| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.14 |
| Score | 0% | 63% |
In a eukaryotic cell, which organelles deal with proteins?
ribosomes |
|
all of these deal with proteins |
|
Golgi apparatus |
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endoplasmic reticulum |
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.
In the metric system, what prefix represents 103?
centi |
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milli |
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mega |
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kilo |
Kilo is the metric system prefix for 103.
The coldest point in the Earth's atmosphere is reached in which atmospheric layer?
troposphere |
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mesosphere |
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stratosphere |
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thermosphere |
In the mesosphere, temperature again drops as altitude increases until the coldest point in the Earth's atmosphere, the mesopause, is reached where temperatures fall to −225 °F (−143 °C).
In cell biology, where does DNA replication take place?
nucleus |
|
cytoplasm |
|
mitochondria |
|
Golgi apparatus |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Elements in the Periodic Table of the Elements are ordered by which of the following?
atomic number |
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atomic weight |
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atomic mass |
|
number of electron shells |
The Periodic Table of the Elements categorizes elements primarily by the number of protons in their nucleus (atomic number) and secondarily by the characteristics they exhibit.