| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.62 |
| Score | 0% | 72% |
Gametes have how many pairs of chromosomes?
2 |
|
4 |
|
23 |
|
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.
The large intestine does which of the following?
breaks down proteins |
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breaks down starches |
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breaks down fats |
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processes the physical waste produced by digestion |
The large intestine (colon) follows the small intestine and processes the physical waste produced by digestion, absorbing water and minerials that remain back into the body. Solid waste is then stored in the rectum while liquid waste is stored in the bladder.
What part of the brain is responsible for the major senses (thinking, hearing, seeing)?
medulla |
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cerebellum |
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brainstem |
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cerebrum |
The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).
In the food chain, omnivores may be which of the following?
primary or secondary consumers |
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secondary consumers or scavengers |
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primary or tertiary consumers |
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secondary or tertiary consumers |
Secondary or tertiary consumers may be omnivores.
The number system most used in science is the:
metric system |
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English system |
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American system |
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British 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.