The region labelled X is called the
A - VCE - SSCE Biology - Question 9 - 2017 - Paper 1
Question 9
The region labelled X is called the
A. matrix.
B. crista.
C. inner membrane.
D. intermembrane space.
Worked Solution & Example Answer:The region labelled X is called the
A - VCE - SSCE Biology - Question 9 - 2017 - Paper 1
Step 1
A. matrix.
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Answer
The matrix is the innermost compartment of the mitochondrion, where the citric acid cycle occurs. It contains enzymes, mitochondrial DNA, and ribosomes.
Step 2
B. crista.
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Answer
Cristae are the folds of the inner mitochondrial membrane. They increase the surface area for the electron transport chain and ATP synthesis.
Step 3
C. inner membrane.
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Answer
The inner membrane separates the mitochondrial matrix from the intermembrane space and is the site of the electron transport chain.
Step 4
D. intermembrane space.
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Answer
The intermembrane space is the area between the inner and outer membranes of the mitochondrion. It plays a crucial role in the process of oxidative phosphorylation.
