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