The color started up the flap and started to dye the filter paper from the center

outward. It is called diffusion.

Organism A shares 50% of its DNA sequences with organism B, while organisms B and C share 90% of their DNA sequences. What can be concluded from this?

The tundra ecosystem of Alaska is known as a "cold desert." It receives very little precipitation, about four inches annually. However, it is rich in wetlands due to permafrost, which traps moisture close to the surface.

Rough endoplasmic reticulum is the area in a cell where ___ are synthesized.

living matter is at least sixty percent water. it makes sense, then, that cell membranes are made of phospholipids because

A woman with blood type A has a child with blood type O. She accuses a man who is heterozygous for blood type B of being the father.

As various vertebrate groups evolved, the structure of the heart changed. Which of the following describes the heartsame of birds and mammals?

Explain how the hormone reaches the target gland.

Compare the movement of nematodes (vinegar eel) with that of annelid worms (earthworm) relating these different kinds of movement to the arrangement of muscle layers in these animals.

List the steps in meiosis 1 in order and meiosis 2 in order

How does angiogenesis effects the body