The RNA that brings proteins to the ribosome is called:
a. ribosomal RNA.
b. transfer RNA.
c. messenger RNA.
d. RNA.
e. helper RNA.
B
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The general purpose of the synaptonemal complex is to __________
A. provide a link between homologous chromosomes in meiosis. B. enable the reformation of the cell wall during cytokinesis. C. separate the sister chromatids during anaphase. D. independently assort the chromosomes during metaphase of meiosis. E. None of the answers are correct.
Purple flower (A) is dominant over white flower (a), and tall stem (B) is dominant over short stem (b). The Punnett square
represents a cross between two dihybrids (AaBb ? AaBb). In the figure above, how many plants would have purple flowers and tall stems?
a. 1 b. 3 c. 5 d. 9 e. 16
Although most hormones work at sites distant from where they are secreted, some work locally, such
as a. follicle stimulating hormone. b. prostaglandin. c. luteinizing hormone. d. thyroid stimulating hormone. e. adrenocorticotropic hormone
Which event occurs during the elongation stage?
A. tRNA transfers mRNA to the ribosomes. B. Free amino acids bind to the mRNA binding site. C. Anticodons bind to complementary codons. D. A stop codon enters the ribosome. E. rRNA catalyzes the formation of peptide bonds.