When members of the normal microbiota of the human body become pathogenic and produce disease under certain circumstances, they are referred to as ________ pathogens.
A. conditional
B. occasional
C. opportunistic
D. partial
Answer: C
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A virus is most analogous to a(an) ____
a. bank robber b. carjacker c. embezzler d. attack dog e. drug dealer
Currently, the human population of the world
A. has reached its carrying capacity. B. is stable. C. is declining in much of the world. D. is increasing rapidly.
In 1964, Nirenberg and Leder used the triplet binding assay to determine specific codon assignments. A complex of which of the following components was trapped in the nitrocellulose filter?
A) sense and antisense strands of DNA B) charged tRNA, RNA triplet, and ribosome C) ribosomes and DNA D) uncharged tRNAs and ribosomes E) free tRNAs
DNA is a nucleic acid that consists of thousands of smaller, repeating units called nucleotides. What function do nucleic acids serve besides storing genetic information?