| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.94 |
| Score | 0% | 79% |
A subatomic particle found in the nucleus of an atom. It carries no electric charge. This desribes which of the following?
proton |
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electron |
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atom |
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neutron |
A neutron is a subatomic particle found in the nucleus of an atom. It is neutral as it carries no electric charge.
The number system most used in science is the:
metric system |
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American system |
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English system |
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British system |
The metric system is a number system that designates one base unit for each type of measurement. For example, the base unit for length is the meter and the base unit for mass is the gram.
When compared to eukaryotic cells, prokaryotic cells are:
similarly complex |
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less complex |
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none of these |
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more 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.
Materials like metals that transfer heat efficiently are called:
refractors |
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insulators |
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reflectors |
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conductors |
Heat is always transferred from warmer to cooler environments and conduction is the simplest way this transfer can occur. It is accomplished through direct contact between materials and materials like metals that transfer heat efficiently are called conductors while those that conduct heat poorly, such as plastic, are called insulators.
A biological community of interacting organisms and their physical environment is known as:
ecosystem |
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population |
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biome |
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community |
An ecosystem is a biological community of interacting organisms and their physical environment. This includes both the biotic (living) and abiotic (non-living).