Cell Structure and Organelles MCQs Quiz 5

Cell Structure and Organelles MCQs Quiz 5
Cell Biology Multiple Choice Questions

1. Autophagy is primarily activated under which cellular condition?

 Nutrient abundance

 Nutrient starvation or cellular stress

 DNA replication phase

 High ATP levels

2. Which feature is universally shared by cells of all known living organisms?

 Genetic code

 Chloroplast

 Mitochondria

 Nucleus

3. The basic structural unit of chromatin is _______

 Gene

 Centromere

 Chromatid

 Nucleosome

4. Euchromatin is characterized by __________

 Loose chromatin packing

 Absence of DNA

 Transcriptional inactivity

 Dense chromatin packing

5. Endosomes are part of _______

 Endomembrane system

 Cytoskeleton

 Protein system

 DNA system

6. __________ is the selective autophagy of mitochondria

 Phagocytosis

 Lipophagy

 Xenophagy

 Mitophagy

7. Cells are considered functional units because they _______

 Perform metabolic activities

 Have membranes

 Contain proteins

 Contain DNA

8. Lysosomes are primarily involved in __________

 ATP synthesis

 DNA replication

 Protein folding

 Intracellular digestion and recycling of biomolecules

9. Which organelle provides membrane sources for autophagosome formation?

 Cytoskeleton

 Nucleus

 Ribosome

 Endoplasmic Reticulum

10. Histone proteins are characterized by a high content of _________

 Basic amino acids

 Lipids

 Acidic amino acids

 Carbohydrates

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Cell Structure and Organelles MCQs Quiz 5

Cell Biology Multiple Choice Questions