| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.25 |
| Score | 0% | 65% |
Cirrus clouds are thin, wispy clouds composed of ice crystals. At what elevation to cirrus clouds form?
low-altitude |
|
ground level |
|
high-altitude |
|
mid-altitude |
Cirrus clouds are thin, wispy high-altitude clouds composed of ice crystals that originate from the freezing of supercooled water droplets. Cirrus clouds generally occur in fair weather and point in the direction of air movement at their elevation.
Which of the following describes how a person's genes express themselves in physical characteristics?
chromotype |
|
phenotype |
|
genotype |
|
DNA |
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?
stomach |
|
small intestine |
|
esophagus |
|
large intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Which of the following is the smallest component of an element that still retains the properties of the element?
element |
|
neutron |
|
atom |
|
molecule |
An atom is the smallest component of an element that still retains the properties of the element.
In the heart, the __________ artery and vein manage blood flow to the lungs.
aorta |
|
atrial |
|
capillary |
|
pulmonary |
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.