| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.56 |
| Score | 0% | 71% |
Which of the following does not represent the freezing point of water?
32°F |
|
0°C |
|
0°F |
|
273K |
The Fahrenheit scale fixes the freezing point of water at 32°F, the Celsuis scale at 0°C, and the Kelvin scale at 273K.
What is the body's largest artery?
capillary |
|
aorta |
|
arteriole |
|
vena cava |
The aorta is the body's largest artery and receives blood from the pulmonary vein via the left ventricle. From there, blood is circulated through the rest of the body through smaller arteries called arterioles that branch out from the heart. Finally, blood is delivered to bodily tissues through capillaries.
Water freezing or boiling is an example of which of the following?
sublimation |
|
heating |
|
phase transition |
|
cooling |
A substance undergoes a phase transition when it moves from one state of matter to another, for example, when water freezes or boils.
Which of the following is the narrowest classification of life?
family |
|
domain |
|
species |
|
genus |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.
Which of blood component carries oxygen?
plasma |
|
red blood cells |
|
white blood cells |
|
platelets |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.