| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.37 |
| Score | 0% | 67% |
Which of these is not a type of fat?
cholesterol |
|
saturated |
|
monounsaturated |
|
polyunsaturated |
Fats come in three types, saturated (meats, shellfish, eggs, milk), monounsaturated (olives, almonds, avocados), and polyunsaturated (vegetable oils).
Which of the following temperatures is least like the others?
absolute zero |
|
0K |
|
32°F |
|
-273°C |
Absolute zero is the coldest possible temperature in the universe. In the Kelvin scale, absolute zero is 0K and in the Celsius scale it is -273°C.
Which of these digestive enzymes is not produced by the pancreas?
pancreatic amylase |
|
gastric acid |
|
lipase |
|
trypsin |
The acids produced by the pancreas contain several enzymes that aid in digestion. Lipase converts fat to glycerol and fatty acids. Pancreatic amylase breaks down complex carbohydrates into simple sugars. Trypsin converts polypeptides (the building blocks of protein) into amino acids.
Changes to an object's speed or direction of motion are caused by which of the following?
a force |
|
kinetic energy |
|
power |
|
work |
Force is applied to change an object's speed or direction of motion.
What prevents blood pumped out of the ventricles from flowing back into the heart?
valves |
|
platelets |
|
atria |
|
capillaries |
The heart is the organ that drives the circulatory system. In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart.