Plant hormones called ________ form in roots and travel to shoots where they induce cell divisions in the apical meristem
a. abscisic acid (ABA)
b. auxins
c. gibberellins
d. cytokinins
d
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Epitopes or antigenic determinants
A. are parts of the antibody molecule. B. are T cell receptors. C. are a portion of antigen recognized by antibody. D. may be approximately 10-25 amino acids in length. E. are a portion of antigen recognized by antibody AND may be approximately 10-25 amino acids in length.
In RNAi, imperfect pairing of miRNA to target mRNA results in ____ while perfect pairing of miRNA to target
mRNA causes ____.
a. blocking transcription of the target mRNA; mRNA degradation b. blocking translation of the target mRNA; mRNA degradation c. recruitment of siRNA; blocking translation of the target mRNA d. mRNA degradation; recruitment of siRNA e. blocking transcription of the target mRNA; blocking translation of the target mRNA
Blood pumped from the left ventricle goes into the ____
a. vena cava b. aorta c. pulmonary artery d. right ventricle e. left atrium
Which of the following pairs is correctly matched?
a. middle lamella?cellulose b. integrins?receptors c. primary cell wall?pectin d. fibronectins?wood e. secondary cell wall?glycoproteins