The excretory system rids your body of solid waste.

True

False

How does selection affect the genetic variation in the population?

How do protozoans with pseudopods eat?

Which cell has fibre-like structure

The endosymbiotic theory explains eukaryotic evolution. a. True b. False

In gel electrophoresis why does the DNA move toward the bottom of the wall of gel? A. DNA is negatively charged. B. DNA is positively charged. C. DNA is extremely heavy. D. DNA is less dense than air.

What characteristic is shared by birds, salamanders, and sharks?

What economic factor promoted the growth of city states in nothern italy

Alveoli, capillaries, and glomeruli capsules are all lined with simple squamous epithelium. What function is shared by these structures?

Which of the following is a way that new DNA can be introduced to bacteria?

Why do you think it is important to cover your mouth when you cough?