Question 1

Which of the following best defines recombinant DNA technology?

Accepted Answer

The manipulation of an organism's genome by introducing, removing, or altering DNA sequences from different sources.

Question 2

Which product is NOT commonly produced using biotechnology?

Accepted Answer

Natural rubber

Question 3

Which of the following is NOT one of the three main goals of recombinant DNA technology?

Accepted Answer

Create organisms that can survive extreme environments

Question 4

Researchers synthesize nucleic acids in the laboratory using which process?

Accepted Answer

Solid-phase chemical synthesis

Question 5

Which is NOT a use of synthetic nucleic acids?

Accepted Answer

Directly sequencing proteins

Question 6

The polymerase chain reaction (PCR) is used primarily to:

Accepted Answer

Amplify specific DNA sequences exponentially

Question 7

A researcher wants to introduce a precise point mutation into a gene. Which technique should they use?

Accepted Answer

Site-directed mutagenesis

Question 8

Reverse transcriptase is used in recombinant DNA technology to:

Accepted Answer

Synthesize complementary DNA (cDNA) from an mRNA template

Question 9

Restriction enzymes are typically sourced from:

Accepted Answer

Bacterial cells

Question 10

Which of the following best describes the action of restriction enzymes?

Accepted Answer

They cut DNA at specific nucleotide sequences.

Question 11

In genetic manipulation, a vector is:

Accepted Answer

A DNA molecule used to carry foreign genetic material into a host cell

Question 12

Which statement about the CRISPR system is correct?

Accepted Answer

It is a bacterial defense mechanism adapted for precise genome editing.

Question 13

DNA probes are used in recombinant DNA technology to:

Accepted Answer

Identify cells containing a specific DNA sequence

Question 14

Gel electrophoresis separates DNA fragments based on:

Accepted Answer

Their size and charge

Question 15

Which artificial technique is NOT used to introduce DNA into cells?

Accepted Answer

Conjugation

Question 16

Fluorescent in situ hybridization (FISH) is useful for:

Accepted Answer

Mapping the location of genes on chromosomes

Question 17

Which equation best represents the exponential amplification of DNA during PCR, where $$n is $$the number of cycles?

Accepted Answer

$$2^n$$

Question 18

Which is a key difference between Sanger sequencing and next-generation sequencing?

Accepted Answer

Sanger sequencing uses chain-terminating nucleotides, while next-generation sequencing allows massively parallel sequencing.

Question 19

A patient is screened for cystic fibrosis using genetic screening. Which step is NOT part of this process?

Accepted Answer

Injecting the patient with restriction enzymes

Question 20

Which is NOT a potential agricultural application of recombinant DNA technology?

Accepted Answer

Increasing the rate of natural selection in wild populations

Ch 8 Learning Objectives Remix

Study Guide - Practice Questions