Cell Structure and Function

Which phenomenon explains the movement of CO₂ across the cell membrane?

• Osmosis
• Active transport
• Phagocytosis
• Diffusion

Which statement is true about viruses?

• They reproduce on their own
• They have ribosomes
• They perform photosynthesis
• They lack membranes and cellular structure

Which organelle helps in the digestion of food in Amoeba?

• Contractile vacuole
• Lysosome
• Golgi apparatus
• Food vacuole

Which organelle is unique to plant cells?

• Mitochondria
• Ribosome
• Lysosome
• Chloroplast

Which of the following best describes cytoplasm?

• Storage sac for water
• Site of ATP production
• Packaging center of the cell
• Fluid content inside the plasma membrane