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Questions and Answers
Which of the following is true about the outer mitochondrial membrane?
Which of the following is true about the outer mitochondrial membrane?
- It does not contain any enzymes
- It allows molecules of any size to freely diffuse
- It is thicker than the eukaryotic plasma membrane
- It contains integral membrane proteins called porins (correct)
What is the main function of the porins in the outer mitochondrial membrane?
What is the main function of the porins in the outer mitochondrial membrane?
- To degrade tryptophan
- To allow molecules of any size to freely diffuse (correct)
- To actively move large proteins across the membrane
- To elongate fatty acids
How do larger proteins enter the mitochondrion?
How do larger proteins enter the mitochondrion?
- They freely diffuse through the outer mitochondrial membrane
- They bind to translocase of the outer membrane
- They actively move across the membrane through porins
- They are transported by specialized translocate complexes (correct)
What is the protein-to-phospholipid ratio of the outer mitochondrial membrane?
What is the protein-to-phospholipid ratio of the outer mitochondrial membrane?
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Which of the following is NOT an activity of the enzymes in the outer mitochondrial membrane?
Which of the following is NOT an activity of the enzymes in the outer mitochondrial membrane?
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Which G protein subunit stimulates adenylyl cyclase?
Which G protein subunit stimulates adenylyl cyclase?
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How many different β subunits do mammalian genomes encode?
How many different β subunits do mammalian genomes encode?
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What is the function of γ subunits in G proteins?
What is the function of γ subunits in G proteins?
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Which G protein is associated with the epinephrine receptor?
Which G protein is associated with the epinephrine receptor?
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How do different G proteins couple receptors to distinct intracellular targets?
How do different G proteins couple receptors to distinct intracellular targets?
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