If angiosperms never existed, how would the environmental conditions of today's rain- forest regions be different? Select all correct choices. These regions would be:
A. wetter.
B. drier.
C. colder.
D. hotter.
E. unchanged.
B,D
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Which of the following best describes "spongy bone"?
A) very similar to compact bone but more flexible B) soft bone tissue C) bone tissue found only in the skull D) contains blood-cell-producing red marrow
A mutation expressed only under certain conditions is
A) germinal. B) de novo. C) conditional. D) deleterious
Genetic information in DNA and RNA is stored as a sequence of three nucleotide bases. On DNA a group of three nucleotides is called a _____, while on the complementary strand of mRNA, this sequence is called a ____ .
a. genome / proteome b. intron / exon c. base triplet / codon d. codon / anticodon e. base triplet / anticodon
When processing a culture swab in the diagnostic laboratory the microbiologist should:
a. inoculate the media prior to making the direct smear. b. roll the swab back and forth on the slide making sure to transfer organisms. c. prepare the smear by rubbing the slide with one side of the swab and utilize the opposite slide to inoculate media. d. cancel the direct Gram stain and only set up the media. Request a second swab for the direct smear.