B2.2 Organelles and compartmentalization Quiz
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5 questions, one answer each
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1. Which is an organelle?
- A. Cell wall
- B. Cytoplasm
- C. Ribosome
- D. Cytoskeleton
2. Cell fractionation became possible after the invention of:
- A. The light microscope
- B. The ultracentrifuge
- C. PCR
- D. Gel electrophoresis
3. In eukaryotes, which process can be completed before mRNA meets a ribosome?
- A. Translation
- B. Post-transcriptional modification
- C. Peptide bond formation
- D. DNA replication
4. Why do lysosomal enzymes not digest the cell's own cytoplasm?
- A. They are enclosed in membranes and work poorly at cytoplasmic pH
- B. The cytoplasm has no proteins
- C. They are only made after phagocytosis
- D. They are destroyed by ribosomes
5. In differential centrifugation, which fraction needs the highest speed?
- A. Nuclei
- B. Mitochondria
- C. Ribosomes
- D. Whole cells