| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.53 |
| Score | 0% | 71% |
The respiratory and circulatory systems are similar in that they:
add carbon dioxide |
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transport nutrients |
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transport oxygen |
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deoxygenate blood |
Like the respiratory system, the circulatory system serves to transport oxygen throughout the body while removing carbon dioxide. In addition, the circulatory system transports nutrients from the digestive system.
Which of these is important for the body's maintenance, growth, and repair?
fats |
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protein |
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fiber |
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carbohydrates |
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.
-40°F is how many °C?
-8 |
|
\({40 \over 9}\) |
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-40 |
|
\(-{40 \over 9}\) |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (-40 - 32)\)
\(C° = {5 \over 9} (-72) = {{-72 \times 5} \over 9}\)
\(C° = {-360 \over 9}\)
\(C° = -40\)
Blood is created in:
the liver |
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bone marrow |
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red blood cells |
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the heart |
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.
Which of the following is the formula for power?
\(P = \vec{w}t\) |
|
\(P = {\vec{w} \over t}\) |
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\(P = w t\) |
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\(P = {w \over t}\) |
Power is the rate at which work is performed or work per unit time: \(P = {w \over t}\) and is measured in watts (W).