| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.01 |
| Score | 0% | 60% |
Which of the following members of the food chain are most alike?
producers and tertiary consumers |
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scavengers and decomposers |
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primary consumers and omnivores |
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herbivores and autotrophs |
Like decomposers, scavengers also break down the dead bodies of plants and animals into simple nutrients. The difference is that scavengers operate on much larger refuse and dead animals (carrion). Decomposers then consume the much smaller particles left over by the scavengers.
Which of these is matter than cannot be separated into different types of matter by ordinary chemical methods?
molecule |
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atom |
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element |
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compound |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.
Which of the following is the smallest component of an element that still retains the properties of the element?
atom |
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neutron |
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element |
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molecule |
An atom is the smallest component of an element that still retains the properties of the element.
Neurons are part of the __________ nervous system.
peripheral |
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central |
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somatic |
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autonomic |
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.
In cell biology, the primary difference between anaerobic and aerobic respiration is that aerobic respiration requires:
oxygen |
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mitochondria |
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water |
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sugar |
Some plant cells produce their own energy through photosynthesis which is the process by which sunlight, carbon dioxide, and water react to make sugar and oxygen. Animal cells cannot produce their own energy and, instead, generate energy when mitochondria consume outside sugar and oxygen through aerobic respiration.