| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.32 |
| Score | 0% | 66% |
What part of the brain is responsible for the major senses (thinking, hearing, seeing)?
cerebrum |
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cerebellum |
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brainstem |
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medulla |
The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).
As part of digestion, the liver produces bile which breaks down:
starches |
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fat |
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sugars |
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protein |
The liver produces bile which emulsifies (separates) fat.
The fossil record is a product of which period of Earth's history?
Cretaceous |
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Jurassic |
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Cenozoic |
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Cambrian |
The Cambrian period is one of the most significant geological time periods. Lasting about 53 million years, it marked a dramatic burst of changes in life on Earth known as the Cambrian Explosion. It is from this period that the majority of the history of life on Earth, as documented by fossils, is found. Called the fossil record, the layering of these mineralized imprints of organisms preserved in sedementary rock have allowed geologists to build a historical record of plant and animal life on Earth.
The transfer of heat by the circulation or movement of the heated parts of a liquid or gas is called:
diffusion |
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convection |
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radiation |
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conduction |
Convection is the transfer of heat by the circulation or movement of the heated parts of a liquid or gas. Examples of heat transfer by convection include water coming to a boil on a stove, ice melting, and steam from a cup of coffee.
Which of blood component carries oxygen?
platelets |
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red blood cells |
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plasma |
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white blood cells |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.