| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.29 |
| Score | 0% | 66% |
Which of the following describes how a person's genes express themselves in physical characteristics?
DNA |
|
phenotype |
|
genotype |
|
chromotype |
A person's genotype is their genetic makeup and includes both dominant and recessive alleles. Phenotype is how the genes express themselves in physical characteristics.
In cell biology, where does DNA replication take place?
Golgi apparatus |
|
mitochondria |
|
nucleus |
|
cytoplasm |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
Earth's breathable air is held in which atmospheric layer?
thermosphere |
|
stratosphere |
|
mesosphere |
|
troposphere |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.
Examples of tertiary consumers include:
cows |
|
fish |
|
sharks |
|
chickens |
Tertiary consumers eat primary consumers and secondary consumers and are typically carnivorous predators. Tertiary consumers may also be omnivores. Examples include wolves, sharks, and human beings.
Which of Earth's layers has weather?
stratosphere |
|
troposphere |
|
thermosphere |
|
mesosphere |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.