Practice Quiz: The Cell#2

Cell Practice Quiz #2
1. Proteins necessary for cytoplasmic activities are produced by
a. Membrane bound ribosomes
b. Free ribosomes

2. Ribosomes are ____________ organelles
a. Membranous
b. Non membranous
3. The nuclear envelope is continuous with which cytoplasmic structure?
a. The endoplasmic reticulum
b. The peroxisome
4. Which type of microtubule within the mitotic spindle is responsible for pushing the cell’s poles apart during mitosis?
a. kinetochore microtubule
b. polar microtubule
5. The sister chromatids are aligned along the cell’s equator during
a. Anaphase
b. Metaphase
6. Simple lipid molecules ____________ require ATP to move through the plasma membrane
a. Do
b. Do not
7. Sodium ions ________ require ATP to move into the cell
a. Do
b. Do not
8. Potassium ions __________ require ATP to move into the cell
a. Do
b. Do not
9. The act of solutes moving down their concentration gradients is known as
a. Osmosis
b. Diffusion
10. ___________ connects the cytoplasm of adjacent cells allowing chemical and electrical communication to occur
a. Desmosomes
b. Gap junctions
11. The establishment of the resting potential is driven by
a. Concentration gradients
b. Electrical gradients
c. Electrochemical gradients
12. Which ion plays the largest role in the establishment of resting membrane potential?
a. K+
b. Na+
13. At rest, Potassium’s concentration gradient drives potassium ________ the cell, while its electrical gradient _________ the cell.
a. Into, drives it out of
b. Out of, pulls it into
14. The thinnest cytoskeletal rods are called
a. Intermediate filaments
b. Microfilaments
15. _____________ neutralize harmful substances such as alcohol, formaldehyde, and free radicals.
a. Lysosomes
b. Peroxisomes

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