| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
In the food chain, consumers are classified as which of the following?
primary |
|
all of these |
|
secondary |
|
tertiary |
Most animals consume other organisms to survive. Consumers (heterotrophs) are divided into three types, primary, secondary, and tertiary, based on their place in the food chain.
Earth's breathable air is held in which atmospheric layer?
troposphere |
|
stratosphere |
|
mesosphere |
|
thermosphere |
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.
Which of the following describes how a person's genes express themselves in physical characteristics?
phenotype |
|
DNA |
|
chromotype |
|
genotype |
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.
During digestion, after proteins are broken down where does the undigested food go next?
esophagus |
|
small intestine |
|
stomach |
|
large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Which of the following is the correct order for types of radiation from longest to shortest wavelength?
radio waves → visible light → gamma rays |
|
visible light → ultraviolet light → radio waves |
|
infrared waves → microwaves → ultraviolet light |
|
microwaves → radio waves → visible light |
The electromagnetic spectrum covers all possible wavelengths and frequencies of radiation. From lowest frequency (longest wavelength) to highest frequency (shortest wavelength) radiation: radio waves → microwaves → infrared waves → visible light → ultraviolet light → X-rays → gamma rays.