Quizizz Review- Bacteria Genetics- CIAT

What does horizontal gene transfer in bacteria mean?

• Genes are exchanged between cells of different generations.

• Genes are lost during cell division.

• Genes are exchanged between cells of the same generation.

• Genes are transferred from parents to their progeny.

Which method of horizontal gene transfer is most common in bacteria?

• Conjugation

• Transduction

• Replication

• Transformation

What are plasmids?

• Mobile sections of DNA that can move within genomes.

• Circular DNA sections that replicate independently of chromosomes.

• Enzymes that catalyze the cutting and resealing of DNA.

• Proteins that facilitate gene transfer.

How do bacteria typically achieve conjugation?

• By releasing DNA into the environment.

• Through a process called transposition.

• Through the action of bacteriophages.

• By using a conjugation pilus for cell-cell contact.

What is the role of a nuclease in bacterial conjugation?

• It replicates the plasmid DNA.

• It moves the plasmid DNA to another bacterium.

• It breaks one strand of the plasmid DNA at the origin of transfer site.

• It creates a conjugation pilus.

What happens to bacteria that are not naturally competent for transformation?

• They are killed by competent bacteria.

• They can still undergo conjugation and transduction.

• They cannot replicate.

• They transform without the need for competency.

During which process do bacteriophages play a role?

• Replication

• Transduction

• Transformation

• Conjugation

What is the difference between generalized and specialized transduction?

• Specialized transduction occurs more frequently than generalized transduction.

• Generalized transduction results in the death of the host cell, while specialized does not.

• Specialized transduction can occur without bacteriophages, while generalized cannot.

• Generalized transduction involves the transfer of any part of the bacterial DNA, while specialized transduction involves only specific parts.

Why is horizontal gene transfer important for bacteria?

• It prevents them from acquiring pathogenicity or antibiotic resistance.

• It slows down their adaptation to new environments.

• It ensures that their genome size keeps increasing.

• It allows them to achieve genetic diversity and adapt to new environments.

What happens to transferred genes that don't provide a selective advantage?

• They become the primary source of genetic material.

• They are usually lost by deletion.

• They are replicated more frequently.

• They are transferred to other species.