In early embryonic development the cells start to differentiate based on ...

a. hormones secreted by the uterus

b. amniotic fluid produced by the placenta

c. their location, or layer

d. chemicals secreted by the blastocyst

What is the concentration of a suspension that grew 27 colonies on a plate made with 0.1ml from a culture with a dilution of 1:10,000?

How do you think your reaction to the bug would change if the myelin on your neurons was damaged or destroyed?

What are two specialized structures of an apple tree that increase the chances that it will reproduce and have offspring that survive?

Mary has type 2 diabetes. What can you deduce about Mary from this information? Mary doesn't get regular exercise. Mary does not eat a balanced diet. Mary's body is unable to use insulin properly. Mary's body is unable to use glucose properly.

What materials does dna polymerase require in order to synthesize a complete strand of dna?

Which kind of biologist would most likely use satellite technology?

What is the complementary base of adenine in DNA? guanine cytosine thymine uracil

Fish in a marine environment must maintain a relatively constant ion concentration in their tissues and blood. How do the chloride cells in the gills aid fish in the removal of excess ions? A.

Name three groups of plastic sedimentary rocks

A section of DNA that carries enough information to make a single protein is called a (an) A. codon. B. enzyme. C. gene. D. intron.