| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.36 |
| Score | 0% | 67% |
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.
Menstruation occurs when:
the fetus is formed |
|
the ovum becomes fertilized |
|
the ovum fails to become fertilized |
|
the zygote is formed |
If the ovum fails to become fertilized, the lining of the uterus sloughs off during menstruation. From puberty to menopause, this cycle of menstruation repeats monthly (except during pregnancy).
The __________ nervous system regulates involuntary activity in the heart, stomach, and intestines.
central |
|
peripheral |
|
somatic |
|
autonomic |
Part of the peripheral nervous system, the autonomic nervous system regulates involuntary activity in the heart, stomach, and intestines.
"An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force." This describes which of Newton's laws of motion?
second |
|
third |
|
first |
|
fourth |
Also known as the law of inertia, Newton's first law of motion states that An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.
In fermentation, what replaces oxygen in anaerobic respiration?
starches |
|
water |
|
ascorbic acid or peptides |
|
lactic acid or alcohol |
If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.