| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.12 |
| Score | 0% | 62% |
Respiration is the process by which __________ absorb oxygen and eliminate carbon dioxide.
bronchioles |
|
blood cells |
|
diaphragms |
|
capillaries |
The respiratory system manages respiration which is the process by which blood cells absorb oxygen and eliminate carbon dioxide.
As part of digestion, the liver produces bile which breaks down:
starches |
|
protein |
|
fat |
|
sugars |
The liver produces bile which emulsifies (separates) fat.
In the metric system, what prefix represents 103?
centi |
|
mega |
|
kilo |
|
milli |
Kilo is the metric system prefix for 103.
What part of the brain is responsible for the major senses (thinking, hearing, seeing)?
cerebrum |
|
cerebellum |
|
medulla |
|
brainstem |
The cerebrum is the major part of the brain and is responsible for the main senses (thinking, hearing, seeing).
Which of the following is related to the Cambrian Explosion?
carbon dating |
|
fossil record |
|
first civilizations |
|
extinction of dinosaurs |
The Cambrian period is one of the most significant geological time periods. Lasting about 53 million years, it marked a dramatic burst of changes in life on Earth known as the Cambrian Explosion. It is from this period that the majority of the history of life on Earth, as documented by fossils, is found. Called the fossil record, the layering of these mineralized imprints of organisms preserved in sedementary rock have allowed geologists to build a historical record of plant and animal life on Earth.