A codon consists of _____ bases and specifies which _____ will be inserted into the polypeptide chain.
Fill in the blank(s) with the appropriate word(s).
Answer: three ... amino acid
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The ENCODE project has shown that much of human genomic DNA:
A. encodes protein. B. forms telomere and centromeres. C. regulates the expression of protein coding genes. D. is simple-sequence repeats. E. is not transcribed.
How do antigen-presenting cells (APCs) acquire the epitopes for presentation?
a. direct infection of the APC b. exocytosis or secretion c. phagocytosis or endocytosis d. diffusion
Which of the following represents the possible genotype(s) resulting from a cross between an
individual homozygous for black hair (BB) and an individual homozygous for blonde hair (bb)? a. BB and Bb b. BB, Bb, and bb c. BB only d. Bb only e. bb only
Circulatory systems in molluscs
A) are open in all species of molluscs. B) are closed in all species of molluscs. C) are open in species of large-sized molluscs and are closed in species of small-sized molluscs. D) are open in species of small-sized molluscs and are closed in species of large-sized molluscs. E) are open or closed without regard to body size.