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1 | |
1. The Cell Theory states that cells are the basic unit of life and that all cells arise from preexisting cells.
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| | A) | True
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| | B) | False
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2 | |
2. The cell wall is formed by the nucleus and consists of primary, secondary, tertiary, and quaternary walls.
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| | A) | True
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| | B) | False
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3 | |
3. The principal component of the cell wall is
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| | A) | a. cellulose.
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| | B) | b. glycoproteins.
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| | C) | c. lignin.
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| | D) | d. pectin.
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4 | |
4. Plasmodesmata
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| | A) | a. allow for movement of materials between cells.
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| | B) | b. are flattened sacs used for protein storage.
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| | C) | c. contain chromatin.
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| | D) | d. all of the above.
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5 | |
5. Which of the following best describes the fluid mosaic model?
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| | A) | a. Cytoplasmic bridges move materials through cell pits.
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| | B) | b. Pinching off of membranous sacs for protein assemblage.
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| | C) | c. Vesicles and microtubules accumulate across the center of a dividing cell.
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| | D) | d. Double layer of phospholipids with scattered proteins.
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6 | |
6. Microtubules and microfilaments make up the Golgi apparatus and are involved in lipid formation.
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| | A) | True
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| | B) | False
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7 | |
7. Plastids that contain starch are called _________, whereas those that contain red and yellow pigments are called_________. |
| | A) | a. chromoplasts, leucoplasts |
| | B) | b. amyloplasts, chromoplasts |
| | C) | c. leucoplasts, chloroplasts |
| | D) | d. chloroplasts, amyloplasts |
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8 | |
8. Which organelle is composed of cristae and a matrix?
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| | A) | a. chloroplast
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| | B) | b. nucleolus
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| | C) | c. mitochondrion
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| | D) | d. central vacuole
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9 | |
9. The chloroplast is the site of photosynthesis, whereas the mitochondrion is the site of cellular respiration.
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| | A) | True
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| | B) | False
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10 | |
10. A cell may become plasmolyzed when it is placed in pure water or a very weak solution.
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| | A) | True
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| | B) | False
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11 | |
11. Ribosomes
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| | A) | a. are not membrane bound.
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| | B) | b. are the site of protein synthesis.
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| | C) | c. may be free floating in the cytoplasm.
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| | D) | d. may be attached to the endoplasmic reticulum.
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| | E) | e. all of the above.
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| | F) | f. only a, b, and c are correct.
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12 | |
12. Chloroplasts and mitochondria are good examples of the Endosymbiont Theory because
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| | A) | a. they both contain their own DNA and can reproduce themselves.
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| | B) | b. they both have chromatids joined by a centromere.
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| | C) | c. they both produce calcium oxalate crystals in their central vacuoles.
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| | D) | d. none of the above.
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13 | |
13. DNA and nuclear proteins together make up the granular-appearing chromatin.
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| | A) | True
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| | B) | False
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14 | |
14. In which phase of the cell cycle is DNA replicated?
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| | A) | a. G1
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| | B) | b. S
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| | C) | c. G2
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| | D) | d. metaphase
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15 | |
15. The division of the cytoplasm and its organelles occurs during interphase.
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| | A) | True
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| | B) | False
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16 | |
16. During which phase of mitosis do the chromosomes arrange themselves across the center of the cell?
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| | A) | a. anaphase
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| | B) | b. telophase
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| | C) | c. metaphase
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| | D) | d. prophase
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17 | |
17. During _________, the phragmoplast vesicles fuse to form the cell plate and later become the cell wall.
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| | A) | a. interphase
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| | B) | b. prophase
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| | C) | c. telophase
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| | D) | d. cytokinesis
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18 | |
18. A clone is created when a leaf cutting from one plant is used to create a whole new plant.
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| | A) | True
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| | B) | False
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2003 McGraw-Hill Higher Education