Enteroendocrine cells differ from goblet cells in which of the following ways?
(a) the direction of release of secretion
(b) the use of exocytosis for release of secretory product from the cell
(c) their presence in the small and large intestine
(d) their origin from a crypt stem cell
(e) secretion by a regulated pathway
Ans: (a) the direction of release of secretion
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Which organ system provides support, protection of soft tissue, mineral storage, and blood formation?
A) integumentary B) muscular C) skeletal D) nervous E) endocrine
The term "codon" refers to
A. a three-nucleotide sequence of DNA that codes for a protein. B. an amino acid that is coded for by three bases of DNA. C. a three-base sequence of mRNA. D. the part of a rRNA molecule where a new amino acid is added. E. the part of tRNA that is a triplet of bases that forms hydrogen bonds with complementary sequences.
Once they have developed surface receptors for a particular antigen, lymphocytes are said to be what?
A. Capped B. Self-tolerant C. Sensitized D. Immunoefficient E. Immunocompetent
Normally, the stroke volume of the right side of the heart is the same as the stroke volume of the left side of the heart
Indicate whether the statement is true or false