Which statement describes how chemical formulas, such as H2O, represent compounds? They show the types of molecules that make up an atom. They show the elements that make up a compound. They show the three-dimensional shape of a molecule. They show the types of bonds that exist between elements.
Answer:
They show the elements that make up a compound
Explanation:
Compound consist of molecules that are identical, this molecules are made up of atoms of two or more elements.
An element is identified based on the atomic property of the element.
Water as a compound is composed of 2 Hydrogen atom to 1 oxygen atom and the molecule is H2O.
Water is composed of molecules hence, they are called molecular compound.
Chemical equation of water is showing elements that it is made up of is
H+ + OH- --- H2O .
Answer:
B
Explanation: eng
Which best difines homeostasis?
The answer is B because homeostasis is defined as State of steady internal physical and chemical conditions maintain by living systems.
What is a function of the thyroid gland?
O A. Controls growth during childhood
B. Regulates pituitary gland
O C. Regulates calcium in blood
O D. Releases insulin
Please help me
Answer:
Regulates calcium in blood
Explanation:
Answer:
B
Explanation:
Which feature is created by deposition from rivers?
How could this mRNA sequence support a triplet code? ACACACACACAC
Answer: When the triplet code ACACACACACAC is translated in such conditions, it will produce a polypeptide chain consisting of multiple copies of only one type of amino acid.
Explanation: I hope this helps you!
Which of these is an example of an adaptive (or specific) immune response? A. A person's immune system responds to dirt entering the eye by increasing tear flow and flushing the dirt out of the eye. B. A person's immune system recognizes that a bacterial infection is present and signals the hypothalamus to increase body temperature. C. A person's immune system responds to
Answer:
b
Explanation:
What are the forces that drive natural selection?
What must a food handler do with ice that had been previously used to display fresh fish?
Answer:
The food handler should dispose the ice away or
Explanation:
Ice that has been use previous used to display fresh fish should be disposed by food handler, this is because this ice might have been contaminated and can habor inanimate pathogens I .e pathogens that are not readily active and can become active when the environment is conducive. These pathogens can cause contaminations, spoilage and have effects on the consumer.
In order to avoid these, I e use to preserve fresh fish previously should be disposed.
The pedigree below tracks the presence of attached earlobes through a family's generations. Having attached earlobes is an autosomal recessive trait?
Answer:
Attached earlobes is an autosomal recessive trait.
Explanation:
Autosomal inheritance is the term used to describe characteristics passed on by genes that are not located on the X and Y chromosomes (the chromosomes responsible for determining the gender of individuals). The orela lobe genes are an example of genes that are involved in this type of inheritance.
This type of inheritance is called "autosomal recessive inheritance" when the individual received a recessive gene from his father and a recessive gene from his mother to form a characteristic. An example of this can be seen in individuals who have their earlobe attached.
Therefore, we can affirm that the attached ear lobe is a characteristic formed by recessive aautossomic inheritance.
please help no copying i need this in less than 30 minutes please helppppppppppppp
Which substances are released during cellular respiration? Use complete sentences to explain how the mass of oxygen is conserved during cellular respiration.
Do my diffusion Assignment for 30 pts
Answer:
ok
Explanation:
but wheres is it
Henry touched a hot plate and immediately moved his finger away from it.
Which best explains the integumentary system’s role in this reaction?
Answer:this is a reflex action
Explanation:it is an instantaneous response and is involuntary
Which major level of classification contains the most closely related species?
For each of the following, read the characteristics and then identify the kingdom. is mostly unicellular, eukaryotic, and is comprised of eukaryotes that do not fit into other eukaryotic kingdoms. is unicellular, prokaryotic, and has a cell wall that contain peptidoglycan. is unicellular, prokaryotic, has a cell wall, and often lives in extreme environments.
Answer:
1. Kingdom Protista
2. Kingdom Eubacteria
3. Kingdom Archaeabacteria
Explanation:
1. Kingdom Protista is one of the the six kingdoms. It consists of organisms called PROTISTS that are eukaryotic i.e. possess a membrane-bound nucleus and mostly single-celled (unicellular). Protists are eukaryotic organisms like plants, animals and fungi but their characteristics do not fit into any of these three eukaryptic groups. Protists include; algae, amoeba, etc.
2. Kingdom Eubacteria, as their name implies, are known as true bacteria. The constituent organisms of this kingdom are prokaryotic i.e. lack a membrane-bound nucleus and single-celled (unicellular). They possess a cell wall, in addition to their cell membrane, that is made up of PEPTIDOGLYCAN. Examples of organisms in this kingdom are Streptococcus, Bacillus etc.
3. Kingdom Archaebacteria were once grouped together with the true bacteria as kingdom Monera but were split because of their obvious differing characteristics. Archeans are single-celled prokaryotic organisms characterized majorly by their ability to live and thrive in extreme environmental conditions e.g hot conditions, anoxia conditions (no oxygen).
Answer:
1. Protista
2.Eubacteria
3.Archaeabacteria
Explanation:
got it right on edge
Need help please thanks
Answer:
C
Explanation:
Endophytes are bacterium or fungi that prevent the plant from herbivory from grazing animals by producing myotoxins that send grazing animals away
In all organisms, DNA contains what kind of Information?
Answer:
Explanation:
DNA Is a Structure That Encodes Biological Information.
hope it helps....
Many bird species have seasonal behaviors that cause them to _______ or change their location.
Answer:
Migrate
Explanation:
Migration is the seasonal behavior of bird species where they relocate to breed, get food, or go to a more suitable climate
Match the characteristics of the biome to the type of rainforest
___ weather year around is warm and humid
____ received about 200 inches of rain a year
___ trees are mostly coniferous
___ greatest variety of
uniquely adapted organism
Answer
-tropical
-temperate
-temperate
-tropical
Tropical biome year around is warm and humid. Temperate biome received about 200 inches of rain a year, temperate biome are mostly coniferous, and tropical biome have greatest variety of uniquely adapted organism.
What are the topical and temperate biomes?The tropical rainforest biome mainly shows four main characteristics which include very high annual rainfall, high average temperatures, nutrient-poor soil, and the high levels of biodiversity that is species richness.
The temperate forest biome is one of the world's major habitats or biomes. Temperate forests are generally characterized as regions with the high levels of precipitation, humidity, and a variety of deciduous trees. In this biome, decreasing temperatures and shortened daylight hours in the fall mean decreased photosynthesis for the plants.
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The conditions needed for primary
succession
A. Are very rare.
B. depend on forest fires.
C. must happen before secondary succession.
Answer:
must happen before secondary succession
Which factor do trees need when they compete for energy
soil
sunlight
space
ability to reproduce
Answer:
Sunlight
Explanation:
Sunlight is the form of energy that trees use to complete the process of photosynthesis. In order for a tree to convert carbon dioxide and water into sugars (and other carbohydrates), it needs energy from the sun. The crown of a tree collects sunlight.
Answer:B-Sunlight
Explanation:
What are the categories for the Linnaean system? Which is the most specific? Which is the most broad?
Answer:
For first question the answer will be :
In the taxonomy of Linnaeus there are three kingdoms, divided into classes, and they, in turn, into orders, genera (singular: genus), and species (singular: species), with an additional rank lower than species. a term for rank-based classification of organisms, in general.
And for the second:
The species is the smallest and most exclusive grouping. It consists of organisms that are similar enough to produce fertile offspring together. Closely related species are grouped together in a genus. Linnaean Classification System: Classification of the Human Species.
While for third:
The broadest category in the Linnaean system is the kingdom.Animal Kingdom because Homo sapiens belongs to that kingdom. Other kingdoms include the Plant Kingdom, Fungus Kingdom, and Protist Kingdom.
Hope it helpsA major freeway runs along a stretch of the ocean shore. Over time, scientists begin to
notice a decrease in the number of intertidal organisms. Which of the following is the most
likely cause of the problem?
O A. toxic waste spilled during accidents on the
road
B. runoff of oil and other chemicals from the
road
C. wastewater from the city across the
freeway
O D. Any or all of the above could be causing
the problem.
Answer:
D. Any or all of the above could be causing the problem.
Explanation:
Pollution has been said to have adverse effect on living organisms. In this question, a decrease in number of intertidal organisms has been observed. Since a major freeway runs along a stretch of the ocean shore, the most likely cause of the death of the intertidal organisms is the release of any form of toxic waste into the water body.
Oil pollutants causes death of living organisms by hindering the entrance of oxygen into the water body. It makes it difficult for oxygen, which is a requirement for life, to penetrate the water body. Hence, living organisms in the water body will suffocate and die.
Toxic wastes also causes the death of organisms when ingested in excess. Waste water causes deterioration in the oxygen content of the water body. Hence, any or all of the above options can likely cause the reduction in number of the intertidal organisms.
Which change would most likely cause a decrease in the number of squirrels living in and area
Answer:
Migration of squirrels.
Explanation:
Migration of squirrels can cause decrease in population in an area.
Squirrels migrate or move for one place to another which can be as a result of drought, food shortage or overpopulation.
Squirrels tend to migrate from an area to another in search of food for living. They also move when there is drought to get water and when their population in an area much, the migrate to get another space.
Answer:
an increase in the number of forest fi res
Explanation:
I did this before
what are two factors about particles that enable them to form solutions
Answer:
temperature and whether they are polar or non-polar
Explanation:
What happens to electrons when pigments in Photosystem II absorb light? They become excited and break down the pigments to release ATP. They are pumped across the membrane into the thylakoid. They move through an electron transport chain to Photosystem I. They combine with oxygen and hydrogen to produce water.
Answer:
They move through an electron transport chain to Photosystem I.
Explanation:
High-energy electrons move through the electron transport chain from photosystem II to photosystem I. Energy from the electrons is used by the molecules in the electron transport chain to transport H+ ions from the stroma into the inner thylakoid.
Answer: They move through an elctron...
When light is absorbed by one of the many pigments in photosystem II, energy is passed inward from pigment to pigment until it reaches the reaction center. The high-energy electron is passed to an acceptor molecule and replaced with an electron from water.
Explanation:
Lymph ______ are found throughout the body and are a signal of a disease, infection, or problem if they become and remain swollen for long periods of time. ______ are pathogens that cannot be killed with antibiotics because they are non-living. They take over cellular organelles to replicate and spread. Because they are also eukaryotes with their own cell membranes and membrane-bound organelles, ______ are often difficult to combat with medicines. A cell signal called ______ is produced by mast cells. These molecules cause more fluid to spread to an infected area. _______ are the types of cells that produce antibodies. All pathogens have unique identifying molecules on their surfaces called ______. Antibodies bind to these, and targeting the pathogen to be destroyed by the immune system. ______ is a non-specific response to disease, in which the body temperature rises. Respond to the following based on your reading. Describe the steps that occur, in order, to trigger an inflammatory response to a paper cut.
Answer:
Lymph nodes are found throughout the body and are a signal of a disease, infection, or problem if they become and remain swollen for long periods of time. Bacteria are pathogens that cannot be killed with antibiotics because they are non-living. They take over cellular organelles to replicate and spread. Because they are also eukaryotes with their own cell membranes and membrane-bound organelles, viruses are often difficult to combat with medicines. A cell signal called the FcϵRI receptor is produced by mast cells. These molecules cause more fluid to spread to an infected area. Lymphocytes are the types of cells that produce antibodies. All pathogens have unique identifying molecules on their surfaces called antigens. Antibodies bind to these and targeting the pathogen to be destroyed by the immune system. Fever is a non-specific response to disease, in which the body temperature rises. Respond to the following based on your reading. Describe the steps that occur, in order, to trigger an inflammatory response to a paper cut.
Answer:nodes
Viruses
fungi
histamine
B-cells
antigens
Fever
When a paper cut breaks the skin, it introduces outside microorganisms into the cut. The body recognizes the break in the skin. Mast cells produce histamines, which cause more blood and lymph fluid to flow to the wound. This increased flow brings phagocytic white blood cells to the area, which destroy invading organisms until the blood can clot and the skin can heal over the cut, preventing more organisms from entering the body. If a cut is too deep or too wide, special care such as stitches and antibiotics could be needed to prevent infection.
Explanation:
use the particle theory to explain why hot chocolate powder dissolves more rapidly in hot water than cold water
Answer:
Since hot water has more kinetic energy, any particles that are suspended in it move at a faster rate than in cold water.
Explanation:
Which substance is a compound?
water
O gold
oxygen
O hydrogen
Answer:
Water
Explanation:
This is actually a chemistry question but I'll answer it anyways
The definition of a chemical compound is " a chemical substance composed of many identical molecules composed of atoms from more than one element held together by chemical bonds. "
Compounds are homogenous, which means that they are evenly distributed and have 2 or more different elements from the definition
Therefore the answer is that water is a compound as its chemical make up is H2O.
Gold is made up of 1 element
Oxygen is made up of 1 element,
Hydrogen is made up of 1 element
Therefore these options are not viable since they do not contain 2 or more elements.
Water is a compound.
A compound is a substance that results from a combination of two or more different chemical element.Here these two elements are Hydrogen and oxygen.What are examples of common household compound?Water. Table Salt. Sucrose (Sugar) Soaps.Toothpaste.Baking Powder. Mouthwash. Nail paint Remover.Hence, A option is correct.
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which of the following is not a required process for the survival of animals?
Answer:
C. Movement
Explanation:
Movement is not a required process for the survival of animals.
This means that animals can survive without moving.
For example, during hibernation, a snake survives resting in a particular place without movement.
If a person's movement is confined to zero, the person can still survive, but if absorption of nutrients and oxygen stops, then the person shall die.
WILL MARK BRAINLIEST
Scientists have been studying threats to coral reefs. The percent of reefs affected by various threats are shown in the figure below. A future global temperature increase may affect all categories on the figure. Predict which category would change the most from global temperature increases and propose a testable question that scientists could study.
a. The biggest effect will be on the far right column that includes thermal stress with a greater percentage of reefs falling into the low and medium threat categories. Scientists could test whether reefs that have greater fishing risk also have greater thermal risk.
b. The biggest effect will be on the far right column that includes thermal stress, with a greater percentage of reefs falling into the high and very high threat categories. Scientists could test whether reefs that have greater temperature changes have greater increases in watershed-based pollution.
c. The biggest effect will be on the far left column that includes fishing, with a greater percentage of reefs falling into the high and very high threat categories. Scientists could test whether increased fishing causes increased marine-based pollution.
d. The biggest effect will be on the far left column that includes fishing, with a greater percentage of reefs falling into the low and medium threat categories. Scientists could test whether reefs that have greater temperature changes have greater increases in fishing threats.
Answer:
It's B
Explanation:
Temperature rise will eventually end up putting coral reefs into the high threat categories, not fishing and DEFFINITELY not lowering their "risk" factor.
Coral reefs are the organisms of the aquatic ecosystem. The column includes the thermal stress that will be affected the most as the reefs fall into high and very high threats are huge. Thus, option B is correct.
What is the effect of thermal stress on coral reefs?Due to an increase in pollution and global warming, the oceans have heated up, which results in thermal stress and leads to coral bleaching and threat to the coral reefs.
The percentage of the very highly threatened, highly threatened, slightly threatened, and threatened reefs are seen majorly due to the thermal stress. Thermal stress is in increases amount due to oceanic warm-ups.
The thermal stress due to increased carbon dioxide activities and acidity leads to coral bleaching causes the destruction of the reefs and their endangerment.
Therefore, option B. the far right column labeled thermal stress has the biggest effect on the coral reefs.
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