Which anterior pituitary hormone stimulates and maintains milk production?
a. FSH
b. LH
c. prolactin
d. ACTH
e. TSH
ANSWER: c
You might also like to view...
As a plant cell grows and matures, additional layers are added to the cell wall to construct the more rigid ____,
a. middle lamella b. secondary cell wall c. primary cell wall d. plasma membrane e. central vacuole
Which of the following results from mitosis?
a. a pair of unidentical twins b. a group of rooted plant cuttings from multiple plants c. the cells produced by the sexual reproduction of a single-celled organism d. two new descendent cells each with a full complement of identical DNA e. completely repaired DNA from damaged parental cells
A method of contraception that prevents the release of the oocyte from the ovary is a(n)
A) hormonal method. B) barrier method. C) spermicide method. D) oogenic method.
RNA viruses code for polymerases that do not proofread replicated viral chromosomes. Consequently, RNA viruses experience extremely high mutation rates
Whereas RNA viruses have mutation rates of about 1/10,000 base pairs per replication, their human hosts show mutation rates that by the same measure are at least 1 million times lower. Speculate on differences between vertebrates and viruses that led to the evolution of such widely diverging mutation rates. a. DNA polymerases have a built-in proofreading function. b. RNA viruses are so simple that virtually all mutations are neutral or adaptive. c. Vertebrates compensate for low individual mutation rates via having large population sizes. d. There is extensive pleiotropy in vertebrate genomes.