| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.23 |
| Score | 0% | 65% |
In cell biology, where does DNA replication take place?
nucleus |
|
mitochondria |
|
Golgi apparatus |
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cytoplasm |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
In a eukaryotic cell, which organelles deal with proteins?
ribosomes |
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all of these deal with proteins |
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endoplasmic reticulum |
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Golgi apparatus |
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.
What part of the brain is responsible for for balance, movement, and muscle coordination?
cerebrum |
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medulla |
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brainstem |
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cerebellum |
The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.
The gravitational interaction of Earth and the Moon is responsible for which of these?
tides |
|
the northern lights |
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day and night cycle |
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seasons |
Tides are caused by the gravitational interaction of Earth and the Moon.
Veins __________ blood at __________ pressure.
oxygenated, high |
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deoxygenated, high |
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oxygenated, low |
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deoxygenated, low |
Veins carry blood back to the heart from the body. While arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood. Like the heart, veins contain valves to prevent blood backflow.