During DNA replication?
a. only one strand of the parent DNA is copied.
b. neither strand of parent DNA appears in daughter DNA.
c. DNA replication is considered conservative.
d. the strands of parent DNA are unwound.
e. complementary nucleotides are positioned by the enzyme helicase.
Answer: d. the strands of parent DNA are unwound.
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Which of the major tissue types has shortening of cells (i.e., contraction) as its major function?
A. nervous B. muscular C. epithelial D. connective E. All of the choices are correct
What is the key concept addressed by the question?
What will be an ideal response?
Most bacteria are
a. symbionts. b. heterotrophs. c. chemoautotrophs. d. photoautotrophs. e. microbial predators.
Carl Woese's evolutionary studies that led him to propose the three domain taxonomic system compared nucleotide sequence present in:
A) the nuclei of eukaryotic cells B) 16S rRNA genes C) cyanobacteria D) thermophiles E) DNA polymerase genes