| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.92 |
| Score | 0% | 58% |
__________ is caused by a lack of Vitamin C.
anemia |
|
shingles |
|
scurvy |
|
diabetes |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
Which of the following is related to the Cambrian Explosion?
extinction of dinosaurs |
|
carbon dating |
|
fossil record |
|
first civilizations |
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.
In the food chain, omnivores may be which of the following?
secondary or tertiary consumers |
|
primary or tertiary consumers |
|
secondary consumers or scavengers |
|
primary or secondary consumers |
Secondary or tertiary consumers may be omnivores.
In the pancreas, lipase converts fat to:
complex carbohydrates |
|
simple sugars |
|
glycerol and fatty acids |
|
amino acids |
The acids produced by the pancreas contain several enzymes that aid in digestion. Lipase converts fat to glycerol and fatty acids. Pancreatic amylase breaks down complex carbohydrates into simple sugars. Trypsin converts polypeptides (the building blocks of protein) into amino acids.
The fossil record is a product of which period of Earth's history?
Cretaceous |
|
Cenozoic |
|
Jurassic |
|
Cambrian |
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.