| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.42 |
| Score | 0% | 68% |
__________ and __________ pair to strengthen bones.
iron, calcium |
|
vitamin D, magnesium |
|
calcium, vitamin A |
|
vitamin D, calcium |
Vitamin D helps calcium strengthen bones while also aiding muscle, nerve, and immune system function.
Changes to an object's speed or direction of motion are caused by which of the following?
work |
|
kinetic energy |
|
power |
|
a force |
Force is applied to change an object's speed or direction of motion.
Herbivores are __________ that subsist on producers like plants and fungus.
scavengers |
|
tertiary consumers |
|
primary consumers |
|
secondary consumers |
Primary consumers (herbivores) subsist on producers like plants and fungus. Examples are grasshoppers, cows, and plankton.
In cell biology, where does DNA replication take place?
cytoplasm |
|
Golgi apparatus |
|
nucleus |
|
mitochondria |
The cell nucleus contains the genetic material of the cell and is where DNA replication takes place.
In the heart, the __________ artery and vein manage blood flow to the lungs.
aorta |
|
capillary |
|
pulmonary |
|
atrial |
The two largest veins in the body, the venae cavae, pass blood to the right ventricle which pumps the blood to the lungs through the pulmonary artery. Blood picks up oxygen in the lungs and returns it to the left atrium via the pulmonary vein.