| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
The respiratory and circulatory systems are similar in that they:
transport nutrients |
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transport oxygen |
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deoxygenate blood |
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add carbon dioxide |
Like the respiratory system, the circulatory system serves to transport oxygen throughout the body while removing carbon dioxide. In addition, the circulatory system transports nutrients from the digestive system.
Changes to an object's speed or direction of motion are caused by which of the following?
a force |
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kinetic energy |
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work |
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power |
Force is applied to change an object's speed or direction of motion.
When compared to eukaryotic cells, prokaryotic cells are:
less complex |
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none of these |
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similarly complex |
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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.
During digestion, the kidneys filter substances from the blood. Which of the following is not filtered by the kidneys?
water |
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salt |
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fats |
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minerals |
Chemical waste like excess water, minerals, and salt are filtered from the blood by the kidneys and secreted into the urine. Urine is transported from the kidneys to the bladder through ureters.
Which of the following is true about species groups?
a community is made up of a group of populations |
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an ecosystem is a biological population |
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a population is made up of a group of communities |
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a biome is a made up of a group of biospheres |
A population is a group of organisms of the same species who live in the same area at the same time. A community is a group of populations living and interacting with each other in an area.