1- The uptake of free DNA from the environment is called________,while the trans

Question

1- The uptake of free DNA from the environment is called________,while the transfer of DNA upon cell-to-cell contact might result in ________.

a. transformation / conjugation

b. transduction / conjugation

c. conjugation / transformation

d. transformation / transduction

2- A plasmid may

a. replicate independently of the chromosome.

b. be transferred cell-to-cell during conjugation.

c. be integrated into the chromosome.

d. replicate independently of the chromosome, integrate into the chromosome, or be transferred cell-to-cell during conjugation.

3- Plasmids that govern their own transfer are known as

a. transformable.

b. transmutable.

c. conjugative.

d. transfective.

4- A point mutation refers to mutations involving

a. change in a base-pair sequence.

b. the gain of a base pair (microinsertion).

c. the dele6on of a base pair (microdeletion).

d. a substitution, deletion, or addition of one base-pair.

5- Which of the following features are common to transformation,transduction,andconjugation?

a. unidirectional transfer of genes

b. incomplete gene transfer

c. homologous recombination

d. meiosis occurring in the recipient

6- Which of the following methods may introduce foreign DNA intoarecipient?

a. transformation

b. transduction

c. conjugation

d. transformation, transduction, and conjugation

7- The functional unitl of genetic information is the

a. nucleotide.

b. gene.

c. chromosome.

d. protein.

8- Genes that are encoded for polymerases, gyrases, ribosomalproteins, and other proteinses sentialto replication, transcription, and translation are present on

a. chromosomes.

b. plasmids.

c. chromosomes and plasmids.

d. neither chromosomes nor plasmids.

Can you please solve from 1 to 8

Explanation / Answer

1. a. Transformation / conjugation

2. d. replicate independently of the chromosome, integrate into the chromosome, or be transferred

3. c. conjugative

4. d. a substitution, deletion, or addition of one base-pair.

5. a. unidirectional transfer of genes

b. incomplete gene transfer

c. homologous recombination

6. d. transformation, transduction, and conjugation

7. b. gene

8. a. chromosomes

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