Understanding Lysosomes and Peroxisomes

Practice Questions

GRE Subject Test: Biology › Understanding Lysosomes and Peroxisomes

Questions
4
1

Lysosomes are organelles that contain acid hydrolase enzymes, such that materials that are taken up by lysosomes can be degraded into their basic components, and these components can be reused by the cell. Due to the presence of these enzymes, interior of the lysosome is very acidic, with a pH around 4.7 or 4.8. The cell cytoplasm has pH typically around 7.2, making it slightly basic. What type of membrane component is likely responsible for maintaining the acidic environment within the lysosome?

2

Which organelle is used for the degradation of macromolecules in the cell?

3

If a cell is incapable of catabolizing very long fatty acid chains, it most likely has a problem with which of the following organelles?

4

Which of the following is not true of lysosomes?

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