| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.59 |
| Score | 0% | 72% |
The __________ is a system of muscles that allows breathing.
diaphragm |
|
bronchioles |
|
pulmonary |
|
trachea |
The diaphragm is a system of muscles that allows breathing. During inhalation, the diaphragm expands and air rushes in to fill the space created. Then, during exhalation, the diaphragm contracts and forces the air back out.
Water freezing or boiling is an example of which of the following?
sublimation |
|
heating |
|
cooling |
|
phase transition |
A substance undergoes a phase transition when it moves from one state of matter to another, for example, when water freezes or boils.
In cell biology, cytokinesis results in two separate:
chromatids |
|
nuclei |
|
chromosomes |
|
cells |
During cell division, the cytokinesis phase occurs when cytoplasm and cell membranes complete their separation resulting in two separate cells.
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
decrease, stabilize |
|
stabilize, raise |
|
decrease, raise |
|
raise, decrease |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
The small intestine utilizes enzymes produced where?
all of these are correct |
|
pancreas |
|
small intestine |
|
liver |
The small intestine is where most digestion takes place. As food travels along the small intestine it gets broken down completely by enzymes secreted from the walls. These enzymes are produced in the small intestine as well as in the pancreas and liver. After the enzymes break down the food, the resulting substances are then absorbed into the blood via capillaries in the small intestine walls.