| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.87 |
| Score | 0% | 57% |
The __________ nervous system controls voluntary actions.
autonomic |
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peripheral |
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central |
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somatic |
Part of the peripheral nervous system, the somatic nervous system is made up of nerve fibers that send sensory information to the central nervous system and control voluntary actions.
Which of the following is true about species groups?
a biome is a made up of a group of biospheres |
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an ecosystem is a biological population |
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a community is made up of a group of populations |
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a population is made up of a group of communities |
A population is a group of organisms of the same species who live in the same area at the same time. A community is a group of populations living and interacting with each other in an area.
Earth's troposphere layer is which of the following?
coldest |
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hottest |
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closest to the surface |
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farthest from the surface |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.
In a eukaryotic cell, which organelles deal with proteins?
endoplasmic reticulum |
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Golgi apparatus |
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ribosomes |
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all of these deal with proteins |
The nucleus of a eukaryotic cell contains the genetic material of the cell and is surrounded by cytoplasm which contains many organelles. Ribosomes produce proteins, endoplasmic reticulum helps synthesize proteins and fats, and Golgi apparatus prepares proteins for use.
Convert -20C° to F°.
-4 |
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78 |
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-36 |
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36 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(-20) + 32\)
\(F° = {-180 \over 5} + 32\)
\(F° = -36 + 32 = -4\)