| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.42 |
| Score | 0% | 68% |
A subatomic particle found in the nucleus of an atom. It carries a positive electric charge. This desribes which of the following?
neutron |
|
proton |
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electron |
|
atom |
A proton is a subatomic particle found in the nucleus of an atom. It carries a positive electric charge.
__________ is caused by a lack of iron in the diet.
scurvy |
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anemia |
|
diabetes |
|
shingles |
Anemia, which may cause weakness, dizziness, and headaches is caused by a lack of iron in the diet.
What part of the nervous system controls simple reflexes?
spinal cord |
|
medulla |
|
autonomic |
|
cerebrum |
The spinal cord connects the brain to the body's network of nerves. It carries impulses between all organs and the brain and controls simple reflexes.
Which of these is not a phase in cell division?
interphase |
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anaphase |
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cytokinesis |
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megaphase |
Cell division is the process by which cells replicate genetic material in the nucleus and consists of several phases, beginning with interphase and ending with cytokinesis.
When compared to eukaryotic cells, prokaryotic cells are:
none of these |
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more complex |
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similarly complex |
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less complex |
Cells are classified into one of two groups based on whether or not they have a nucleus. Eukaryotic cells have a nucleus, prokaryotic cells do not have a nucleus and therefore have a less complex structure than eukaryotic cells.