alleryStart learning →Most bacteria have a genome that is
- haploid
- polyploid
- triploid
- diploid
Show answer and solution
Correct answer: A. haploid
Almost all bacteria carry a single copy of each gene, so a loss-of-function mutation cannot be masked.
AP EAMCET Botany Unit 9: Microbiology — practice questions — page 2
Explore 52 free Botany Unit 9: Microbiology questions in AP EAMCET Biology. Open each question or exercise to read its content, reference answers and available explanation.
Practise Botany Unit 9: Microbiology with Quill →Botany Unit 9: Microbiology questions and exercises with answers
Showing questions 31–52 of 52.
Most bacteria have a genome that isRead the answer and worked solution →Small extra-chromosomal DNA molecules that may carry antibiotic resistance genes areRead the answer and worked solution →Uptake of free DNA from the surroundings by a bacterium is calledRead the answer and worked solution →Gene transfer between bacteria by bacteriophages is calledRead the answer and worked solution →Gene acquisition from other bacteria or the environment is termedRead the answer and worked solution →Who showed in 1892 that filtered sap of diseased tobacco stayed infectious?Read the answer and worked solution →A complete virus particle is called aRead the answer and worked solution →The protein coat of a virus is theRead the answer and worked solution →Protein subunits that make up a capsid are calledRead the answer and worked solution →The viral envelope originates from theRead the answer and worked solution →The head of Enterobacteria phage T4 is joined to a tail that isRead the answer and worked solution →Viruses cannot reproduce on their own because theyRead the answer and worked solution →Which viral stage involves specific binding of capsid proteins to host receptors?Read the answer and worked solution →HIV gp120 binds which molecule on host cells?Read the answer and worked solution →Removal of the viral capsid to free the genome is calledRead the answer and worked solution →Plant viruses move from cell to cell throughRead the answer and worked solution →A viral genome integrated into the host chromosome is aRead the answer and worked solution →Which phage cycle immediately bursts the host bacterium?Read the answer and worked solution →Phages able to undergo lysogeny are calledRead the answer and worked solution →Which kind of phage is better suited for phage therapy?Read the answer and worked solution →Tailed phages lyse the host wall using the enzymeRead the answer and worked solution →A myovirus injects its DNA into bacteria byRead the answer and worked solution →
Worked practice questions
Small extra-chromosomal DNA molecules that may carry antibiotic resistance genes are
- capsids
- plasmids
- prophages
- nucleoids
Show answer and solution
Correct answer: B. plasmids
Plasmids are small circular DNA molecules separate from the chromosome and often carry resistance genes.
Uptake of free DNA from the surroundings by a bacterium is called
- transformation
- transduction
- conjugation
- translation
Show answer and solution
Correct answer: A. transformation
Taking up exogenous DNA from the environment is transformation.
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