Which one of the following is not a direct method of disease transmission
A. Fomites
B. Particles of mucus expelled from the respiratory tract
C. Contact with feces
D. Hand-shaking
E. Intercourse
Answer: A. Fomites
Biology & Microbiology
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The yolk of an animal egg has what type of analog in angiosperms?
A) endosperm B) carpels C) fruit D) seed coat
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Peptide bonds form between ________
A) amino acids B) an mRNA codon and a tRNA anticodon C) a tRNA and the amino acid it is carrying D) an mRNA transcript and the small ribosomal subunit
Biology & Microbiology
Earth has supported life for approximately
A. 20 billion years. B. 3.8 - 3.7 billion years. C. 1.5 billion years. D. 700 - 800 million years.
Biology & Microbiology
Which cellular structure is the "shipping center", responsible for packaging materials with the cell?
a) Golgi apparatus b) chloroplasts c) ribosomes d) mitochondria
Biology & Microbiology