Question

Fill in the blanks:
1. $ATP$ synthase consists of two major components, $F_0$ and $F_1$ The a______ headpiece is peripheral membrane protein complex and contains the site for synthesis of $ATP$ from $ADP$ and inorganic phosphate
2. b______ is an integral membrane protein complex that forms the channel through which proton crosses the membrane
3. For each $ATP$ produced, c______ passes through b______ from the d______ to the e______ down the electrochemical proton gradient.

• A. $a—F_0,b—F_1,c—3H^{+},$ d— matrix, e—inner membrane
• B. $a—F_1,b—F_0,c—2H^{+},d$—intermembrane space, e —matrix
• C. $a—F_0,b—F_1,c—2H^{+},$ d—intermembrane space, e —matrix
• D. $a—F_1,b—F_0,c—2H^{+}$,d—matrix, e—intermembrane space

Answer 1

Answer: (B)

1. $ATP$ synthase consists of two major components, $F_0$ and $F_1$ The $F_1$ headpiece is peripheral membrane pro tein complex and contains the site for synthesis of $ATP$ from $ADP$ and inorganic phosphate
2. $F_0$ is an integral membrane protein complex that forms the channel through which proton crosses the membrane
3. For each $ATP$ produced, $2H^{+}$ passes through $F_0$ from the intermembrane space to the matrix down the electrochemical proton gradient