| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
An element in the physical state of __________ maintains neither a constant volume nor a constant shape.
liquid |
|
solid |
|
gas |
|
plasma |
The gaseous state occurs at a higher temperature range than the solid and liquid states of the same substance. In this state, molecules flow very freely around each other and will spread out as far as they're able. Gases maintain neither a constant volume nor a constant shape.
Which of the following members of the food chain are most alike?
producers and tertiary consumers |
|
herbivores and autotrophs |
|
scavengers and decomposers |
|
primary consumers and omnivores |
Like decomposers, scavengers also break down the dead bodies of plants and animals into simple nutrients. The difference is that scavengers operate on much larger refuse and dead animals (carrion). Decomposers then consume the much smaller particles left over by the scavengers.
Which of the following represents the largest value?
1 mL |
|
1 kL |
|
1 cL |
|
1 ML |
Mega (M) is 106, kilo (k) is 103, centi (c) is 10-2, milli (m) is 10-3 so 1 ML represents the largest value.
Cellular fermentation takes place:
in plant cells |
|
aerobically |
|
in the presence of oxygen |
|
anaerobically |
If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.
Water freezing or boiling is an example of which of the following?
cooling |
|
heating |
|
sublimation |
|
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.