What are the smallest projections of the small intestine wall?
a. microvilli
b. cilia
c. villi
d. brush border cells
e. duodena
ANSWER: a
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A specific marker for serotonin cells is
a. tyrosine hydroxylase. b. tryptophan hydroxylase. c. AAAD. d. MAO. e. COMT.
__________, the first vertebrates able to complete their life cycle on dry land, have water conserving
skin and kidneys, and amniote eggs. Fill in the blank(s) with the appropriate word(s).
Genomic imprinting is caused by epigenetic changes to DNA Indicate whether the statement is true or false
The chromosome theory of inheritance states that
A) genes are located on chromosomes. B) chromosomes replicate before cell division. C) alleles of a gene segregate during cell division. D) chromosomes consist of DNA. E) different chromosomes assort independently of one another.