| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
50°F is how many °C?
-10 |
|
58 |
|
10 |
|
122 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (50 - 32)\)
\(C° = {5 \over 9} (18)\)
\(C° = {90 \over 9}\)
\(C° = 10\)
In cell biology, the primary difference between anaerobic and aerobic respiration is that aerobic respiration requires:
sugar |
|
mitochondria |
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water |
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oxygen |
Some plant cells produce their own energy through photosynthesis which is the process by which sunlight, carbon dioxide, and water react to make sugar and oxygen. Animal cells cannot produce their own energy and, instead, generate energy when mitochondria consume outside sugar and oxygen through aerobic respiration.
Velocity is the rate at which an object changes position. What is the formula for velocity?
none of these |
|
\(\vec{v} = { \vec{d} \over t } \) |
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\(\vec{v} = { t \over \vec{d} } \) |
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\(\vec{v} = \vec{d}t \) |
Velocity is the rate at which an object changes position. Rate is measured in time and position is measured in displacement so the formula for velocity becomes \(\vec{v} = { \vec{d} \over t } \)
What part of the nervous system controls simple reflexes?
medulla |
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autonomic |
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cerebrum |
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spinal cord |
The spinal cord connects the brain to the body's network of nerves. It carries impulses between all organs and the brain and controls simple reflexes.
Earth's troposphere layer is which of the following?
hottest |
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farthest from the surface |
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coldest |
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closest to 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.