| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.63 |
| Score | 0% | 73% |
Gametes have how many pairs of chromosomes?
4 |
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23 |
|
2 |
|
46 |
Reproductive (haploid) cells known as gametes have half as many (23) pairs of chromosomes as normal (diploid) cells. When the male gamete (sperm) combines with the female gamete (ovum) through meiosis to form a zygote, each gamete supplies half the chromosomes needed to form the normal diploid cells.
Which of the following is the formula for work?
\(W = {{F}\over{d}}\) |
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\(W = {\vec{F} \over \vec{d} }\) |
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\(W = {F}{d}\) |
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\(W = \vec{F}\vec{d}\) |
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: \(W = \vec{F}\vec{d}\)
A subatomic particle found in the nucleus of an atom. It carries a positive electric charge. This desribes which of the following?
proton |
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atom |
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neutron |
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electron |
A proton is a subatomic particle found in the nucleus of an atom. It carries a positive electric charge.
Work is measured in:
horsepower |
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watts |
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amps |
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joules or newton-meters |
Work is performed on an object when an applied force causes displacement along the same vector. Measured in joules (J) or newton-meters (Nm), work is calculated by multiplying force times displacement: \(W = \vec{F}\vec{d}\)
__________ is caused by a lack of iron in the diet.
diabetes |
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scurvy |
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shingles |
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anemia |
Anemia, which may cause weakness, dizziness, and headaches is caused by a lack of iron in the diet.