| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.20 |
| Score | 0% | 64% |
In the heart, blood flows from the right __________ to the lungs then back to the heart via the left __________.
atrium, ventricle |
|
ventricle, ventricle |
|
atrium, atrium |
|
ventricle, atrium |
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 these digestive enzymes is not produced by the pancreas?
trypsin |
|
gastric acid |
|
lipase |
|
pancreatic amylase |
The acids produced by the pancreas contain several enzymes that aid in digestion. Lipase converts fat to glycerol and fatty acids. Pancreatic amylase breaks down complex carbohydrates into simple sugars. Trypsin converts polypeptides (the building blocks of protein) into amino acids.
Changes to an object's speed or direction of motion are caused by which of the following?
kinetic energy |
|
power |
|
a force |
|
work |
Force is applied to change an object's speed or direction of motion.
DNA is encoded through a combination of which of the following?
gametes |
|
helix |
|
nucleotides |
|
genes |
Deoxyribonucleic acid (DNA) is the molecule that contains genetic information. DNA is encoded through a combination of nucleotides that bind together in a specific double helix pattern.
The heat from the Sun traveling to Earth is an example of which of the following?
conduction |
|
convection |
|
electricity |
|
radiation |
Radiation occurs when electromagnetic waves transmit heat. An example is the heat from the Sun as it travels to Earth.