Which of the following groups of organisms is among the most abundant on Earth?
A. primates
B. insects
C. bacteria
D. protozoa
Ans: C. bacteria
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The human body contains approximately 200 major cell types. They look and function differently from one another because:
A. each has a slightly different genome. B. each expresses a different set of genes. C. each expresses the same set of genes, but in different orders at different times. D. each has a slightly different genome and each expresses a different set of genes.
Which of the following is a correct statement about pepsin?
A. It is manufactured by the pancreas. B. It helps stabilize fat-water emulsions. C. It splits maltose into monosaccharides. D. It is activated by the action of HCl on pepsinogen. E. It is denatured and rendered inactive in solutions with low pH.
A ________ consists of an organism's common ancestor and all of its descendents
a. phylogenetic group b. phenetic group c. monophyletic group d. gene pool
The opening of the uterus is referred to as the
A) endometrium. B) oviduct. C) cervix. D) fimbriae. E) clitoris.