Question:
Acetyl Co-A reacts with __________ to begin Krebs cycle.
Acetyl Co-A reacts with __________ to begin Krebs cycle.
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Acetyl CoA joins a four carbon acid to give citric acid.
Updated On: Nov 13, 2026
- Succinate
- Fumarate
- Oxaloacetate
- Malate
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Verified By Collegedunia
The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
The Krebs (citric acid) cycle begins when acetyl CoA (2 carbons) condenses with a 4 carbon acid.
Step 2: Reaction
Acetyl CoA + oxaloacetic acid (OAA) \(\rightarrow\) citric acid + CoA, catalysed by citrate synthase.
Step 3: Match
The compound is oxaloacetate, option (C).
Final Answer:
Acetyl CoA reacts with oxaloacetate to start the Krebs cycle. \[ \boxed{\text{(C) }\text{Oxaloacetate}} \]
The Krebs (citric acid) cycle begins when acetyl CoA (2 carbons) condenses with a 4 carbon acid.
Step 2: Reaction
Acetyl CoA + oxaloacetic acid (OAA) \(\rightarrow\) citric acid + CoA, catalysed by citrate synthase.
Step 3: Match
The compound is oxaloacetate, option (C).
Final Answer:
Acetyl CoA reacts with oxaloacetate to start the Krebs cycle. \[ \boxed{\text{(C) }\text{Oxaloacetate}} \]
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