| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.27 |
| Score | 0% | 65% |
Convert 0C° to F°.
-32 |
|
0 |
|
16 |
|
32 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(0) + 32\)
\(F° = 0 + 32 = 32\)
Antigens are found on the outside of which blood cells?
white |
|
platelets |
|
red |
|
plasma |
Blood is categorized into four different types (A, B, AB, and O) based on the type of antigens found on the outside of the red blood cells. Additionally, each type can be negative or positive based on whether or not the cells have an antigen called the Rh factor.
The rate of vibration of sound is called:
frequency |
|
volume |
|
period |
|
amplitude |
The rate of vibration of sound is called frequency and is measured in hertz (Hz). One hertz is one repetition per second and sounds with high frequency have a higher pitch than sounds with lower frequency. Humans can hear sounds in the range of 20 Hz to 20 kHz.
Blood is created in:
red blood cells |
|
the liver |
|
bone marrow |
|
the heart |
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.
During digestion, after proteins are broken down where does the undigested food go next?
small intestine |
|
large intestine |
|
stomach |
|
esophagus |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.