| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.46 |
| Score | 0% | 69% |
An endoskeleton (internal skeleton) is a charateristic of __________ animals, including humans.
sentient |
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arthropod |
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vertebrate |
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spiny |
An endoskeleton (internal skeleton) is a charateristic of vertebrate animals, including humans.
What is a major difference between the somatic and autonomic nervous systems?
each belongs to a different nervous system |
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one controls thinking, the other controls feeling |
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one is inherited, the other is learned |
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one controls voluntary activity, one controls involuntary activity |
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 does not represent the freezing point of water?
0°F |
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32°F |
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0°C |
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273K |
The Fahrenheit scale fixes the freezing point of water at 32°F, the Celsuis scale at 0°C, and the Kelvin scale at 273K.
Blood pressure is generally highest in which of the following?
heart |
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arteries |
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veins |
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capillaries |
Arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood.
Which of the following is the correct order for types of radiation from lowest to highest frequency?
infrared waves → microwaves → ultraviolet light |
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visible light → ultraviolet light → radio waves |
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radio waves → visible light → gamma rays |
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microwaves → radio waves → visible light |
The electromagnetic spectrum covers all possible wavelengths and frequencies of radiation. From lowest frequency (longest wavelength) to highest frequency (shortest wavelength) radiation: radio waves → microwaves → infrared waves → visible light → ultraviolet light → X-rays → gamma rays.