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Elina [12.6K]
4 years ago
13

Respiration involves the breakdown of sugar . The process results in the production of energy for the cell. In order for cells t

o produce the most every , what gas should be present
Biology
1 answer:
mixer [17]4 years ago
3 0

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The iris in the human eye contracts and expands, controlling the amount of light that reaches the retina. What types of muscle c
masya89 [10]

The iris is a pigmented muscular curtain found near the front of the eye and between the cornea and lens. It is perforated by an opening known as the pupil. The location of the iris is found in front of the eye lens and the ciliary body and posterior to the cornea. It is bathed in a fluid called as the aqueous humor.


The iris consists of two sheets of smooth muscles with opposing actions: dilation/expansion and contraction/constriction. The primary function of these muscles is tho control the size of the pupil and modulates how much light reaches the sensory tissue of the retina. The sphincter muscle of the iris is a rounded muscle that constricts the pupil whenever there is a bright light, whereas the dilator muscle expands the eye opening when it contracts.

Therefore, the answer is D. SMOOTH AND INVOLUNTARY because first of all the types of muscles that comprises the muscles in the iris are smooth and it is involuntary because they eyes auto-regulates the light that comes to it without our conscious effort.

3 0
4 years ago
Read 2 more answers
_____ recognized the vital role of the internal environment and suggested that the objective of mechanisms within the body is to
Sidana [21]
Robert hook is the one recognized vital role of the in internal environment and observers
5 0
3 years ago
A group of scientists examined a meteorite from Mars and found a carbon-rich substance that is produced when microorganisms deca
FrozenT [24]

So,

There is a scientific consensus that life exists on other planets

and

The scientists only studied one meteorite

The first one because the other ones don't make sense, and because it is a scientific consensus. The latter because they only studied one, and imagine if they studied other ones...

6 0
4 years ago
Read 2 more answers
Does health insurance system in the US affect the work of health scientists? Why or why not?
notka56 [123]

Answer:

pretty sure that health scientists, assuming they understand pharmaceutical actions and reactions, get paid either way & possibly get cheaper h insurance for their expertise.

Explanation:

No, does not affect their work because they get paid to test new drugs on lab rats, chimps, dogs, etc. to see if there is an effect on subjects they give a medical condition to. As unfair as it seems, once lab subjects are tested for years, and they witness if they're theories are justified or not; then they determine a trial run on human test subjects. this process can take up 2 10 years or longer.

8 0
3 years ago
Only individuals belonging to the same species are able to
True [87]

There are some possible answers which all mean the same thing:

- Produce fertile offspring

- Produce offspring

- Reproduce


→ Only individuals of a same species (sometimes genus) can reproduce because in order to reproduce animals need to have a similar genetic code, and there is now code more similar than the one of individuals of their own species.



Hope it helped,


BioTeacher101

6 0
3 years ago
Read 2 more answers
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