| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.56 |
| Score | 0% | 71% |
In the heart, blood flows from the __________ ventricle to the lungs then back to the heart via the __________ atrium.
right, left |
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right, right |
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left, right |
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left, left |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.
The number system most used in science is the:
British system |
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American system |
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English system |
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metric system |
The metric system is a number system that designates one base unit for each type of measurement. For example, the base unit for length is the meter and the base unit for mass is the gram.
Which of the following is the formula for work?
\(W = {\vec{F} \over \vec{d} }\) |
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\(W = \vec{F}\vec{d}\) |
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\(W = {F}{d}\) |
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\(W = {{F}\over{d}}\) |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meter (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
large intestine |
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small intestine |
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stomach |
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mouth |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
A dominant trait will be expressed when paired with:
a gene |
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a chromosome |
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a dominant trait |
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a recessive trait |
The traits represented by genes are inherited independently of each other (one from the male and one from the female gamete) and a trait can be dominant or recessive. A dominant trait will be expressed when paired with a recessive trait while two copies of a recessive trait (one from each parent) must be present for the recessive trait to be expressed.