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1 | |
If you wanted to examine only the surface of a plant cell in detail, which of the following microscopes would be the best to use? |
| | A) | compound light microscope |
| | B) | transmission electron microscope |
| | C) | confocal laser scanning microscope |
| | D) | scanning electron microscope |
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2 | |
Which of the following is one advantage of a compound light microscope over the other types of microscopes? |
| | A) | It can see detail that other types cannot. |
| | B) | It uses focussed beam of electrons to create the magnified image. |
| | C) | It can be used to observe live specimen. |
| | D) | It can be used to look at the inside and the outside of a specimen. |
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3 | |
What are the four bases contained in deoxyribonucleic acid (DNA)? |
| | A) | adenine, cytosine, guanine, and thymine |
| | B) | adenosine, cytosine, guanine, and thymine |
| | C) | adenine, cistosine, guanine, and thymine |
| | D) | adenine, cytosine, guanasine, and thymine |
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4 | |
Cancerous cells often differ from normal cells by just one base. What does a cancer cell do? |
| | A) | It kills other cells around it. |
| | B) | It dies because of the incorrect base. |
| | C) | It infects the cells around it, causing the cancer to spread quickly. |
| | D) | It grows and divides uncontrollably, pushing healthy cells out of the way. |
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5 | |
What do chicken stem cells used in research for? |
| | A) | examining how each of the organelles looks in a specialized cell |
| | B) | growing any type of specialized chicken cells |
| | C) | creating a new stem for a sick plant |
| | D) | creating new tissues for people who are sick |
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