| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.03 |
| Score | 0% | 61% |
A person's genotype is their genetic makeup and includes:
phenotypes |
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dominant alleles |
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both dominant and recessive 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 describes how a person's genes express themselves in physical characteristics?
genotype |
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chromotype |
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phenotype |
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DNA |
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 does not filter air as part of the respiratory system?
epiglottis |
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trachea |
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nasal cavity |
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pharynx |
After air enters through the nose, it passes through the nasal cavity which filters, moistens, and warms it. Further filtering takes place in the pharynx, which also helps protect against infection, and then in the trachea which is just past the epiglottis which prevents food from entering the airway.
Neurons are part of the __________ nervous system.
autonomic |
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somatic |
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central |
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peripheral |
The nervous system consists of the brain and spinal cord (central nervous system) and the peripheral nervous system which is the network of nerve cells (neurons) that collect and distribute signals from the central nervous system throughout the body.
Which of the following is the formula for power?
\(P = w t\) |
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\(P = {w \over t}\) |
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\(P = \vec{w}t\) |
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\(P = {\vec{w} \over t}\) |
Power is the rate at which work is performed or work per unit time: \(P = {w \over t}\) and is measured in watts (W).