| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.91 |
| Score | 0% | 58% |
Meteoroids, meteors and meteorites are categorized based on which of the following?
their location |
|
their temperature |
|
their size |
|
their density |
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.
Convert 5C° to F°.
41 |
|
37 |
|
27 |
|
-23 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(5) + 32\)
\(F° = {45 \over 5} + 32\)
\(F° = 9 + 32 = 41\)
Traits represented by genes may be which of the following?
dominant |
|
recessive |
|
all of these |
|
expressed |
The traits represented by genes are inherited independently of each other (one from the male and one from the female gamete) and a trait can be dominant or recessive. A dominant trait will be expressed when paired with a recessive trait while two copies of a recessive trait (one from each parent) must be present for the recessive trait to be expressed.
The two heart chambers that collect blood are called:
ventricles |
|
valves |
|
aorta |
|
atria |
The heart is the organ that drives the circulatory system. In humans, it consists of four chambers with two that collect blood called atria and two that pump blood called ventricles. The heart's valves prevent blood pumped out of the ventricles from flowing back into the heart.
As part of digestion, the liver produces bile which breaks down:
starches |
|
protein |
|
sugars |
|
fat |
The liver produces bile which emulsifies (separates) fat.