Which of the following is true of embryonic stem cells but not of adult stem cells?
a) they can differentiate into many cell types.
b) they make up the majority of cells of the tissue from which they are derived.
c) they can continue to replicate for an indefinite period.
d) they can provide enormous amounts of information about the process of gene regulation.
e) one aim of using them is to provide cells for repair of diseased tissue.

2. Which of the following is true of embryonic stem cells?

a. They can differentiate into any type of cell in the body.

b. They are not found in adults.

c. They have great potential in research and development.

d. All of the above

ANSWER: d. All of the above

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms