| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.15 |
| Score | 0% | 63% |
Blood pressure is generally highest in which of the following?
heart |
|
capillaries |
|
veins |
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arteries |
Arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood.
I biome is made up of naturally occurring flora and fauna. Fauna is which of the following?
plants |
|
habitats |
|
minerals |
|
animals |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
Which of the following is not true of light waves?
can travel through a vacuum |
|
are mechanical waves |
|
travel faster than sound waves |
|
are electromagnetic waves |
Unlike mechanical sound waves that require a physical medium for propagation, light waves are electromagnetic and can travel through empty space. Light waves are also much faster, travelling at 186,000 m/s vs. 343 m/s for sound waves.
In cell biology, cytokinesis results in two separate:
chromosomes |
|
nuclei |
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chromatids |
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cells |
During cell division, the cytokinesis phase occurs when cytoplasm and cell membranes complete their separation resulting in two separate cells.
A dominant trait will be expressed when paired with:
a chromosome |
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a recessive trait |
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a gene |
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a dominant trait |
The traits represented by genes are inherited independently of each other (one from the male and one from the female gamete) and a trait can be dominant or recessive. A dominant trait will be expressed when paired with a recessive trait while two copies of a recessive trait (one from each parent) must be present for the recessive trait to be expressed.