which of the following best summarizes the role of DNA in protein synthesis?
a) the anticodons of DNA bind directly to amino acids, allowing them to be linked into a peptide chain
b) DNA guides the folding of a new protein after it has been assembled by RNA
c) DNA acts as an enzyme to catalyze the conversion of mRNA into protein
d) DNA contains the genetic code that determines the amino acid sequences of proteins
b) the genetic code
d) DNA contains the genetic code that determines the amino acid sequences of proteins
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The myometrium of the uterus is composed of
A. smooth muscle. B. skeletal muscle. C. loose connective tissue. D. mucous membrane. E. fibrous connective tissue.
A tracing of the electrical activity of the heart, monitored by electrodes placed on the skin, is called a(n) ________.
Fill in the blank(s) with the appropriate word(s).
Internal structures of a cell that carry out specialized metabolic tasks are called ________.
A. cytoskeletal elements B. organelles C. enzymes D. ribosomes
Which muscle tissue(s) can contract without the need for nervous stimulation?
A. Skeletal, smooth, and cardiac muscle B. Cardiac muscle only C. Smooth and cardiac muscle D. Skeletal muscle only E. Smooth muscle only