Question

31) Which of the following is NOT a main part of ATP synthase in mitochondria? A) a protruding knob 19a bilayer component that extends into the Krebs cycle a rod or stalk that connects the other parts D) a cylindrical component within the membrane E) All of the above u nd attached mod to rotate like rushing steam turns a

Answer 1

ATP synthase is an enzyme that creates energy storing molecule ATP ( adenosine triphosphate).

The enzyme consists of 3 parts

1. rotor : a rotor in the membrane spins clockwise when H+ ( proton ) flows through it down the H+ gradient.

2. Rod : a rod connecting the cylindrical rotor & knob spins, activating catalytic sites in the knob.

3. Knob : a protruding knob contains catalytic sites that join inorganic phosphate (Pi) to ADP to to make ATP.

hence

Gif H inna H innen membrane of mitochondria T pod matrix

Option A is correct ..

Option B is correct .. a bilayer component is rotor.

Option C is correct ... a rod or stalk that connects the other parts.

Option D is incorrect .. because cylinderical component is Rod or stalk , which is not present within the membrane.

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