| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.05 |
| Score | 0% | 61% |
During digestion, after proteins are broken down where does the undigested food go next?
large intestine |
|
small intestine |
|
stomach |
|
esophagus |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
In the food chain, consumers are classified as which of the following?
secondary |
|
all of these |
|
primary |
|
tertiary |
Most animals consume other organisms to survive. Consumers (heterotrophs) are divided into three types, primary, secondary, and tertiary, based on their place in the food chain.
Earth's breathable air is held in which atmospheric layer?
thermosphere |
|
troposphere |
|
mesosphere |
|
stratosphere |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.
In the heart, the __________ artery and vein manage blood flow to the lungs.
pulmonary |
|
aorta |
|
atrial |
|
capillary |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.
Meteoroids, meteors and meteorites are categorized based on which of the following?
their temperature |
|
their density |
|
their location |
|
their size |
Smaller rocks shed by asteroids and comets are called meteoroids. When these rocks reach Earth's atmosphere, they burn up in the mesosphere and become meteors. If a meteor manages to reach the Earth, it is called a meteorite.