 |
1 | |
1. The Cell Theory states that |
| | A) | a. cells are the basic unit of life |
| | B) | b. all cells arise from preexisting cells |
| | C) | c. all organisms are composed of cells |
| | D) | d. all of the above |
| | E) | e. only a and c |
|
|
2 | |
2. The cell wall is formed by the nucleus and consists of primary, secondary, tertiary, and quaternary walls. |
| | A) | True |
| | B) | False |
|
|
3 | |
3. The principal component of the cell wall is |
| | A) | a. cellulose. |
| | B) | b. glycoproteins. |
| | C) | c. lignin. |
| | D) | d. pectin. |
| | E) | e. protein. |
|
|
4 | |
4. Plasmodesmata |
| | A) | a. allow for movement of materials between cells. |
| | B) | b. are flattened sacs used for protein storage. |
| | C) | c. contain chromatin. |
| | D) | d. all of the above. |
| | E) | e. Both a and b |
|
|
5 | |
5. Which of the following best describes the fluid mosaic model? |
| | A) | a. Cytoplasmic bridges move materials through cell pits. |
| | B) | b. Pinching off of membranous sacs for protein assemblage. |
| | C) | c. Vesicles and microtubules accumulate across the center of a dividing cell. |
| | D) | d. Double layer of phospholipids with scattered proteins. |
| | E) | e. Double layer of proteins with scattered phospholipids. |
|
|
6 | |
6. Microtubules and microfilaments make up the Golgi apparatus and are involved in lipid formation. |
| | A) | True |
| | B) | False |
|
|
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 |
| | E) | e. chloroplasts, leucoplasts |
|
|
8 | |
8. Which organelle is composed of cristae and a matrix? |
| | A) | a. chloroplast |
| | B) | b. nucleolus |
| | C) | c. mitochondrion |
| | D) | d. central vacuole |
| | E) | e. nucleus |
|
|
9 | |
9. The chloroplast is the site of photosynthesis, whereas the mitochondrion is the site of cellular respiration. |
| | A) | True |
| | B) | False |
|
|
10 | |
10. A cell may become plasmolyzed when it is placed in pure water or a very weak solution. |
| | A) | True |
| | B) | False |
|
|
11 | |
11. Ribosomes |
| | A) | a. are not membrane bound. |
| | B) | b. are the site of protein synthesis. |
| | C) | c. may be free floating in the cytoplasm. |
| | D) | d. may be attached to the endoplasmic reticulum. |
| | E) | e. all of the above. |
|
|
12 | |
12. Chloroplasts and mitochondria are good examples of the Endosymbiont Theory because |
| | A) | a. they both contain their own DNA and can reproduce themselves. |
| | B) | b. they both have chromatids joined by a centromere. |
| | C) | c. they both produce calcium oxalate crystals in their central vacuoles. |
| | D) | d. they both contain inner and outer membranes. |
| | E) | e. none of the above. |
|
|
13 | |
13. DNA and nuclear proteins together make up the granular-appearing chromatin. |
| | A) | True |
| | B) | False |
|
|
14 | |
14. In which phase of the cell cycle is DNA replicated? |
| | A) | a. G1 |
| | B) | b. S |
| | C) | c. G2 |
| | D) | d. metaphase |
| | E) | e. anaphase |
|
|
15 | |
15. The division of the cytoplasm and its organelles occurs during interphase. |
| | A) | True |
| | B) | False |
|
|
16 | |
16. During which phase of mitosis do the chromosomes arrange themselves across the center of the cell? |
| | A) | a. anaphase |
| | B) | b. telophase |
| | C) | c. metaphase |
| | D) | d. prophase |
| | E) | e. none of the above |
|
|
17 | |
17. During _________, the phragmoplast vesicles fuse to form the cell plate and later become the cell wall. |
| | A) | a. interphase |
| | B) | b. prophase |
| | C) | c. telophase |
| | D) | d. cytokinesis |
| | E) | e. metaphase |
|
|
18 | |
18. A clone is created when a leaf cutting from one plant is used to create a whole new plant. |
| | A) | True |
| | B) | False |
|
2006 McGraw-Hill Higher Education