Biology 1100: Cell Theory, Organelles,
Membranes, and Photosynthesis Questions with
Correct Answers
What are the three ideas of the cell theory?
1) All living organisms are composed of cells. 2) The cell is the basic unit of life. 3) All cells
arise from pre-existing cells.
Which cells have cell walls?
Plant cells, fungal cells, and prokaryotic cells (bacteria).
Why must cells stay small?
To maintain a high surface area-to-volume ratio for efficient nutrient uptake and waste
removal.
What is the composition of the cell membrane?
The cell membrane is primarily composed of a phospholipid bilayer with embedded proteins,
cholesterol, and carbohydrates.
What organelles do plant cells have that animal cells don't?
Plant cells have chloroplasts, a central vacuole, and a rigid cell wall. Animal cells have
lysosomes.
What is the difference between eukaryotes and prokaryotes?
Eukaryotes have a nucleus and membrane-bound organelles, while prokaryotes lack a nucleus
and are generally smaller and simpler.
What is the function of the nucleus?
Membranes, and Photosynthesis Questions with
Correct Answers
What are the three ideas of the cell theory?
1) All living organisms are composed of cells. 2) The cell is the basic unit of life. 3) All cells
arise from pre-existing cells.
Which cells have cell walls?
Plant cells, fungal cells, and prokaryotic cells (bacteria).
Why must cells stay small?
To maintain a high surface area-to-volume ratio for efficient nutrient uptake and waste
removal.
What is the composition of the cell membrane?
The cell membrane is primarily composed of a phospholipid bilayer with embedded proteins,
cholesterol, and carbohydrates.
What organelles do plant cells have that animal cells don't?
Plant cells have chloroplasts, a central vacuole, and a rigid cell wall. Animal cells have
lysosomes.
What is the difference between eukaryotes and prokaryotes?
Eukaryotes have a nucleus and membrane-bound organelles, while prokaryotes lack a nucleus
and are generally smaller and simpler.
What is the function of the nucleus?
