Biotechnology: Principles and Processes Practice Questions
NEET · Biology · 992 free MCQs with instant results and detailed explanations.
992
Total
190
Easy
438
Medium
364
Hard
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Topics in Biotechnology: Principles and Processes
Restriction Enzymes
184
Cloning Vectors
184
PCR
204
Gene Transfer Methods
205
Recombinant DNA Technology
215
Sample Questions from Biotechnology: Principles and Processes
Here are 10 sample questions. Start a quiz to get randomized questions with scoring.
Q1
Easy
What enzyme is commonly used to cut DNA at specific sequences in recombinant DNA technology?
A.
Ligase
B.
Helicase
C.
Restriction endonuclease
D.
DNA polymerase
Show Answer & Explanation
Correct Answer: C
Restriction endonucleases are enzymes that cut DNA at specific recognition sites, making them essential for recombinant DNA technology.
Q2
Easy
In which organism are insulin-producing recombinant DNA molecules typically expressed?
A.
Yeast
B.
Bacteria
C.
Plants
D.
Mammals
Show Answer & Explanation
Correct Answer: B
Bacteria, especially E. coli, are commonly used to produce insulin through recombinant DNA technology due to their rapid growth and ability to express human proteins.
Q3
Easy
What is the purpose of a vector in recombinant DNA technology?
A.
To degrade DNA
B.
To amplify DNA
C.
To transport DNA
D.
To stabilize DNA
Show Answer & Explanation
Correct Answer: C
Vectors are DNA molecules that carry foreign DNA into host cells for replication, serving as vehicles for transferring genetic material.
Q4
Medium
Which enzyme is essential for the process of joining DNA fragments in recombinant DNA technology?
A.
Ligase
B.
Restriction Enzyme
C.
Polymerase
D.
Helicase
Show Answer & Explanation
Correct Answer: A
Ligase is the enzyme that facilitates the joining of DNA fragments by forming phosphodiester bonds between them, making it essential in recombinant DNA technology.
Q5
Medium
In recombinant DNA technology, what is the purpose of using a 'vector'?
A.
To amplify the DNA
B.
To introduce foreign DNA into host cells
C.
To cleave DNA at specific sites
D.
To visualize the DNA fragments
Show Answer & Explanation
Correct Answer: B
Vectors are used to carry foreign DNA into host cells, allowing for the introduction and expression of the recombinant DNA.
Q6
Medium
What type of DNA molecule is commonly used as a vector in cloning?
A.
Plasmid
B.
mRNA
C.
Genomic DNA
D.
Ribosomal RNA
Show Answer & Explanation
Correct Answer: A
Plasmids are common vectors used in cloning because they can replicate independently within a host cell and can carry foreign DNA.
Q7
Medium
Which of the following techniques is used to amplify specific DNA sequences?
A.
PCR (Polymerase Chain Reaction)
B.
Gel Electrophoresis
C.
Northern Blotting
D.
Sanger Sequencing
Show Answer & Explanation
Correct Answer: A
PCR is a technique specifically designed to amplify specific DNA sequences, making it a crucial tool in molecular biology.
Q8
Hard
Which of the following enzymes is crucial for the process of inserting a foreign DNA fragment into a plasmid vector during recombinant DNA technology?
A.
DNA ligase
B.
Restriction endonuclease
C.
DNA polymerase
D.
Reverse transcriptase
Show Answer & Explanation
Correct Answer: A
DNA ligase is essential for joining the foreign DNA fragment to the plasmid vector, sealing the nicks in the sugar-phosphate backbone to create a continuous DNA molecule.
Q9
Hard
In the context of recombinant DNA technology, what is the purpose of using selectable markers in plasmid vectors?
A.
To enhance the cloning efficiency
B.
To identify successfully transformed cells
C.
To assist in DNA replication
D.
To increase plasmid stability
Show Answer & Explanation
Correct Answer: B
Selectable markers, such as antibiotic resistance genes, help in identifying which cells have successfully taken up the plasmid by allowing only those cells to grow in selective media.
Q10
Hard
If a scientist uses a restriction enzyme that cuts DNA at a specific site creating sticky ends, what is the advantage of these sticky ends in recombinant DNA technology?
A.
They allow for blunt-end ligation.
B.
They facilitate more stable and specific hybridization.
C.
They prevent self-ligation of plasmids.
D.
They increase the length of the DNA fragment.
Show Answer & Explanation
Correct Answer: B
Sticky ends provide complementary overhangs that encourage hybridization between the foreign DNA and the plasmid, leading to more stable and specific connections for ligation.
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Biotechnology: Principles and Processes — NEET Biology Practice Questions Online
This page contains 992 practice MCQs for the chapter Biotechnology: Principles and Processes in NEET Biology. The questions are organized by difficulty — 190 easy, 438 medium, 364 hard — so you can choose the right level for your preparation.
Every question includes a detailed explanation to help you understand the concept, not just memorize answers. Take a timed quiz to simulate exam conditions, or practice at your own pace with no time limit. This chapter covers 5 topics, giving you comprehensive coverage of the entire chapter.