| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
Which of these is not a recognized blood type?
AO |
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AB |
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O |
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B |
Blood is categorized into four different types (A, B, AB, and O) based on the type of antigens found on the outside of the red blood cells. Additionally, each type can be negative or positive based on whether or not the cells have an antigen called the Rh factor.
Which of the following indicates the correct reproductive sequence?
zygote → ovum → fetus |
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ovum → fetus → zygote |
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ovum → zygote → fetus |
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none of these are correct |
During intercourse, the penis ejaculates sperm, produced in the testes, into the vagina. Some of the sperm makes their way to the uterus where, if they encounter an egg to fertilize, unite with the ovum to form a fertilized egg or zygote. The zygote then may implant in the uterus and eventually develop into a fetus.
During digestion, after proteins are broken down where does the undigested food go next?
esophagus |
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stomach |
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large intestine |
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small intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Examples of secondary consumers include:
plankton |
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grasshoppers |
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wolves |
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chickens |
Secondary consumers (carnivores) subsist mainly on primary consumers. Omnivores are secondary consumers that also eat producers. Examples are rats, fish, and chickens.
Which of the following is the formula for power?
\(P = {w \over t}\) |
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\(P = \vec{w}t\) |
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\(P = {\vec{w} \over t}\) |
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\(P = w t\) |
Power is the rate at which work is performed or work per unit time: \(P = {w \over t}\) and is measured in watts (W).