| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.33 |
| Score | 0% | 67% |
In the classification of life, which of the following is not a domain?
eukaryota |
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animalia |
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bacteria |
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archaea |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
When compared to eukaryotic cells, prokaryotic cells are:
more complex |
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less complex |
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none of these |
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similarly 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.
A subatomic particle found in the nucleus of an atom. It carries a positive electric charge. This desribes which of the following?
atom |
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electron |
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neutron |
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proton |
A proton is a subatomic particle found in the nucleus of an atom. It carries a positive electric charge.
This skeletal system is common in arthropods like insects, spiders, and crustaceans.
endoskeleton |
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bone |
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exoskeleton |
|
vertebrate |
An exoskeleton (external skeleton) is common in arthropods like insects, spiders, and crustaceans.
Antigens in the blood determine:
blood oxygen capacity |
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blood type |
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Rh factor |
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negative or positive status |
Blood is categorized into four different types (A, B, AB, and O) based on the type of antigens found on the outside of the red blood cells. Additionally, each type can be negative or positive based on whether or not the cells have an antigen called the Rh factor.