| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
In the classification of life, which of the following is not a domain?
eukaryota |
|
bacteria |
|
animalia |
|
archaea |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
Which of the following is not a base unit in the metric system?
gram |
|
liter |
|
meter |
|
degree Fahrenheit |
The Fahrenheit scale is used for measuring temperature in the British system. The metric system uses the Celsius scale.
Veins __________ blood at __________ pressure.
deoxygenated, high |
|
deoxygenated, low |
|
oxygenated, high |
|
oxygenated, low |
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.
Convert 5C° to F°.
37 |
|
-23 |
|
41 |
|
27 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(5) + 32\)
\(F° = {45 \over 5} + 32\)
\(F° = 9 + 32 = 41\)
The Earth's rocks fall into three categories based on how they're formed. Which of the following is formed from the hardening of molten rock?
sedimentary |
|
igneous |
|
marble |
|
metamorphic |
The Earth's rocks fall into three categories based on how they're formed. Igneous rock (granite, basalt, obsidian) is formed from the hardening of molten rock (lava), sedimentary rock (shale, sandstone, coal) is formed by the gradual despositing and cementing of rock and other debris, and metamorphic rock (marble, slate, quartzite) which is formed when existing rock is altered though pressure, temperature, or chemical processes.