10 Questions
Which of the following best describes the composition of viral chromosomes?
Nucleic acid, either DNA or RNA, single or double stranded
What is a characteristic feature of bacterial chromosomes?
Readily replicated and transcribed
What is a distinct feature of eukaryotic genomes?
Refer to one complete set of nuclear chromosomes
What distinguishes the genome of bacteria from that of eukaryotes?
Much smaller than eukaryotic genomes
What is a characteristic of the structure of bacterial chromosomal DNA?
Associated with DNA-binding proteins
What is the term for the nontranscribed DNA between adjacent genes?
Intergenic regions
What enzyme introduces negative supercoils using energy from ATP in bacteria?
DNA gyrase
What is the main effect of negative supercoiling in bacterial DNA?
Facilitates compaction of the chromosome
Which drug class is known to inhibit gyrase and other bacterial topoisomerases, but does not inhibit eukaryotic topoisomerases?
Quinolones
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?
Loop domains
Test your knowledge about chromosomes, genomes, and the genetic material of organisms, including bacteria, eukaryotes, mitochondria, and chloroplasts.
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