| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.12 |
| Score | 0% | 62% |
Changes to an object's speed or direction of motion are caused by which of the following?
a force |
|
kinetic energy |
|
power |
|
work |
Force is applied to change an object's speed or direction of motion.
The rows of the Periodic Table of the Elements are called:
groups |
|
families |
|
shells |
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periods |
The rows of the Periodic Table are called periods and contain elements that have the same number of electron shells ordered from lower to higher atomic number.
The __________ nervous system controls voluntary actions.
central |
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somatic |
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autonomic |
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peripheral |
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.
In cell biology, where does DNA replication take place?
Golgi apparatus |
|
cytoplasm |
|
mitochondria |
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nucleus |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Which of the following is not true about simple magnets?
opposite poles repel each other |
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same poles repel each other |
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all of these are untrue |
|
opposite poles attract each other |
Simple magnets have two poles, north and south, and opposite poles attract each other (N attracts S, S attracts N). Likewise, the same pole of two magnets repel (N repels N, S repels S). The Earth has a magnetic field and North and South Poles which enables the use of a magnetic compass to determine direction.