| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
As part of digestion, the liver produces bile which breaks down:
starches |
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sugars |
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protein |
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fat |
The liver produces bile which emulsifies (separates) fat.
Water has a refractive index of 1.33. Which of the following is true?
light travels 1.33 times slower in a vacuum than it does in water |
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light travels 1.33 times faster 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.
In the classification of life, which of the following is not a kingdom?
animals |
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bacteria |
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plants |
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fungi |
Below domain, life is classified into six kingdoms: plants, animals, archaebacteria, eubacteria, and fungi. The last kingdom, protists, include all microscopic organisms that are not bacteria, animals, plants or fungi. (Archaebacteria and eubacteria are sometimes combined into a single kingdom, monera.)
Bronchioles, alveolus, and capillaries are vital parts of which bodily system?
digestion |
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respiration |
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circulation |
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nervous |
The trachea branches into the left and right bronchi which each lead to a lung where the bronchi subdivide into smaller tubes called bronchioles. Each bronchiole ends in a small sac called an alveolus which allows oxygen from the air to enter the bloodstream via tiny blood vessels called capillaries.
A person's genotype is their genetic makeup and includes:
recessive alleles |
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both dominant and recessive alleles |
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phenotypes |
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dominant alleles |
A person's genotype is their genetic makeup and includes both dominant and recessive alleles. Phenotype is how the genes express themselves in physical characteristics.