| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.69 |
| Score | 0% | 74% |
Which of these is important for the body's maintenance, growth, and repair?
carbohydrates |
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fats |
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protein |
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fiber |
Found in both animal sources (meat, fish, eggs, cheese) and vegetables (beans, nuts, some grains), proteins are important for the body's maintenance, growth, and repair.
Which is the proper order of Earth's atmospheric layers from the surface up to space?
mesosphere, thermosphere, stratosphere, troposphere |
|
troposphere, stratosphere, mesosphere, thermosphere |
|
thermosphere, mesosphere, stratosphere, troposphere |
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stratosphere, troposphere, mesosphere, thermosphere |
The troposphere is the closest layer to Earth, followed by the stratosphere, mesosphere, and finally the thermosphere which borders space.
Which of the following is the formula for power?
\(P = \vec{w}t\) |
|
\(P = w t\) |
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\(P = {w \over t}\) |
|
\(P = {\vec{w} \over t}\) |
Power is the rate at which work is performed or work per unit time: \(P = {w \over t}\) and is measured in watts (W).
In the food chain, consumers are classified as which of the following?
primary |
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all of these |
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tertiary |
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secondary |
Most animals consume other organisms to survive. Consumers (heterotrophs) are divided into three types, primary, secondary, and tertiary, based on their place in the food chain.
Which of these is not a component of blood?
red blood cells |
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plasma |
|
marrow |
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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.