Answer:
B. diaphragm
Explanation:
this structure flutters and causes the chest cavity to largen
I think it is B. histones
Chromatin contains proteins called hemoproteins.
I hope this helps HilalSchair6e
I believe the thyroid controls most, if not all of those things. (Again, I'm not entirely sure.)
Answer: D. Plants do not eat, so both chloroplasts and mitochondria are needed to make enough energy for plants to grow.
Explanation: Option A is invalid since plant cells do use ATP. Option B is invalid since animal cells don't make their energy with chloroplasts. Option D is the most realistic one since chloroplasts in the plant are the ones that make the food for the plants, plant doesn't have a "mouth" so they depend on chloroplast to make food.
