19. What is the function of the cell membrane?
a) Stores energy
b) Protects the cell and controls what enters and leaves
c) Contains the cell's genetic material
d) Breaks down food particles
20. Which of the following is a feature of prokaryotic cells?
a) Have a nucleus
b) Are smaller and simpler than eukaryotic cells
c) Contain membrane-bound organelles
d) Have a mitochondrion
21. Which organelle is responsible for energy production in the cell?
a) Chloroplast
b) Nucleus
c) Mitochondrion
d) Endoplasmic reticulum
22. What is the function of ribosomes in the cell?
a) Protein synthesis
b) Energy production
c) DNA replication
d) Transporting molecules
23. Which organelle is responsible for making proteins?
a) Mitochondria
b) Ribosomes
c) Chloroplasts
d) Golgi apparatus
24. Which of the following do all cells have?
a) Cell wall
b) Mitochondria
c) Nucleus
d) Cell membrane
25. What is the main role of the cytoplasm in a cell?
a) Stores energy
b) Protects the nucleus
c) Supports and holds the organelles
d) Makes proteins