| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.41 |
| Score | 0% | 68% |
Which of the following is the formula for work?
\(W = {F}{d}\) |
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\(W = {{F}\over{d}}\) |
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\(W = \vec{F}\vec{d}\) |
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\(W = {\vec{F} \over \vec{d} }\) |
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: \(W = \vec{F}\vec{d}\)
In fermentation, what replaces oxygen in anaerobic respiration?
lactic acid or alcohol |
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water |
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ascorbic acid or peptides |
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starches |
If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.
Carbohydrates are found in:
animal sources |
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food additives |
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vegetable oils |
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sugars and starches |
Carbohydrates are major sources of energy for the body and are found in sugars (fruit, cane sugar, beets) and starches (bread, rice, potatoes, pasta).
A subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. This desribes which of the following?
electron |
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isotope |
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neutron |
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proton |
An electron is a subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. Generally, an atom has the same number of negative electrons orbiting the nucleus as it does positive protons inside.
Cellular fermentation takes place:
anaerobically |
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in the presence of oxygen |
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aerobically |
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in plant cells |
If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.