| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.35 |
| Score | 0% | 67% |
What is a major difference between the somatic and autonomic nervous systems?
one is inherited, the other is learned |
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one controls voluntary activity, one controls involuntary activity |
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one controls thinking, the other controls feeling |
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each belongs to a different nervous system |
Both are part of the peripheral nervous system. The somatic nervous system sends sensory information to the central nervous system and controls voluntary actions while the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines.
Which of the following is the narrowest classification of life?
domain |
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family |
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genus |
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species |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.
In the pancreas, lipase converts fat to:
complex carbohydrates |
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amino acids |
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glycerol and fatty acids |
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simple sugars |
The acids produced by the pancreas contain several enzymes that aid in digestion. Lipase converts fat to glycerol and fatty acids. Pancreatic amylase breaks down complex carbohydrates into simple sugars. Trypsin converts polypeptides (the building blocks of protein) into amino acids.
The heart __________ blood.
filters |
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creates |
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deoxygenates |
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oxygenates |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.
Which of the following is not true about mass and weight?
mass is the amount of matter something has |
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mass depends on the location where it is measured |
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weight depends on the location where it is measured |
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weight is the force exerted on an object by gravity |
Mass is the amount of matter something has while weight is the force exerted on an object's mass by gravity. So, although a person's mass doesn't change when going from the Earth to the Moon, their weight will decrease because the force of the Moon's gravity is much less than that of Earth.