| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.16 |
| Score | 0% | 63% |
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
stomach |
|
mouth |
|
small intestine |
|
large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
DNA is encoded through a combination of which of the following?
nucleotides |
|
genes |
|
helix |
|
gametes |
Deoxyribonucleic acid (DNA) is the molecule that contains genetic information. DNA is encoded through a combination of nucleotides that bind together in a specific double helix pattern.
Which of the following is not a medium for sound waves?
vacuum |
|
liquid |
|
none of these is a medium for sound waves |
|
solid |
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.
Stratus clouds are __________clouds characterized by horizontal layering with a broad flat base.
mid-altitude |
|
all-altitude |
|
high-altitude |
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low-altitude |
Clouds are categorized based on their shape, size, and altitude. Stratus clouds are low-altitude clouds characterized by horizontal layering with a broad flat base. When stratus clouds occur on the ground the result is fog.
A major difference between sound waves and light waves is which of the following?
a sound wave cannot travel through a vacuum |
|
a sound wave is mechanical while a light wave is electromagnetic |
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all of these are correct |
|
a sound wave is much slower than a light wave |
A vibrating object produces a sound wave that travels outwardly from the object through a medium (any liquid or solid matter). The vibration disturbs the particles in the surrounding medium, those particles disturb the particules next to them, and so on, as the sound propagates away from the vibration.