| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.08 |
| Score | 0% | 62% |
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
small intestine |
|
mouth |
|
large intestine |
|
stomach |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Molecules and atoms that are outputs from a chemical reaction are known as which of the following?
side effects |
|
products |
|
results |
|
reactants |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).
What part of the nervous system controls simple reflexes?
medulla |
|
autonomic |
|
cerebrum |
|
spinal cord |
The spinal cord connects the brain to the body's network of nerves. It carries impulses between all organs and the brain and controls simple reflexes.
In the heart, blood flows from the __________ ventricle to the lungs then back to the heart via the __________ atrium.
right, left |
|
right, right |
|
left, left |
|
left, right |
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.
Which is the proper order of Earth's atmospheric layers from the surface up to space?
thermosphere, mesosphere, stratosphere, troposphere |
|
mesosphere, thermosphere, stratosphere, troposphere |
|
troposphere, stratosphere, mesosphere, thermosphere |
|
stratosphere, troposphere, mesosphere, thermosphere |
The troposphere is the closest layer to Earth, followed by the stratosphere, mesosphere, and finally the thermosphere which borders space.