| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.11 |
| Score | 0% | 62% |
Which of the following states of matter exists at the lowest temperature?
solid |
|
liquid |
|
none of these |
|
gas |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
Veins __________ blood at __________ pressure.
deoxygenated, low |
|
deoxygenated, high |
|
oxygenated, 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.
In the classification of life, bacteria, archaea and eukaryota are which of the following?
domains |
|
classes |
|
species |
|
kingdoms |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
Examples of secondary consumers include:
wolves |
|
plankton |
|
chickens |
|
grasshoppers |
Secondary consumers (carnivores) subsist mainly on primary consumers. Omnivores are secondary consumers that also eat producers. Examples are rats, fish, and chickens.
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
large intestine |
|
stomach |
|
small intestine |
|
mouth |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.