Why do animals need to take in oxygen? A) to break down fuel molecules

B) to keep less oxygen in the atmosphere

C) to build fuel molecules from carbon dioxide

D) to be able to use energy from the sun

Agene with the original sequence of atgtt—tact underwent substitution mutation to form atatt—tact after a few generations. tact is a part of a muscle protein encoding region, and atgtt codes for a digestive enzyme. what will be the effect of this mutation? a. the production of muscle protein will be affected. b. the production of digestive enzymes will be affected. c. the production of both the protein and the enzyme will be affected. d. the production of neither the protein nor the enzyme will be affected.

Surrounded by microtubules, located near the nucleus. (don't try to google it) (give answer only if u know)

What is a traditional chinese touch therapy involving finger pressure applied to specific areas of the body to restore the flow of qi.