| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
Which of the following states of matter exists at the highest temperature?
solid |
|
none of these |
|
liquid |
|
gas |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
The two heart chambers that collect blood are called:
aorta |
|
ventricles |
|
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.
Which of the following temperatures is least like the others?
0K |
|
absolute zero |
|
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.
In the classification of life, bacteria, archaea and eukaryota are which of the following?
kingdoms |
|
classes |
|
species |
|
domains |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
An endoskeleton (internal skeleton) is a charateristic of __________ animals, including humans.
sentient |
|
spiny |
|
arthropod |
|
vertebrate |
An endoskeleton (internal skeleton) is a charateristic of vertebrate animals, including humans.