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.

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin

Explain the process that creates the heat of the sun?

Which of the following observations darwin shape his concept of descent with modification? a) species diversity declines farther from the equator.b) fewer species live on islands than on the nearest continents.c) birds can be found on islands located farther from the mainland than the birdsê¹ maximum nonstop flightdistance.d) south american temperate plants are more similar to the tropical plants of south america than to thetemperate plants of europe.e) earthquakes reshape life by causing mass extinctions.