Our current view of membrane structure is based on the fluid mosaic model, proposed by ____ in
1972.
a. H. Davson and J. Danielli
b. I. Langmuir
c. C. Overton
d. S. Singer and G. Nicolson
e. E. Gorter and F. Grendel
D
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After the zygote has surpassed 100 cells, during cleavage, it becomes known as which of the following?
a. morula b. gastrula c. blastula d. flatula
The pancreas is an organ that regulates blood glucose levels. When glucose levels rise above normal, the pancreas
releases insulin to lower blood glucose levels. This is an example of ____. a. evolution b. mutation c. immunity d. homeostasis e. variability
To maintain lysogeny in lambda, which of the following needs to occur?
A) Binding of repressor protein to OL B) Binding of repressor protein to OR C) Inactivation of PL D) Inactivation of PR E) All of these
Cows can derive nutrients from cellulose because
A) they produce the enzymes that break down cellulose. B) they chew their food so thoroughly that cellulose fibers are broken down. C) their intestinal tract contains cellulose-hydrolyzing microorganisms. D) they convert cellulose into starch, which is easily broken down in the intestinal tract.