.

Upon being engulfed by a host cell as undigested prey, these prokaryotes could have been internal parasites of the eukaryotes. But, later on, their relationship becomes mutualistic and these prokaryotes become incorporated as organelles, such as in the case of chloroplasts and mitochondria, which were previously separate prokaryotes

______________________________________

Prokaryotic cells probably appeared before eukaryotic cells​ because they are less complex.

Evolution means descendence with modification, which can be defined as a consequence of natural selection.

Evolution is therefore a process in which less complex organisms give rise to more complex species.

In conclusion, prokaryotic cells probably appeared before eukaryotic cells​ because they are less complex.

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Answer:

sunny

Explanation:

Answer:

c

Explanation:

Answer:

Yes they are.

Explanation:

Rod are the receptor cells contained in the retina and are useful in low light conditions.

The rod receptor cells contained in the retina and are useful in low-light conditions.

Rods are cylindrical shaped photoreceptors. They are more numerous than cone cells, with an estimated 92 million rod cells located in the human retina.

Rods are a type of photoreceptor cell in the retina. They are sensitive to light levels and help give us good vision in low light. They are concentrated in the outer areas of the retina and give us peripheral vision.

Rod cell death causes night blindness, but visual disability and blindness result from cone degeneration and therefore it is critical to determine the mechanisms by which it occurs. The death of rods reduces oxygen consumption resulting in high tissue levels of oxygen in the outer retina.

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Chemosynthetic organisms are considered autotrophs

Option A

It is a a special type of autotrophic nutrition whereby organisms use chemical energy to produce their own food by themselves.

In this case, chemosyntyethic or autotrophic bacteria produce their food using chemical energy

Autotrophs are organisms that produces their food by themselves either through photosynthesis or chemosynthesis

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Answer:

Although an individual gene may code for a specific physical trait, that gene can exist in different forms, or alleles. ... In other cases, each parent provides a different allele of a given gene, and the offspring is referred to as heterozygous ("hetero" meaning "different") for that allele.

Answer:

earthquakes, volcanoes and tsunamis all result because of plate tectonics

Answer:

The Fluid outside the cell is Hypertonic in Nature.

Explanation:

Since the concentration of salt outside the cell is more than it's inside, then it is a type of Hypertonic Solution.

Answer:

B. Cell walls contain cellulose!

Explanation:

this is only a quality of plants so this wouldn't be found in the animal kingdom.

Cell wall composition varies depending on the organism. In plants, the cell wall is composed mainly of strong fibers of the carbohydrate polymer cellulose. Cellulose is the major component of cotton fiber and wood, and it is used in paper production.

Answer:

B.

Cell walls contain cellulose

Explanation:

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