| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.03 |
| Score | 0% | 61% |
Water has a refractive index of 1.33. Which of the following is true?
light travels 1.33 times faster in a vacuum than it does in water |
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light travels 1.33 times slower in a vacuum than it does in water |
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light is 1.33 times dimmer in a vacuum than it is in water |
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light is 1.33 times brighter in a vacuum than it is in water |
The speed of light varies based on the material that the waves are passing through. The refractive index of a material indicates how easily light travels through it compared to how easily light travels through a vacuum. For example, the refractive index of water is 1.33, meaning that light travels 1.33 times faster in a vacuum than it does in water.
Cellular fermentation takes place:
anaerobically |
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in plant cells |
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in the presence of oxygen |
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aerobically |
If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.
In the classification of life, which of the following is not a domain?
animalia |
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eukaryota |
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bacteria |
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archaea |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
What part of the brain is responsible for the major senses (thinking, hearing, seeing)?
cerebrum |
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cerebellum |
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brainstem |
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medulla |
The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).
__________ is caused by a lack of Vitamin C.
diabetes |
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scurvy |
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anemia |
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shingles |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.