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Viktor [21]
3 years ago
7

Which of the following elements is most important for respiration? carbon oxygen hydrogen nitrogen

Biology
2 answers:
kumpel [21]3 years ago
5 0
Nearly 99% of the mass of your human body consists of just 6 chemical elements: oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus. Another 5 elements make up most of the last percentage point: potassium, sulfur, sodium, chlorine, and magnesium
Otrada [13]3 years ago
4 0

Explanation:

Oxygen of course, because carbon is just the product of respiration, and we don't acutally breathe hydrogen or nitrogen - we might inhale them, of course, but we don't use them. They're just expelled.

Oxygen is used in many processes in our bodies both in big ones such as respiration or molecular ones like many cellular processes.

Answer:

B. / 2 - Oxygen.

Hope it helped,

BioTeacher101

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jasenka [17]

Answer:

7) the environment is hypotonic because it is less concentrated than the inside of the cell

8.)the mass would decrease because the stuff inside the cell (which is more concentrated in comparison) would diffuse across the cell membrane into the environment in order to maintain equilibrium

9.) Diffusion in order to maintain equilibrium (moving things across a barrier from a more concentrated area to a less concentrated area in order to have an equal concentration on each side) does not require energy. However, moving matter out of the cell in Diagram C would require energy because it involves moving mass from a less concentrated area to a more concentrated area.

Explanation:

5 0
2 years ago
The maximum force of static friction between the crate and the floor is 245
NeTakaya

Answer:

A: 250 N to the right

Explanation

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8 0
2 years ago
Describe the way human impact has leads to increased levels of CO2 in the atmosphere .
Maru [420]
Deforestation
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Burning fossil fuels
Power plants usagr
8 0
3 years ago
bedbugs are parasites? Explain your reasoning using what you’ve learned about parasitic relationships.
velikii [3]

Explanation:

Bedbugs are parasites that rely on blood to survive. They can feed on the blood of any mammal, although they appear to prefer the blood of humans. They are attracted to the warmth surrounding mammalian bodies and the carbon dioxide present in breath expiration. It is usually these factors that guide bedbugs to locate a suitable host for feeding. DOES THIS HELP?

5 0
3 years ago
Read 2 more answers
What is the function of mitochondria in cells?
castortr0y [4]
It’s B the other person put D but that’s the cell wall or cell membrane

HOPE THIS HELPS !
3 0
2 years ago
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