| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.73 |
| Score | 0% | 75% |
As part of digestion, the liver produces bile which breaks down:
starches |
|
protein |
|
sugars |
|
fat |
The liver produces bile which emulsifies (separates) fat.
The number system most used in science is the:
English system |
|
British system |
|
metric system |
|
American system |
The metric system is a number system that designates one base unit for each type of measurement. For example, the base unit for length is the meter and the base unit for mass is the gram.
The ozone layer is in which of Earth's atmospheric layers?
thermosphere |
|
mesosphere |
|
troposphere |
|
stratosphere |
The stratosphere is just above the troposphere and is stratified in temperature with warmer layers higher and cooler layers closer to Earth. This increase in temperature is a result of absorption of the Sun's radiation by the ozone layer.
Saturated fats can __________ LDL ("bad") cholesterol while unsaturated fats can __________ it.
raise, decrease |
|
decrease, raise |
|
decrease, stabilize |
|
stabilize, raise |
Saturated fats can raise LDL ("bad") cholesterol while unsaturated fats can decrease it.
Heat is always transferred from __________ to __________ environments.
warmer, cooler |
|
cooler, warmer |
|
dense, empty |
|
empty, dense |
Heat is always transferred from warmer to cooler environments and conduction is the simplest way this transfer can occur. It is accomplished through direct contact between materials and materials like metals that transfer heat efficiently are called conductors while those that conduct heat poorly, such as plastic, are called insulators.