| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
In the food chain, omnivores may be which of the following?
secondary or tertiary consumers |
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primary or secondary consumers |
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secondary consumers or scavengers |
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primary or tertiary consumers |
Secondary or tertiary consumers may be omnivores.
Someone who has Rh-factor __________ blood cannot receive blood with a __________ type.
positive, antigen |
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negative, positive |
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positive, negative |
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antigen, negative |
Blood transfer is limited by the type and Rh factor of the blood. Someone who has Rh-factor negative blood cannot receive blood with a positive type but a person with Rh-factor positive type blood can receive Rh-negative blood. Type O negative blood is the universal donor because it can be given to a person with any blood type. Type AB positive is the universal recipient meaning someone with this blood type can receive any other type of blood.
What is a major difference between the somatic and autonomic nervous systems?
one is inherited, the other is learned |
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each belongs to a different nervous system |
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one controls voluntary activity, one controls involuntary activity |
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one controls thinking, the other controls feeling |
Both are part of the peripheral nervous system. The somatic nervous system sends sensory information to the central nervous system and controls voluntary actions while the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines.
Tough fibrous cords of connective tissue that connect muscles to the skeleton are called:
cartilage |
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ligaments |
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vertebra |
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tendons |
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).
The hottest of Earth's atmospheric layers is which of the following?
stratosphere |
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mesosphere |
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thermosphere |
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troposphere |
Temperatures again increase with altitude in the thermosphere which is the hottest (4,530 °F / 2,500 °C) atmospheric layer due to direct exposure to the Sun's radiation. However, the gas in this layer is highly diluted so even though the atoms of gas may be very high in temperature, there are too few of them to effectively transfer much heat.