Which of the following are exceptions to the universal genetic code that is used by most organisms?
A. Pyrrolysine
B. Selenocysteine
C. Lysine
D. Phenylalanine
E. Stop
Answer(s):
A. Pyrrolysine
B. Selenocysteine
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Sequencing eukaryotic genomes is more difficult than sequencing genomes of bacteria or archaea because of the _____
A) large size of eukaryotic proteins B) hard-to-find proteins C) high proportion of G-C base pairs in eukaryotic DNA D) large size of eukaryotic genomes and the large amount of eukaryotic repetitive DNA
The two strands of DNA are said to be ________ to one another.
Fill in the blank(s) with the appropriate word(s).
A plasmid that can either exist independently of the chromosome or be integrated into it is called a(n) ________.
Fill in the blank(s) with the appropriate word(s).
A microbiologist must culture a patient's feces for intestinal pathogens. Which of the following would likely be present in selective media for analyzing this fecal specimen?
A. thioglycolic acid B. sheep red blood cells C. bile salts D. peptone E. NaCl