Question

what determines the proportion of slow and fast twitch muscle fibers in a person?
diet
genetics
age
6 multiple choice 1 point
what process do slow twitch muscles use to create atp?
anaerobic cell respiration
lactic acid fermentation
photosynthesis
aerobic cell respiration

Explanation:

• First question: Muscle fiber type proportion is mainly determined by genetics. Diet and age have less direct and fundamental influence on the basic proportion compared to genetic factors.
• Second question: Slow - twitch muscles rely on aerobic cell respiration to create ATP. Anaerobic cell respiration (including lactic acid fermentation) is more associated with fast - twitch muscle function during intense, short - term activities. Photosynthesis is a process in plants, not in muscle cells.

Answer:

• First question: B. genetics
• Second question: D. aerobic cell respiration