| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.42 |
| Score | 0% | 68% |
In cell biology, where does DNA replication take place?
cytoplasm |
|
nucleus |
|
mitochondria |
|
Golgi apparatus |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Blood pressure is generally highest in which of the following?
arteries |
|
heart |
|
veins |
|
capillaries |
Arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood.
During digestion, the kidneys filter substances from the blood. Which of the following is not filtered by the kidneys?
minerals |
|
water |
|
fats |
|
salt |
Chemical waste like excess water, minerals, and salt are filtered from the blood by the kidneys and secreted into the urine. Urine is transported from the kidneys to the bladder through ureters.
Arteries carry __________ blood at __________ pressure.
deoxygenated, high |
|
oxygenated, high |
|
deoxygenated, low |
|
oxygenated, low |
Veins carry blood back to the heart from the body. While arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood. Like the heart, veins contain valves to prevent blood backflow.
Which of these vitamins doesn't come from food?
C |
|
A |
|
Potassium |
|
D |
Vitamins are necessary for a wide variety of bodily processes. Some vitamins like Vitamins A and C come from diet but others, like Vitamin D, are generated in response to sunlight.