| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.94 |
| Score | 0% | 59% |
__________ is caused by a lack of Vitamin C.
shingles |
|
diabetes |
|
scurvy |
|
anemia |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
Veins __________ blood at __________ pressure.
oxygenated, low |
|
deoxygenated, low |
|
oxygenated, high |
|
deoxygenated, high |
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 the following represents the largest value?
1 kL |
|
1 mL |
|
1 cL |
|
1 ML |
Mega (M) is 106, kilo (k) is 103, centi (c) is 10-2, milli (m) is 10-3 so 1 ML represents the largest value.
Meteoroids, meteors and meteorites are categorized based on which of the following?
their size |
|
their temperature |
|
their density |
|
their location |
Smaller rocks shed by asteroids and comets are called meteoroids. When these rocks reach Earth's atmosphere, they burn up in the mesosphere and become meteors. If a meteor manages to reach the Earth, it is called a meteorite.
In the food chain, consumers are classified as which of the following?
secondary |
|
primary |
|
all of these |
|
tertiary |
Most animals consume other organisms to survive. Consumers (heterotrophs) are divided into three types, primary, secondary, and tertiary, based on their place in the food chain.