| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.23 |
| Score | 0% | 65% |
The ozone layer is in which of Earth's atmospheric layers?
troposphere |
|
mesosphere |
|
stratosphere |
|
thermosphere |
The stratosphere is just above the troposphere and is stratified in temperature with warmer layers higher and cooler layers closer to Earth. This increase in temperature is a result of absorption of the Sun's radiation by the ozone layer.
In the heart, blood flows from the right __________ to the lungs then back to the heart via the left __________.
atrium, atrium |
|
ventricle, ventricle |
|
ventricle, atrium |
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atrium, ventricle |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.
Which of the following is not a method of heat transfer?
radiation |
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reflection |
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conduction |
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convection |
Heat is always transferred from warmer to cooler environments through conduction, convection, or radiation.
Which of the following is the narrowest classification of life?
family |
|
species |
|
domain |
|
genus |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.
In cell biology, where does DNA replication take place?
Golgi apparatus |
|
nucleus |
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cytoplasm |
|
mitochondria |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.