| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.51 |
| Score | 0% | 70% |
In the metric system, what prefix represents 103?
mega |
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kilo |
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milli |
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centi |
Kilo is the metric system prefix for 103.
Molecules and atoms that are inputs to a chemical reaction are known as which of the following?
reactants |
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products |
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components |
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fuel |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).
Which of these is not a function of bone in the human skeletal system?
produce blood cells |
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store vitamins |
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store minerals |
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protect bodily organs |
Hard bones provide primary support for the endoskeleton while more flexible cartilage is found at the end of all bones, at the joints, and in the nose and ears. In addition to providing support and protecting bodily organs, bones also produce blood cells and store minerals like calcium.
Which of these is important for the body's maintenance, growth, and repair?
protein |
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fiber |
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fats |
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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.
Vector quantities are fully described by which of the following?
a magnitude only |
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a magnitude and a direction |
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a direction only |
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a direction and a polarity |
Velocity and displacement are vector quantities which means each is fully described by both a magnitude and a direction. In contrast, scalar quantities are quantities that are fully described by a magnitude only. A variable indicating a vector quantity will often be shown with an arrow symbol: \(\vec{v}\)