| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.46 |
| Score | 0% | 69% |
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
large intestine |
|
small intestine |
|
mouth |
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stomach |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Respiration is the process by which __________ absorb oxygen and eliminate carbon dioxide.
blood cells |
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bronchioles |
|
diaphragms |
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capillaries |
The respiratory system manages respiration which is the process by which blood cells absorb oxygen and eliminate carbon dioxide.
Which of the following would you find in the side view mirror of a car?
convex mirror |
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convex lens |
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concave lens |
|
concave mirror |
A concave (or converging) mirror bulges inward and focuses reflected light on the mirror's focal point where the mirror's angles of incidence converge. In contrast, a convex (or diverging) mirror bulges outward and diffuses the light waves that strike it. A common use of a concave mirror is in a reflecting telescope, a common use of a convex mirror is in the side view mirror of a car.
"For every action, there is an equal and opposite reaction." This describes which of Newton's laws of motion?
second |
|
fourth |
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first |
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third |
Newton's third law of motion states that For every action, there is an equal and opposite reaction. When an object exerts a force on another object, the second object exerts a force of equal magnitude in the opposite direction on the first object.
Which of blood component carries oxygen?
white blood cells |
|
platelets |
|
red blood cells |
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plasma |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.