| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.73 |
| Score | 0% | 75% |
During digestion, after proteins are broken down where does the undigested food go next?
large intestine |
|
stomach |
|
small intestine |
|
esophagus |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Which of the following is not a base unit in the metric system?
degree Fahrenheit |
|
liter |
|
meter |
|
gram |
The Fahrenheit scale is used for measuring temperature in the British system. The metric system uses the Celsius scale.
Gametes have how many pairs of chromosomes?
4 |
|
46 |
|
23 |
|
2 |
Reproductive (haploid) cells known as gametes have half as many (23) pairs of chromosomes as normal (diploid) cells. When the male gamete (sperm) combines with the female gamete (ovum) through meiosis to form a zygote, each gamete supplies half the chromosomes needed to form the normal diploid cells.
The pitch of the siren of an approaching ambulance changes as it approaches you. This is an example of which of the following?
Doppler effect |
|
refraction |
|
reflection |
|
sound radiation |
The Doppler effect occurs when the source or listener (or both) of sound waves is moving. If they're moving closer together, the listener perceives the sound with a higher pitch and, when they're moving apart, the listener perceives the sound with a lower pitch.
Which of blood component fights infection?
plasma |
|
platelets |
|
white blood cells |
|
red blood cells |
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.