Question 1

Which of the following is NOT a primary goal of recombinant DNA technology?

Accepted Answer

To increase the rate of natural mutations in populations

Question 2

Restriction enzymes are crucial in recombinant DNA technology because they:

Accepted Answer

Cut DNA at specific nucleotide sequences

Question 3

Vectors in recombinant DNA technology are best described as:

Accepted Answer

Nucleic acid molecules that deliver genes into a cell

Question 4

Which step in gene cloning involves the use of DNA ligase?

Accepted Answer

Sealing the DNA fragment into the vector

Question 5

A scientist wants to produce recombinant insulin using E. coli. Which sequence of steps is correct?

Accepted Answer

Isolate donor DNA → Cut with restriction enzyme → Insert into vector → Place vector in bacteria → Grow bacteria → Isolate recombinant protein

Question 6

Which of the following best describes the role of restriction enzymes in bacteria?

Accepted Answer

They serve as a defense mechanism against bacteriophages

Question 7

In the context of recombinant DNA technology, what is the main function of a plasmid?

Accepted Answer

To act as a vector for gene delivery

Question 8

Which of the following is a broad application of recombinant DNA technology?

Accepted Answer

Creating organisms that produce pharmaceuticals

Question 9

Polymerase Chain Reaction (PCR) is primarily used to:

Accepted Answer

Amplify specific DNA sequences

Question 10

After PCR amplification, which step is typically performed to analyze the DNA?

Accepted Answer

Gel electrophoresis

Question 11

A researcher wants to clone a gene from human DNA. Which tool should they use to cut out the gene at a specific sequence?

Accepted Answer

Restriction enzyme

Question 12

Which of the following is NOT a typical use of PCR?

Accepted Answer

Delivering genes into cells

Question 13

In a multi-step gene cloning process, which equation best represents the exponential amplification of DNA during PCR?

Accepted Answer

$$N = N_0$ 	imes 2^n$$

Question 14

Which scenario best illustrates the elimination of undesirable phenotypic traits using recombinant DNA technology?

Accepted Answer

Inserting a gene into crops to make them resistant to pests

Question 15

A vector used in recombinant DNA technology must have which property to be effective?

Accepted Answer

Ability to replicate independently within the host cell

Question 16

Which of the following is a real-world application of recombinant DNA technology in medicine?

Accepted Answer

Production of recombinant insulin for diabetes treatment

Question 17

Which step in gene cloning is directly responsible for the creation of recombinant proteins?

Accepted Answer

Growing bacteria containing the recombinant plasmid

Question 18

A scientist uses a viral genome as a vector in recombinant DNA technology. What is the main advantage of using a viral vector?

Accepted Answer

Efficient delivery of genes into host cells

Question 19

Which of the following best explains why restriction enzymes are used before DNA ligase in gene cloning?

Accepted Answer

Restriction enzymes create compatible ends for ligation

Question 20

In a scenario where a gene is inserted into a plasmid and then placed into E. coli, which process allows the gene to be replicated and expressed?

Accepted Answer

Bacterial replication and protein synthesis

Recombinant DNA Technology: Tools, Methods, and Applications

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