| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.10 |
| Score | 0% | 62% |
Which of the following is not true about simple magnets?
all of these are untrue |
|
opposite poles repel each other |
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same poles repel each other |
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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.
What part of the brain is responsible for for balance, movement, and muscle coordination?
cerebellum |
|
medulla |
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cerebrum |
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brainstem |
The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.
Someone who has Rh-factor __________ blood cannot receive blood with a __________ type.
positive, antigen |
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negative, positive |
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positive, negative |
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antigen, negative |
Blood transfer is limited by the type and Rh factor of the blood. Someone who has Rh-factor negative blood cannot receive blood with a positive type but a person with Rh-factor positive type blood can receive Rh-negative blood. Type O negative blood is the universal donor because it can be given to a person with any blood type. Type AB positive is the universal recipient meaning someone with this blood type can receive any other type of blood.
__________ is caused by a lack of Vitamin C.
anemia |
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diabetes |
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scurvy |
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shingles |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
Molecules and atoms that are outputs from a chemical reaction are known as which of the following?
side effects |
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results |
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products |
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reactants |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).