| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.24 |
| Score | 0% | 65% |
The two heart chambers that collect blood are called:
ventricles |
|
aorta |
|
atria |
|
valves |
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.
Scavengers break down the dead bodies of plants and animals into which of the following?
producers |
|
simple nutrients |
|
complex carbohydrates |
|
carrion |
Like decomposers, scavengers also break down the dead bodies of plants and animals into simple nutrients. The difference is that scavengers operate on much larger refuse and dead animals (carrion). Decomposers then consume the much smaller particles left over by the scavengers.
Convert 5C° to F°.
-23 |
|
37 |
|
41 |
|
27 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(5) + 32\)
\(F° = {45 \over 5} + 32\)
\(F° = 9 + 32 = 41\)
Which of the following is not a terrestrial planet?
Jupiter |
|
Mercury |
|
Earth |
|
Venus |
The four planets closest to the Sun (Mercury, Venus, Earth, and Mars) are called terrestrial (Earth-like) planets because, like the Earth, they're solid with inner metal cores covered by rocky surfaces.
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
decrease, raise |
|
decrease, stabilize |
|
raise, decrease |
|
stabilize, raise |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.