Whooping cough is caused by ________.
A. Vibrio parahaemolyticus
B. Klebsiella pneumoniae
C. Bordetella pertussis
D. Yersinia pestis
Answer: C
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Viruses that cause infection resulting in alternating periods of activity with symptoms and inactivity without symptoms are called ________.
A. prions B. delta agents C. viroids D. oncogenic E. latent
Which codons specify the amino acid lysine (lys)?
1.UUU and UUC
2.AGA and AGG
3.AAU and AAC
4.AAA and AAG
Chordates can be characterized as having
A. bilateral symmetry. B. a notochord. C. a nerve cord. D. All of the choices are correct.
As electrons flow through complexes in the inner mitochondrial membrane, protons are moved from the matrix to the intermembrane space. This can make the pH
A) the same in the matrix and the inner membrane space. B) lower in the matrix. C) lower in both the matrix and the inner mitochondrial space. D) lower in the inner membrane space.