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AleksAgata [21]
2 years ago
9

What type of organic chemical are hormones?

Biology
1 answer:
Digiron [165]2 years ago
7 0
Amino acids hope i helped have a nice day
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3. What body movements are due to muscles working in opposed<br> groups? Explain
NikAS [45]

Answer:

Elbow

Explanation:

Muscle works in pairs and groups e.g biceps flexes the elbow and triceps extend it and it is called antagonistic muscle action.

The working muscle is called the primer mover or agonist. The relaxing muscle by another muscle is called synergists.

When muscles cause a limb to move through the joint range of motion,it could be synergists or antagonists.

I hope this will help you

6 0
2 years ago
3. What adaptation of land plants helps it to control gas exchange with the atmosphere?
Alecsey [184]
3) C. Stomata, as I explained in my previous answer.

4) B. Nonvascular, low-hanging plants living in moist environs don't have to fight gravity nearly as much as tall ones do. So they needn't highly developed vessels to transport to their tips

5) B. Gravity, see above. The higher trees/plants grew, the further their apical structures were from ground water sources, so the lignin-supported, strong vascular tissue (phloem) allows the transport of water against gravity, using a capillary method (benefiting from the adhesive effect of water molecules).
6 0
3 years ago
1. Define diffusion.
anygoal [31]

Answer:

1) Diffusion is net movement of anything (e.g., atom, ions, molecules) from a region of higher concentration to a region of lower concentration.

2) Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides

3) One big difference between osmosis and diffusion is that both solvent and solute particles are free to move in diffusion, but in osmosis, only the solvent molecules (water molecules) cross the membrane.

4)  Molecules tend to move from areas of higher concentration to areas of lower concentration.

I'm sorry, but I don't know how to do part #2. I think it's a lab.

4 0
2 years ago
What the significant of meiosis ​
Zanzabum

Answer: Responsible for formation of reproduction cells/gametes

Explanation: Meiosis is significant because it makes sure that all organisms (which were produced via reproduction) contains the correct number of chromosomes. Also, Meiosis produces genetic variation by the process of recombination.

3 0
2 years ago
African elephants flat their large ears to cool off. Which biology theme does this phenomenon represents?
cricket20 [7]
C interdependence in nature
3 0
3 years ago
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