| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.03 |
| Score | 0% | 61% |
Universal donor blood can be given to a person with any blood type. Which blood type is the universal donor?
O-positive |
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AB |
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O |
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O-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.
Minerals, vitamins, and fiber are:
proteins |
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carbohydrates |
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micronutrients |
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macronutrients |
Minterals, vitamins, and fiber are micronutrients while proteins, carbohydrates, and fats are macronutrients.
In cell biology, where does DNA replication take place?
Golgi apparatus |
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cytoplasm |
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nucleus |
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mitochondria |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Which of the following temperatures is least like the others?
-273°C |
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0K |
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32°F |
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absolute zero |
Absolute zero is the coldest possible temperature in the universe. In the Kelvin scale, absolute zero is 0K and in the Celsius scale it is -273°C.
A major difference between sound waves and light waves is which of the following?
a sound wave cannot travel through a vacuum |
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a sound wave is mechanical while a light wave is electromagnetic |
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a sound wave is much slower than a light wave |
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all of these are correct |
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.