Cell Structure and Organelles MCQs Quiz 26 Posted on April 6, 2026Author agropublishers 0 1. The genetic material in prokaryotes is primarily located in the _______ Nucleoid region Nucleus Mitochondria Golgi body 2. Small molecules cross the nuclear envelope mainly by _______ through nuclear pores Vesicular transport Endocytosis Passive diffusion Active transport 3. Phospholipids are classified as amphipathic because they _______ Are composed of proteins and sugars Contain only lipids Are fully hydrophobic Have both hydrophilic and hydrophobic regions 4. In chromosomes, deletion results in _______ Gain of DNA Replication Loss of segment Protein folding 5. Mitochondrial inner membrane is specialized for _______ DNA packaging Lipid storage Protein secretion ATP generation via oxidative phosphorylation 6. Lysosomal enzymes function optimally at _______ pH Acidic Alkaline Neutral Variable 7. An increase in the inner mitochondrial membrane’s permeability to protons would _______. Decrease ATP yield per molecule of substrate due to uncoupling Halt glycolysis in the cytosol Increase ATP production Enhance NADH oxidation 8. Prokaryotic ribosomes have a sedimentation coefficient of _______ 60S 70S 90S 80S 9. Which factor determines the permeability of molecules across the membrane? Color of molecule Size and polarity of molecules DNA sequence Charge only 10. The size of eukaryotic cells typically ranges from________ to _________ diameter 100 to 500 µm 10 to 500 µm 0.1 to 5 mm 10 to100 µm Loading … Question 1 of 10
