Welcome to the Quiz!

This quiz contains 10 questions from a mix of 1 subtopics.

What is the primary function of mitochondria?

to synthesise proteins

to produce large quantities of ATP

to store genetic information

to transport molecules across the cell

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Where does the link reaction and the Krebs cycle occur in the mitochondrion?

outer membrane

inner membrane

intermembrane space

matrix

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What is the role of the intermembrane space in mitochondria?

contains mitochondrial DNA

site of the Krebs cycle

site of the link reaction

space for protons to be pumped into during oxidative phosphorylation

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What is the role of mitochondrial DNA?

to control the cell cycle

to store genetic information for the entire cell

to synthesise all the proteins in the cell

to code for some of the proteins required for the mitochondrion to function

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Which of the following is true about the inner membrane of mitochondria?

it contains mitochondrial DNA

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

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What is the role of mitochondrial ribosomes?

to control the cell cycle

to transport molecules across the mitochondrial membranes

to synthesise proteins within the mitochondria

to store genetic information

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What is the benefit of having a small intermembrane space in mitochondria?

it allows for faster transport of molecules across the mitochondrial membranes

it increases the surface area for proteins involved in oxidative phosphorylation

it allows the proton concentration gradient to build up quickly

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 separates the contents of the mitochondrion from the rest of the cell

it contains mitochondrial DNA

it is the site of the link reaction and the Krebs cycle

it contains the proteins involved in oxidative phosphorylation

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What is the relationship between the number of mitochondria and a cell's energy requirements?

the number of mitochondria is not related to a cell's energy requirements

cells with higher energy requirements have fewer mitochondria

cells with higher energy requirements have more mitochondria

all cells have the same number of mitochondria regardless of energy requirements

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What is the role of enzymes in the matrix of mitochondria?

to pump protons into the intermembrane space

to transport molecules across the mitochondrial membranes

to catalyse reactions in the link reaction and the Krebs cycle

to synthesise ATP

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