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Questions and Answers
Which of the following best describes the composition of viral chromosomes?
Which of the following best describes the composition of viral chromosomes?
- Contain all the genetic material possessed by an organism
- Nucleic acid, either DNA or RNA, single or double stranded (correct)
- Circular, double-stranded DNA compacted into nucleoid
- Largely devoid of associated proteins
What is a characteristic feature of bacterial chromosomes?
What is a characteristic feature of bacterial chromosomes?
- Capable of packaging long DNA into a small volume
- Consist of mitochondrial genome
- Readily replicated and transcribed (correct)
- Contain less genetic information than eukaryotic chromosomes
What is a distinct feature of eukaryotic genomes?
What is a distinct feature of eukaryotic genomes?
- Refer to one complete set of nuclear chromosomes (correct)
- Consist of mitochondrial genome
- Largely devoid of associated proteins
- Typically a single circular chromosome
What distinguishes the genome of bacteria from that of eukaryotes?
What distinguishes the genome of bacteria from that of eukaryotes?
What is a characteristic of the structure of bacterial chromosomal DNA?
What is a characteristic of the structure of bacterial chromosomal DNA?
What is the term for the nontranscribed DNA between adjacent genes?
What is the term for the nontranscribed DNA between adjacent genes?
What enzyme introduces negative supercoils using energy from ATP in bacteria?
What enzyme introduces negative supercoils using energy from ATP in bacteria?
What is the main effect of negative supercoiling in bacterial DNA?
What is the main effect of negative supercoiling in bacterial DNA?
Which drug class is known to inhibit gyrase and other bacterial topoisomerases, but does not inhibit eukaryotic topoisomerases?
Which drug class is known to inhibit gyrase and other bacterial topoisomerases, but does not inhibit eukaryotic topoisomerases?
What is the term for the DNA compaction microdomains that contain 40,000 to 80,000 bp of DNA in each loop in E. coli?
What is the term for the DNA compaction microdomains that contain 40,000 to 80,000 bp of DNA in each loop in E. coli?
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