| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.88 |
| Score | 0% | 58% |
Which of these is matter than cannot be separated into different types of matter by ordinary chemical methods?
compound |
|
atom |
|
element |
|
molecule |
An element is matter than cannot be separated into different types of matter by ordinary chemical methods.
Examples of primary consumers include:
cows |
|
fish |
|
rats |
|
all of these |
Primary consumers (herbivores) subsist on producers like plants and fungus. Examples are grasshoppers, cows, and plankton.
-40°F is how many °C?
-40 |
|
-8 |
|
\({40 \over 9}\) |
|
\(-{40 \over 9}\) |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (-40 - 32)\)
\(C° = {5 \over 9} (-72) = {{-72 \times 5} \over 9}\)
\(C° = {-360 \over 9}\)
\(C° = -40\)
Most digestion takes place where?
small intestine |
|
mouth |
|
large intestine |
|
stomach |
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.
The __________ is a system of muscles that allows breathing.
pulmonary |
|
trachea |
|
bronchioles |
|
diaphragm |
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.