NEET BIOLOGY

HUMAN PHYSIOLOGY

DIGESTION AND ABSORPTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Villi epithelial cells contain large numbers of mitochondria to produce lots of ATP by aerobic respiration.What is ATP mainly used for by these cells?
A
simple diffusion
B
facilitated diffusion
C
osmosis
D
active transport
Explanation: 

Detailed explanation-1: -Most of the adenosine triphosphate (ATP) synthesized during glucose metabolism is produced in the mitochondria through oxidative phosphorylation. This is a complex reaction powered by the proton gradient across the mitochondrial inner membrane, which is generated by mitochondrial respiration.

Detailed explanation-2: -Mitochondria have an important role in cellular respiration through the production of ATP, using chemical energy found in glucose and other nutrients.

Detailed explanation-3: -Epithelial cells have many mitochondria because these cells have high levels of energy output and require the ATP (adenosine triphosphate) produced by the mitochondria.

Detailed explanation-4: -Mitochondria Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell’s biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate (ATP).

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