Pole cells are responsible for forming what structures in an adult organism?
A. liver cells
B. gametes
C. nerve cells
D. hematopoietic stem cells
B
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Which of the following is a permanent post-translational covalent modification?
A. attachment of a sugar B. disulfide bond formation C. proteolytic processing D. attachment of a lipid E. All of the choices are correct.
Three college students purchased a bag of fresh-picked, unripened apples from a nearby orchard. Keeping the apples in a paper bag for several days, the apples ripened. This was a response to the plant hormone
A. auxin. B. ethylene. C. gibberellin. D. jasmonic acid. E. abscisic acid.
The primary function of each of the following is for adhesion of a cell to another cell or the extracellular matrix except
A) desmosomes. B) hemidesmosomes. C) plaques. D) connexins. E) cadherins.
The primary mechanism that redistributes the flow of blood from one part of the body to another is changes in the
A. rate at which the heart beats. B. rate at which blood is removed from an area. C. strength of the heartbeat. D. diameter of arterioles.