| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.12 |
| Score | 0% | 62% |
Which of the following temperatures is least like the others?
32°F |
|
absolute zero |
|
-273°C |
|
0K |
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 heart, blood flows from the right __________ to the lungs then back to the heart via the left __________.
atrium, atrium |
|
ventricle, ventricle |
|
ventricle, atrium |
|
atrium, ventricle |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.
An element in the physical state of __________ maintains a constant volume but their shape depends upon the shape of their container.
gas |
|
solid |
|
plasma |
|
liquid |
In the liquid state, molecules flow freely around each other and exist at a higher temperature range than the same substance in a solid state. Liquids maintain a constant volume but their shape depends upon the shape of their container.
Respiration is the process by which __________ absorb oxygen and eliminate carbon dioxide.
capillaries |
|
bronchioles |
|
blood cells |
|
diaphragms |
The respiratory system manages respiration which is the process by which blood cells absorb oxygen and eliminate carbon dioxide.
In cell biology, the primary difference between anaerobic and aerobic respiration is that aerobic respiration requires:
mitochondria |
|
water |
|
oxygen |
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sugar |
Some plant cells produce their own energy through photosynthesis which is the process by which sunlight, carbon dioxide, and water react to make sugar and oxygen. Animal cells cannot produce their own energy and, instead, generate energy when mitochondria consume outside sugar and oxygen through aerobic respiration.