Question 1

Which of the following best describes the primary function of recombinant protein production in biotechnology?

Accepted Answer

To produce specific proteins by inserting foreign genes into host organisms

Question 2

A scientist wants to produce human insulin using bacteria. Which process would most likely be used to achieve this goal?

Accepted Answer

Using recombinant DNA technology to insert the human insulin gene into bacterial plasmids

Question 3

Which of the following equations correctly represents the central dogma of molecular biology?

Accepted Answer

$$DNA \rightarrow RNA \rightarrow Protein$$

Question 4

A mutation occurs in the gene encoding a protein. Which of the following is the most likely consequence?

Accepted Answer

The protein's amino acid sequence may change, potentially altering its function

Question 5

Which of the following best explains why recombinant proteins are often produced in bacteria rather than in human cells?

Accepted Answer

Bacteria can replicate and express foreign genes rapidly and cost-effectively

Question 6

A researcher is analyzing the size of a molecule using gel electrophoresis. Which property of the molecule primarily determines its migration through the gel?

Accepted Answer

The molecule's size (molecular weight)

Question 7

Which of the following statements about gene cloning is correct?

Accepted Answer

Gene cloning is used to produce multiple copies of a specific DNA sequence

Question 8

If a scientist wants to separate DNA fragments by size, which laboratory technique should they use?

Accepted Answer

Gel electrophoresis

Question 9

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

Accepted Answer

Producing genetically modified crops with increased resistance to pests

Question 10

A patient is diagnosed with a genetic disorder caused by a single defective protein. Which biotechnology approach could potentially treat this disorder?

Accepted Answer

Administering recombinant protein to replace the defective one

Question 11

Which of the following best describes the role of plasmids in genetic engineering?

Accepted Answer

Plasmids serve as vectors to transfer foreign genes into host cells

Question 12

A scientist uses restriction enzymes in a genetic engineering experiment. What is the primary function of these enzymes?

Accepted Answer

To cut DNA at specific nucleotide sequences

Question 13

Which of the following is a potential ethical concern associated with recombinant DNA technology?

Accepted Answer

The possibility of creating genetically modified organisms that could impact natural ecosystems

Question 14

A student is asked to explain why the size of a DNA molecule affects its movement through an agarose gel. Which explanation is most accurate?

Accepted Answer

Larger DNA molecules move more slowly because they experience greater resistance in the gel matrix

Question 15

Which of the following best describes the process of transformation in bacteria?

Accepted Answer

The uptake of foreign DNA from the environment into a bacterial cell

Question 16

A researcher wants to amplify a specific DNA sequence for further study. Which technique should they use?

Accepted Answer

Polymerase Chain Reaction (PCR)

Question 17

Which of the following is a direct result of a successful gene cloning experiment?

Accepted Answer

Multiple identical copies of a specific DNA sequence are produced

Question 18

A biotechnology company is designing a plasmid vector for gene cloning. Which feature is essential for selecting bacteria that have taken up the plasmid?

Accepted Answer

An antibiotic resistance gene

Question 19

Which of the following best explains why recombinant DNA technology has revolutionized medicine?

Accepted Answer

It allows for the mass production of therapeutic proteins such as insulin and growth hormones

Question 20

A patient receives a recombinant protein drug. Which process was most likely used to produce this drug?

Accepted Answer

Insertion of the human gene encoding the protein into a bacterial plasmid, followed by bacterial expression and protein purification

Study Notes on Recombinant Proteins and Molecular Biology Techniques

Study Guide - Practice Questions

Study Guide - Flashcards