A chromosome's gene sequence that was A-B-C-D-E-F-G before damage and A-B-C-F-G after is an example of ____
a. inversion
b. deletion
c. duplication
d. translocation
e. cross over
ANSWER: b
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Functional differences can be observed by using 16S rRNA gene phylogenetics of a microbial community
Indicate whether the statement is true or false.
Which of the following is not true of the formation of a bacterial translation initiation complex?
A. The 30S ribosome associates with the mRNA before the 50S ribosome. B. N-formylmethionyl-tRNAfMet binds in the P site. C. IF-3 binding to GTP is required for the charged tRNA to associate with the first mRNA codon. D. IF-1, IF-2, and IF-3 dissociate upon the 50S subunit binding.
In alcoholic fermentation, the final product is
a. pyruvate b. ethanol c. acetaldehyde d. acetyl CoA e. lactate
Which one of the following is most resistant to chemical biocides?
A) gram-negative bacteria B) gram-positive bacteria C) mycobacteria D) protozoan cysts E) viruses with lipid envelopes