| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.74 |
| Score | 0% | 75% |
Which of these is important for the body's maintenance, growth, and repair?
fats |
|
carbohydrates |
|
fiber |
|
protein |
Found in both animal sources (meat, fish, eggs, cheese) and vegetables (beans, nuts, some grains), proteins are important for the body's maintenance, growth, and repair.
The pitch of the siren of an approaching ambulance changes as it approaches you. This is an example of which of the following?
reflection |
|
Doppler effect |
|
refraction |
|
sound radiation |
The Doppler effect occurs when the source or listener (or both) of sound waves is moving. If they're moving closer together, the listener perceives the sound with a higher pitch and, when they're moving apart, the listener perceives the sound with a lower pitch.
In the metric system, what prefix represents 103?
mega |
|
centi |
|
milli |
|
kilo |
Kilo is the metric system prefix for 103.
During digestion, after proteins are broken down where does the undigested food go next?
esophagus |
|
large intestine |
|
stomach |
|
small intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Which of the following is a decomposer?
mosquito |
|
pine tree |
|
ferret |
|
fungi |
Decomposers (saprotrophs) are organisms such as bacteria and fungi that break down the organic matter in the dead bodies of plants and animals into simple nutrients.