| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.56 |
| Score | 0% | 71% |
A person's genotype is their genetic makeup and includes:
both dominant and recessive alleles |
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phenotypes |
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dominant alleles |
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recessive 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.
Which of the following is not true of light waves?
are mechanical waves |
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are electromagnetic waves |
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travel faster than sound waves |
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can travel through a vacuum |
Unlike mechanical sound waves that require a physical medium for propagation, light waves are electromagnetic and can travel through empty space. Light waves are also much faster, travelling at 186,000 m/s vs. 343 m/s for sound waves.
In fermentation, what replaces oxygen in anaerobic respiration?
water |
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starches |
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lactic acid or alcohol |
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ascorbic acid or peptides |
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.
The gravitational interaction of Earth and the Moon is responsible for which of these?
seasons |
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day and night cycle |
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the northern lights |
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tides |
Tides are caused by the gravitational interaction of Earth and the Moon.
"For every action, there is an equal and opposite reaction." This describes which of Newton's laws of motion?
second |
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fourth |
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third |
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first |
Newton's third law of motion states that For every action, there is an equal and opposite reaction. When an object exerts a force on another object, the second object exerts a force of equal magnitude in the opposite direction on the first object.