| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.43 |
| Score | 0% | 69% |
Which of the following is not true about simple magnets?
same poles repel each other |
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opposite poles attract each other |
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opposite poles repel each other |
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all of these are untrue |
Simple magnets have two poles, north and south, and opposite poles attract each other (N attracts S, S attracts N). Likewise, the same pole of two magnets repel (N repels N, S repels S). The Earth has a magnetic field and North and South Poles which enables the use of a magnetic compass to determine direction.
In fermentation, what replaces oxygen in anaerobic respiration?
starches |
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lactic acid or alcohol |
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water |
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ascorbic acid or peptides |
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.
Tough fibrous cords of connective tissue that connect muscles to the skeleton are called:
tendons |
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cartilage |
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ligaments |
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vertebra |
Tough fibrous cords of connective tissue called tendons connect muscles to the skeleton while another type of connective tissue called ligaments connect bones to other bones at joints (elbow, knee, fingers, spinal column).
Herbivores are __________ that subsist on producers like plants and fungus.
secondary consumers |
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primary consumers |
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tertiary consumers |
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scavengers |
Primary consumers (herbivores) subsist on producers like plants and fungus. Examples are grasshoppers, cows, and plankton.
A dominant trait will be expressed when paired with:
a dominant trait |
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a recessive trait |
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a chromosome |
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a gene |
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.