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1 | |
Cancer cells are more sensitive to drugs and radiation than normal cells. |
| | A) | True |
| | B) | False |
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2 | |
There are many possible causes of cancer including viruses, radiation or exposure to chemicals. |
| | A) | True |
| | B) | False |
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3 | |
Oncogenes are gene segments that normally act to inhibit the formation of abnormal cancer cells. |
| | A) | True |
| | B) | False |
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4 | |
The cell membrane is the fixed, outer layer of a cell that functions like a filter to prevent certain molecules from escaping the cell. |
| | A) | True |
| | B) | False |
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5 | |
The human cell membrane and nucleus are discernible under a light microscope. |
| | A) | True |
| | B) | False |
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6 | |
The phospholipid molecules of a membrane are arranged to have their phosphate ends facing the exterior surface. |
| | A) | True |
| | B) | False |
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7 | |
Cholesterol is a lipid that tends to make cell membranes more rigid with it than without it. |
| | A) | True |
| | B) | False |
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8 | |
One mechanism in the skin that prevents cells from becoming loose and separating is the presence of junctions called desmosomes. |
| | A) | True |
| | B) | False |
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9 | |
A TEM is a device that is used to magnify a cell only about 1,000 times. |
| | A) | True |
| | B) | False |
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10 | |
Smooth endoplasmic reticulum has a significant function in protein synthesis. |
| | A) | True |
| | B) | False |
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11 | |
Selectively permeable membranes allow proteins to pass through them. |
| | A) | True |
| | B) | False |
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12 | |
Lysosomes degrade bacteria and worn cells, and can cause disease by destroying normal tissues. |
| | A) | True |
| | B) | False |
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13 | |
Hydrogen peroxide is a chemical toxic to most cells and is produced by some human cells. |
| | A) | True |
| | B) | False |
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14 | |
Peroxisomes can play a role in the detoxification of alcohol. |
| | A) | True |
| | B) | False |
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15 | |
The centrioles are microtubules that play a significant role in ATP and energy production. |
| | A) | True |
| | B) | False |
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16 | |
The nucleus is an organelle enclosed in a double layer of membrane. |
| | A) | True |
| | B) | False |
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17 | |
The nucleolus functions mainly in the synthesis of DNA. |
| | A) | True |
| | B) | False |
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18 | |
Chromatin is the term for the loosely coiled appearance of DNA in a non-dividing cell. |
| | A) | True |
| | B) | False |
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19 | |
In the process of apoptosis, cells shrink and die but the basic structure of the organelles remains constant. |
| | A) | True |
| | B) | False |
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20 | |
DNA has chemicals that direct metabolic processes as well as reproduction. |
| | A) | True |
| | B) | False |
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21 | |
At the point of equilibrium, during diffusion, there is no further movement of any molecules. |
| | A) | True |
| | B) | False |
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22 | |
In general, the rate of diffusion of a molecule is faster in areas of higher temperature. |
| | A) | True |
| | B) | False |
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23 | |
The sugar added to a water solution is termed the solvent. |
| | A) | True |
| | B) | False |
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24 | |
During renal dialysis, a type of diffusion, it possible to remove all of a metabolic waste such as urea, from the blood. |
| | A) | True |
| | B) | False |
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25 | |
Osmosis is the movement of water and can occur through any type of permeable membrane. |
| | A) | True |
| | B) | False |
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26 | |
During osmosis, water moves from an area of lower concentration to the side with the higher concentration. |
| | A) | True |
| | B) | False |
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27 | |
Osmosis is considered a special case of diffusion and is passive in nature. |
| | A) | True |
| | B) | False |
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28 | |
It is possible for an intravenous solution that is labeled isotonic, to be hypotonic to a patient. |
| | A) | True |
| | B) | False |
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29 | |
In active transport, energy is consumed by the cell membrane in the form of ATP. |
| | A) | True |
| | B) | False |
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30 | |
Endocytosis is a passive transport process. |
| | A) | True |
| | B) | False |
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31 | |
Bone cells contain genes for nerve cells that have been repressed. |
| | A) | True |
| | B) | False |
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2002 McGraw-Hill Higher Education