Which of the following is a source of genetic variation within a species?

A) Cloning

B) Mutation

C) Selection Breeding

D) Natural Selection

What is homeostasis and what is an example of it?

As hominids evolved, their eyes increased in size and became more forward facing. Which of the following can be inferred from this observation? As hominids evolved, their eyes increased in size and became more forward facing.

A solution with a 0.9% concentration of salt is isotonic to red blood cells so the cells stay the same. Cells shrivel in hypertonic solutions and swell and burst in hypotonic solutions.

As a group, living things must be able to do all of the following except A. remain without change over time. B. respond to their environment. C. obtain and use energy. D. grow and develop.

Which describes one of the ways proteins behave in facilitated diffusion? A) They change membranes. B) They use ATP. C) They change shape. D) They create channels ...

The chemical basis of blood group specificity resides in the carbohydrates displayed on the surface of red blood cells. Carbohydrates have the potential for great structural diversity.

What is the clinical significance of using media and other biochemical test to distinguish between similar and dissimilar bacteria?

Snakes and worms have no legs and share a similar tube-like body structure. Describe how you could determine how closely related these two types of organisms are.

Which domain (s) include species whose cells have cell walls? A. Archaea B. Bacteria C. Archaea and Bacteria D. Archaea, Bacteria, and Eukarya

In birds, sex is determined by a ZW chromosome scheme. Males are ZZ and females are ZW. A recessive lethal allele that causes death of the embryo is sometimes present on the Z chromosome in pigeons.