| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
decrease, stabilize |
|
stabilize, raise |
|
raise, decrease |
|
decrease, raise |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
-40°F is how many °C?
\({40 \over 9}\) |
|
\(-{40 \over 9}\) |
|
-8 |
|
-40 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (-40 - 32)\)
\(C° = {5 \over 9} (-72) = {{-72 \times 5} \over 9}\)
\(C° = {-360 \over 9}\)
\(C° = -40\)
Respiration is the process by which __________ absorb oxygen and eliminate carbon dioxide.
capillaries |
|
blood cells |
|
diaphragms |
|
bronchioles |
The respiratory system manages respiration which is the process by which blood cells absorb oxygen and eliminate carbon dioxide.
The envelope of gases surrounding the planet is called the:
hydrosphere |
|
lithosphere |
|
geosphere |
|
atmosphere |
The biosphere is the global ecological system integrating all living beings and their relationships. This includes their interactions with the lithosphere (the rigid outer part of the earth, consisting of the crust and upper mantle), hydrosphere (all surface water), and atmosphere (the envelope of gases surrounding the planet).
In the pancreas, lipase converts fat to:
amino acids |
|
glycerol and fatty acids |
|
simple sugars |
|
complex carbohydrates |
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.