CSTPractice Time: Cell Biology

1. Compared to a skin cell, a muscle cell is likely to have more — F Golgi bodies G mitochondria H cell membranes J chloroplasts

Think about what a

muscle cell does…or have

to do!

2. A cell with numerous ribosomes is

probably specialized for —

F enzyme storage

G energy production

H cell division

J protein synthesis

3. Which of the following organelles is

present in both prokaryotes and

eukaryotes?

A Nucleus

B Ribosome

C Golgi body

D Endoplasmic reticulum

4. In the cell membrane model shown

below, the molecules which move large

molecules into and out of the cell areknown as —A cholesterolB proteins C lipidsD carbohydrates

5. The eukaryotic organism describedabove should be classified as — A an animal B a bacterium C a fungus D a plant

6. An important difference between viruses and living cells is that viruses —

A cannot reproduce outside of cells

B contain more nuclei than cells

C cannot mutate but cells canD need an energy source but

cells do not

7. Some organelles have their own DNA

that is distinct from the cell’s nuclearDNA. This is true of which organelle?

A cell wallB mitochondrionC plasma membraneD vacuole

8. Protein synthesis occurs at which of

the structures shown below?

9. Which cell process will movesubstances against a concentrationgradient?

A diffusionB facilitated

diffusionC osmosisD active

transport

10. Which of the following is a main function of structure 5?

A. to store carbohydrates for later use

B. to give the cell a rigid structure

C. to package proteins for export

D. to carry out photosynthesis