Welcome to the Quiz!
This quiz contains 10 questions from a mix of 1 subtopics.
What is the primary function of mitochondria?
to store genetic information
to synthesise proteins
to transport molecules across the cell
to produce large quantities of ATP
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Where does the link reaction and the Krebs cycle occur in the mitochondrion?
inner membrane
matrix
outer membrane
intermembrane space
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What is the role of the intermembrane space in mitochondria?
site of the Krebs cycle
contains mitochondrial DNA
space for protons to be pumped into during oxidative phosphorylation
site of the link reaction
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What is the role of mitochondrial DNA?
to synthesise all the proteins in the cell
to code for some of the proteins required for the mitochondrion to function
to store genetic information for the entire cell
to control the cell cycle
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Which of the following is true about the inner membrane of mitochondria?
it separates the contents of the mitochondrion from the rest of the cell
it contains the proteins involved in oxidative phosphorylation
it is the site of the link reaction and the Krebs cycle
it contains mitochondrial DNA
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What is the role of mitochondrial ribosomes?
to transport molecules across the mitochondrial membranes
to synthesise proteins within the mitochondria
to store genetic information
to control the cell cycle
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What is the benefit of having a small intermembrane space in mitochondria?
it increases the surface area for proteins involved in oxidative phosphorylation
it allows the proton concentration gradient to build up quickly
it allows for faster transport of molecules across the mitochondrial membranes
it provides more space for the link reaction and the Krebs cycle
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Which of the following is true about the outer membrane of mitochondria?
it is the site of the link reaction and the Krebs cycle
it separates the contents of the mitochondrion from the rest of the cell
it contains the proteins involved in oxidative phosphorylation
it contains mitochondrial DNA
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What is the relationship between the number of mitochondria and a cell's energy requirements?
all cells have the same number of mitochondria regardless of energy requirements
cells with higher energy requirements have fewer mitochondria
the number of mitochondria is not related to a cell's energy requirements
cells with higher energy requirements have more mitochondria
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What is the role of enzymes in the matrix of mitochondria?
to catalyse reactions in the link reaction and the Krebs cycle
to pump protons into the intermembrane space
to transport molecules across the mitochondrial membranes
to synthesise ATP
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