| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.26 |
| Score | 0% | 65% |
Poor balance could indicate an issue with which part of the nervous system?
cerebrum |
|
spinal cord |
|
medulla |
|
cerebellum |
The cerebellum is a large cluster of nerves at the base of the brain that's responsible for balance, movement, and muscle coordination.
__________ is caused by a lack of Vitamin C.
scurvy |
|
anemia |
|
shingles |
|
diabetes |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
Molecules and atoms that are outputs from a chemical reaction are known as which of the following?
side effects |
|
reactants |
|
results |
|
products |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).
The two heart chambers that pump blood called:
aorta |
|
ventricles |
|
valves |
|
atria |
The heart is the organ that drives the circulatory system. In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart.
The rate of vibration of sound is called:
volume |
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frequency |
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period |
|
amplitude |
The rate of vibration of sound is called frequency and is measured in hertz (Hz). One hertz is one repetition per second and sounds with high frequency have a higher pitch than sounds with lower frequency. Humans can hear sounds in the range of 20 Hz to 20 kHz.