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Name: ______________________________Class: _________________ Date: _________________
Answer Key
Section Quiz
3.1 CELL THEORY
1.
2.
3.
4.
5.
d
c
a
d
a
3.2 CELL ORGANELLES
1.
2.
3.
4.
5.
c
c
c
b
d
3.3 CELL MEMBRANE
1.
2.
3.
4.
5.
c
a
a
a
d
3.4 DIFFUSION AND OSMOSIS
1.
2.
3.
4.
5.
b
b
a
d
a
3.5 ACTIVE TRANSPORT, ENDOCYTOSIS, AND EXOCYTOSIS
1.
2.
3.
4.
5.
c
a
a
d
a
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Biology
1
Cell Structure and Function
Name: ______________________________Class: _________________ Date: _________________
Cell Theory
Section Quiz
Choose the letter of the best answer.
_____ 1. Which invention played the biggest role in the discovery of cells by
early scientists?
a. magnifying glass
b. lens
c. eyeglasses
d. compound microscope
_____ 2. The cell theory states that all organisms are made of cells; cells are the
most basic unit of life; and
a. all existing cells form by free-cell formation.
b. all cells are eukaryotic.
c. all existing cells are produced by other living cells.
d. all cells have a nucleus.
_____ 3. What is the term for the jellylike substance that is contained inside the
cell membrane?
a. cytoplasm
b. DNA
c. organelle
d. nucleus
_____ 4. Unlike a eukaryotic cell, a prokaryotic cell does not have
a. DNA.
b. a cell membrane.
c. cytoplasm.
d. a nucleus.
_____ 5. Specialized structures that work together inside a cell are called
a. organelles.
b. prokaryotes.
c. eukaryotes.
d. nuclei.
_____ 6. Which of the following is a network of proteins that supports and gives
shape to a cell?
a. vesicles
b. vacuole
c. cytoskeleton
d. cytoplasm
_____ 7. What is the main function of the Golgi apparatus?
a. communicate with other cells
b. convert solar energy to chemical energy
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Biology
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Cell Structure and Function
Name: ______________________________Class: _________________ Date: _________________
c. process and deliver proteins
d. copy genetic material
_____ 8. Which of the following organelles can be found in the cytoplasm and
on the surface of the endoplasmic reticulum?
a. mitochondria
b. centrosomes
c. ribosomes
d. centrioles
_____ 9. Which organelle contains enzymes that break down damaged cell
parts?
a. centriole
b. lysosomes
c. vacuole
d. mitochondria
_____ 10. What are the main differences between plant and animal cells?
a. Animal cells are eukaryotes and plant cells are not.
b. Plant cells are eukaryotes and animal cells are not.
c. Animal cells have cell walls and chloroplasts; plant cells do not.
d. Plant cells have cell walls and chloroplasts; animal cells do not.
_____ 11. Which model did scientists develop to describe the cell membrane?
a. phospholipid model
b. dynamic model
c. fluid mosaic model
d. transport model
_____ 12. Which word best describes the structure of the cell membrane?
a. layered
b. rigid
c. impermeable
d. nonpolar
_____ 13. What is a phospholipid composed of?
a. a polar head and a nonpolar tail
b. a nonpolar head and a polar tail
c. a polar head and tail
d. a nonpolar head and tail
_____ 14. Which phrase best describes the property of selective permeability?
a. some molecules pass
b. all ions pass
c. large molecules pass
d. all molecules pass
_____ 15. A ligand produces a response in a cell if it finds the right kind of
a. carbohydrate.
b. hormone.
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Biology
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Cell Structure and Function
Name: ______________________________Class: _________________ Date: _________________
c. membrane.
d. receptor.
_____ 16. Which phrase best describes passive transport?
a. requires transport proteins
b. requires no energy from the cell
c. requires an isotonic solution
d. requires facilitation by enzymes
_____ 17. Water moves into a cell when the solution surrounding the cell is
a. hypertonic.
b. hypotonic.
c. isotonic.
d. concentrated.
_____ 18. What is the term for the diffusion of water across a semipermeable
membrane?
a. osmosis
b. equilibrium
c. transport
d. isotonic
_____ 19. The movement of molecules down a concentration gradient through
transport proteins in the cell membrane is a type of
a. selective transport.
b. osmosis.
c. energy expenditure.
d. facilitated diffusion.
_____ 20. The difference in the concentration of dissolved particles from one
location to another is called a
a. concentration gradient.
b. concentrated solution
c. saline solution.
d. dynamic gradient.
_____ 21. Unlike passive transport, active transport requires
a. concentration gradients.
b. diffusion.
c. energy from the cell.
d. vesicles.
_____ 22. Which process uses proteins to move molecules against a concentration
gradient?
a. active transport
b. passive transport
c. endocytosis
d. phagocytosis
_____ 23. Cells use active transport proteins to
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Biology
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Cell Structure and Function
Name: ______________________________Class: _________________ Date: _________________
a.
b.
c.
d.
obtain molecules they need.
break down molecules.
engulf large particles.
detect the charge of molecules.
_____ 24. A membrane-bound sac used to transport substances into and out of
cells is a
a. pump.
b. macrophage.
c. lysosome.
d. vesicle.
_____ 25. Which process is used to release insulin from pancreatic cells into the
bloodstream?
a. exocytosis
b. endocytosis
c. active transport
d. passive transport
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Biology
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Cell Structure and Function