18. which of the following statements does not accurately describe stem cells?
a. adult stem cells are multipotent and can differentiate into many types of cells.
b. the use of stem cells may allow scientists to use undifferentiated cells to repair or replace bad cells.
c. the use of stem cells is without any objections since it can be used in therapies to humans.
d. embryonic stem cells make up the inner cell mass of a blastocyst.

Read the following scenario to answer the following question. in some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." male ligers are sterile but some female ligers are fertile. in the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. applying the biological species concept, the sterility of ligers reveals that a. lions are probably a subspecies of tigers b. tigers and lions are the same species c. a new species called "ligers" is forming d. tigers and lions are separate species

What initially causes a nerve impulse? release of enzymes out of the neuron movement of chemicals into the dendrites of the neuron pathogens attacking the dendrites of the neuron red blood cells bathing the neuron

Ineed some everybody. the production of cells during mitosis into specialized function is called: recombination or differentiation