Yes, all polypeptides have tertiary structures. All proteins have primary, secondary and tertiary structures. However, quaternary structures only arise when a protein is made up of two or more polypeptide chains. Hope this answers the question. Have a nice day.
Answer: Crossing over is a biological occurrence that happens during meiosis when the paired homologs, or chromosomes of the same type, are lined up.
Explanation:
Answer:
Plant to animal to atmosphere.
Explanation:
- The carbon cycle describes the recycling of carbon from and back to the atmosphere.
- Plants utilize the carbondioxide present in the atmosphere to produce carbohydrates in the presence of light through the process of photosynthesis.
- When plants are consumed by animals, the carbon becomes a part of the animal.
- Animals break down glucose molecules into energy (ATP), releasing water and carbondioxide in a process called cellular respiration.
- This carbondioxide, as it is useless for animal cells, is released back into the atmosphere through gaseous exchange in the lungs.
