| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
Neurons are part of the __________ nervous system.
somatic |
|
autonomic |
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peripheral |
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central |
The nervous system consists of the brain and spinal cord (central nervous system) and the peripheral nervous system which is the network of nerve cells (neurons) that collect and distribute signals from the central nervous system throughout the body.
Which of the following is the narrowest classification of life?
species |
|
genus |
|
family |
|
domain |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.
As part of digestion, the liver produces bile which breaks down:
fat |
|
starches |
|
protein |
|
sugars |
The liver produces bile which emulsifies (separates) fat.
The energy posessed by a ball on the window ledge of a tall building is an example of what kind of energy?
inherent |
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potential |
|
gravitational |
|
kinetic |
Kinetic energy is the energy posessed by a moving object. Potential energy is stored energy in a stationary object based on its location, position, shape, or state.
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.