| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.66 |
| Score | 0% | 53% |
Convert 5C° to F°.
41 |
|
27 |
|
37 |
|
-23 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(5) + 32\)
\(F° = {45 \over 5} + 32\)
\(F° = 9 + 32 = 41\)
Arteries carry __________ blood at __________ pressure.
oxygenated, low |
|
deoxygenated, high |
|
deoxygenated, low |
|
oxygenated, high |
Veins carry blood back to the heart from the body. While arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood. Like the heart, veins contain valves to prevent blood backflow.
When the clouds become too saturated with water, the water is released as precipitation in the form of:
snow |
|
snow or ice |
|
ice |
|
rain |
Rising into the atmosphere, the water condenses into clouds. When the clouds become too saturated with water, the water is released as snow or ice precipitation which may warm as it falls to reach Earth as rain.
What part of the nervous system controls simple reflexes?
spinal cord |
|
medulla |
|
cerebrum |
|
autonomic |
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.
Which of the following members of the food chain are most alike?
producers and tertiary consumers |
|
herbivores and autotrophs |
|
primary consumers and omnivores |
|
scavengers and decomposers |
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.