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vampirchik [111]
3 years ago
12

________ are a type of prevalence study that make a one-time assessment (similar to a snapshot) of disease in a study group

Biology
1 answer:
Alexeev081 [22]3 years ago
5 0
cross-sectional studies are a type of prevalence study that make a one-time assessment (similar to a snapshot) of disease in a study group.

God bless!
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Which of the following human activities most likely resulted in the growth of the North American deer population?
nikklg [1K]
C. Hunting wolves.  The rest either hurt the North American deer population or did not affect it at all.
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Compare the movement of oxygen and carbon dioxide across the cell membrane. (4 marks)
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Answer:

Molecules naturally disperse from areas of higher concentration to lower concentration.

As oxygen-rich (and carbon dioxide-poor) blood travels by a cell the oxygen diffuses through the cell membrane to the area of lower concentration inside the cell. It can do this easily because the oxygen molecule (O2) is very small and has no charge or polarity. The oxygen is used up rapidly by mitochondria. This rapid consumption causes oxygen to constantly move into the cell from the blood.

The mitochondria creates carbon dioxide (CO2) as a waste product of cellular respiration (the process that makes energy for your body). Because the CO2 is of a higher concentration in the cell than in the blood passing by, this gas continually diffuses out of the cell. It too is small and uncharged so it can pass through cell membranes easily.

These movements require no energy (in the form of ATP) on behalf of the cell.

Explanation:

3 0
3 years ago
Subduction zones are found under which kind of plate?
padilas [110]
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3 years ago
House cats and domestic dogs live in the same environment, often in close relationship with one another. However, they cannot in
aleksley [76]

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              B) They are not in the same species.

Explanation:

                     Cat and dog both are domestic animals but the can not interbreed to produce fertile offspring. Specie is define as those animal which can interbreed to produce fertile offspring so the cat and dog can not interbreed as they belong to two different species. Both species have different <u>chromosome number</u> that's why the can not interbreed. In order to interbreed both the organisms must belong to one specie. E.g As both tiger and lion live in one environment and the interbreed and produce tiglion but it is infertile and can not breed to produce offspring.

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3 years ago
The interface between the neural and endocrine systems is the _________________.
HACTEHA [7]

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6 0
3 years ago
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