Answer:
Electron Transport Chain
It is the only part of cellular respiration that directly consumes oxygen; however, in some prokaryotes, this is an anaerobic pathway. In eukaryotes, this pathway takes place in the inner mitochondrial membrane. In prokaryotes it occurs in the plasma membrane.
I maybe c I hope u pass :D
Answer:B I think it is idk if I’m wrong report my comment
Answer: Standardization
Explanation:
Standardization is defined as process in which something is kept and followed as per basic standards of that field.It maintains consistency level in the field for all the factors.
According to the question, standardization is the drawback factor in Dr. Dodd's research because the measure of physical activity was based on standards of college student's field .
This standard is used by Dr. Dodd for measuring senior citizen's physical activity. Thus, the result obtained will be inaccurate because of incorrect standardization used.