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WorksheetsPlasmids and Bacterial Genetics Quiz
Total questions: 20
Worksheet time: 10mins
Plasmids are:
Extrachromosomal DNA
Chromosomal proteins
RNA viruses
Cell wall units
Plasmids replicate:
Independently of chromosome
Only during conjugation
Only in stationary phase
Only with host genome
R-plasmids carry:
Metabolic genes
Resistance genes
Virulence factors only
Sporulation genes
Conjugation requires:
Bacteriophage
Pilus
Exotoxin
LPS
F-plasmid is responsible for:
Transformation
Transduction
Conjugation
Spore formation
Donor cell in conjugation is:
F-
Hfr
Spore former
Gram-positive only
Generalized transduction is mediated by:
F plasmid
Pili
Lytic phage
Sex pilus
Specialized transduction is mediated by:
Lysogenic phage
Lytic phage
R-plasmid
Transposon
Transduction involves transfer of:
Plasmids only
Chromosomal DNA via phage
Cell wall proteins
RNA only
Transferable drug resistance commonly occurs through:
Endotoxin
Conjugative plasmids
Teichoic acids
Spores
Transposons carry:
Ribosomal RNA
Mobile resistance genes
Phage capsid
Antigen O
Integrons are important in:
Protein synthesis
Accumulation of resistance genes
Spore formation
Motility
Multiple drug resistance in hospitals is mainly due to:
Capsules
Plasmid transfer
Fimbriae
Spores
Koch discovered:
Antibiotics
Tubercle bacillus
DNA
RNA polymerase
Koch's postulates help in:
Diagnosing viral disease only
Establishing causative agent
Measuring immunity
Testing vaccines
Koch isolated TB bacillus in:
1870
1882
1901
1920
Robert Koch introduced:
Aseptic surgery
Solid media using agar
Antiseptic methods
Electron microscopy
Koch worked extensively on:
TB and cholera
HIV
Malaria
Influenza
Bacterial conjugation leads to:
Mutation
Horizontal gene transfer
Protein synthesis
Vertical inheritance only
Plasmids can code for:
Capsule polysaccharides
Drug resistance & toxins
Chromosome replication
Ribosomes only
