| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.30 |
| Score | 0% | 66% |
In fermentation, what replaces oxygen in anaerobic respiration?
ascorbic acid or peptides |
|
water |
|
lactic acid or alcohol |
|
starches |
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.
Blood is created in:
the heart |
|
the liver |
|
bone marrow |
|
red blood cells |
Blood is created in bone marrow and is made up of cells suspended in liquid plasma. Red blood cells carry oxygen, white blood cells fight infection, and platelets are cell fragments that allow blood to clot.
Which of the following is not a base unit in the metric system?
gram |
|
liter |
|
degree Fahrenheit |
|
meter |
The Fahrenheit scale is used for measuring temperature in the British system. The metric system uses the Celsius scale.
In the metric system, what prefix represents 103?
centi |
|
kilo |
|
mega |
|
milli |
Kilo is the metric system prefix for 103.
The coldest point in the Earth's atmosphere is reached in which atmospheric layer?
stratosphere |
|
mesosphere |
|
troposphere |
|
thermosphere |
In the mesosphere, temperature again drops as altitude increases until the coldest point in the Earth's atmosphere, the mesopause, is reached where temperatures fall to −225 °F (−143 °C).