| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.28 |
| Score | 0% | 66% |
What part of the food chain serves only as food for other organisms?
secondary consumers |
|
decomposers |
|
producers |
|
primary consumers |
Producers (autotrophs) serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis
Which of these parts of digestion takes place in the mouth?
breaking down proteins |
|
breaking down starches |
|
absorbing nutrients |
|
breaking down fats |
Digestion begins in the mouth where the teeth and tongue break down food mechanically through chewing and saliva, via the enzyme salivary amylase, starts to break starches down chemically. From the mouth, food travels down the esophagus where contractions push the food into the stomach.
A __________ is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound.
molecule |
|
ion |
|
neutron |
|
isotope |
A molecule is the smallest multi-atom particle of an element or compound that can exist and still retain the characteristics of the element or compound. The molecules of elements consist of two or more similar atoms, the molecules of compounds consist of two or more different atoms.
Food is mixed with gastric acid and pepsin in the __________ to help break down protein.
stomach |
|
large intestine |
|
small intestine |
|
mouth |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Which of the following temperatures is least like the others?
0K |
|
32°F |
|
absolute zero |
|
-273°C |
Absolute zero is the coldest possible temperature in the universe. In the Kelvin scale, absolute zero is 0K and in the Celsius scale it is -273°C.