| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
What is the body's largest artery?
capillary |
|
vena cava |
|
aorta |
|
arteriole |
The aorta is the body's largest artery and receives blood from the pulmonary vein via the left ventricle. From there, blood is circulated through the rest of the body through smaller arteries called arterioles that branch out from the heart. Finally, blood is delivered to bodily tissues through capillaries.
Which of these is matter than cannot be separated into different types of matter by ordinary chemical methods?
element |
|
compound |
|
atom |
|
molecule |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.
Which of these digestive enzymes is not produced by the pancreas?
trypsin |
|
lipase |
|
gastric acid |
|
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.
Materials like metals that transfer heat efficiently are called:
refractors |
|
insulators |
|
reflectors |
|
conductors |
Heat is always transferred from warmer to cooler environments and conduction is the simplest way this transfer can occur. It is accomplished through direct contact between materials and materials like metals that transfer heat efficiently are called conductors while those that conduct heat poorly, such as plastic, are called insulators.
212°F is how many °C?
-100 |
|
100 |
|
\(135 {5 \over 9}\) |
|
0 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (212 - 32)\)
\(C° = {5 \over 9} (180) = {{180 \times 5} \over 9}\)
\(C° = {900 \over 9}\)
\(C° = 100\)