Biotechnology MCQ questions and answers

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Biotechnology MCQ questions and answers

Question 1: What is biotechnology?

a) The use of living organisms to make products

b) The study of chemicals in living organisms

c) The study of ecosystems

d) The use of machines to study biology

Answer: a) The use of living organisms to make products


Question 2: Which of these is a tool used in genetic engineering?

a) Plasmid

b) Ribosome

c) Mitochondria

d) Golgi apparatus

Answer: a) Plasmid


Question 3: What is the term for introducing foreign DNA into a host cell?

a) Transformation

b) Transduction

c) Conjugation

d) Replication

Answer: a) Transformation


Question 4: Which enzyme is used to cut DNA at specific sequences?

a) Ligase

b) Polymerase

c) Restriction enzyme

d) Helicase

Answer: c) Restriction enzyme


Question 5: What is the function of DNA ligase?

a) Cut DNA

b) Join DNA fragments

c) Copy DNA

d) Unwind DNA

Answer: b) Join DNA fragments


Question 6: What is a vector in genetic engineering?

a) A tool used to cut DNA

b) A carrier used to transfer DNA into a host cell

c) A type of enzyme

d) A type of protein

Answer: b) A carrier used to transfer DNA into a host cell


Question 7: Which of these is commonly used as a vector?

a) Plasmid

b) Ribosome

c) Mitochondria

d) Golgi apparatus

Answer: a) Plasmid


Question 8: What is the term for the production of genetically identical organisms?

a) Cloning

b) Hybridization

c) Mutation

d) Transformation

Answer: a) Cloning


Question 9: What is the first step in genetic engineering?

a) Isolation of DNA

b) Cutting DNA

c) Inserting DNA into a vector

d) Introducing DNA into a host

Answer: a) Isolation of DNA


Question 10: What is the term for the study of genomes?

a) Genetics

b) Genomics

c) Biotechnology

d) Bioinformatics

Answer: b) Genomics


Question 11: What is PCR used for?

a) Cutting DNA

b) Amplifying DNA

c) Joining DNA

d) Sequencing DNA

Answer: b) Amplifying DNA


Question 12: Which enzyme is used in PCR?

a) DNA ligase

b) DNA polymerase

c) Restriction enzyme

d) RNA polymerase

Answer: b) DNA polymerase


Question 13: What is the first step in PCR?

a) Denaturation

b) Annealing

c) Extension

d) Isolation

Answer: a) Denaturation


Question 14: What is the purpose of primers in PCR?

a) To cut DNA

b) To join DNA

c) To provide a starting point for DNA synthesis

d) To unwind DNA

Answer: c) To provide a starting point for DNA synthesis


Question 15: What is the temperature used for denaturation in PCR?

a) 50°C

b) 72°C

c) 95°C

d) 37°C

Answer: c) 95°C


Question 16: Which of these is an application of biotechnology in medicine?

a) Production of antibiotics

b) Production of biofuels

c) Production of fertilizers

d) Production of plastics

Answer: a) Production of antibiotics


Question 17: What is the term for using living organisms to clean up pollutants?

a) Bioremediation

b) Bioaccumulation

c) Biomagnification

d) Biodegradation

Answer: a) Bioremediation


Question 18: Which of these is a genetically modified crop?

a) Bt cotton

b) Organic wheat

c) Hybrid rice

d) Natural maize

Answer: a) Bt cotton


Question 19: What is the purpose of golden rice?

a) To increase yield

b) To provide vitamin A

c) To resist pests

d) To grow in drought conditions

Answer: b) To provide vitamin A


Question 20: Which of these is an example of a biopharmaceutical?

a) Insulin

b) Aspirin

c) Paracetamol

d) Penicillin

Answer: a) Insulin


Question 21: What is the term for producing genetically identical organisms?

a) Cloning

b) Hybridization

c) Mutation

d) Transformation

Answer: a) Cloning


Question 22: Which animal was the first to be cloned?

a) Mouse

b) Sheep (Dolly)

c) Cow

d) Dog

Answer: b) Sheep (Dolly)


Question 23: What are stem cells?

a) Cells that can differentiate into other cell types

b) Cells that produce energy

c) Cells that fight infections

d) Cells that carry oxygen

Answer: a) Cells that can differentiate into other cell types


Question 24: Which of these is a source of stem cells?

a) Bone marrow

b) Skin

c) Liver

d) Kidney

Answer: a) Bone marrow


Question 25: What is the term for stem cells that can become any cell type?

a) Totipotent

b) Pluripotent

c) Multipotent

d) Unipotent

Answer: a) Totipotent


Question 26: What is bioinformatics?

a) The study of biological data using computers

b) The study of ecosystems

c) The study of chemicals in living organisms

d) The study of genetics

Answer: a) The study of biological data using computers


Question 27: Which of these is a database used in bioinformatics?

a) GenBank

b) PubMed

c) Google Scholar

d) Wikipedia

Answer: a) GenBank


Question 28: What is the purpose of BLAST in bioinformatics?

a) To compare DNA sequences

b) To cut DNA

c) To join DNA

d) To amplify DNA

Answer: a) To compare DNA sequences


Question 29: What is the term for predicting the 3D structure of a protein?

a) Protein folding

b) Protein sequencing

c) Protein synthesis

d) Protein degradation

Answer: a) Protein folding


Question 30: Which of these is a tool used in bioinformatics?

a) BLAST

b) PCR

c) Gel electrophoresis

d) Centrifugation

Answer: a) BLAST


Question 31: What is gene therapy?

a) The use of genes to treat diseases

b) The study of genes

c) The cloning of genes

d) The sequencing of genes

Answer: a) The use of genes to treat diseases


Question 32: Which of these is a target for gene therapy?

a) Cancer

b) Diabetes

c) Hypertension

d) Asthma

Answer: a) Cancer


Question 33: What is the term for introducing a healthy gene to replace a defective one?

a) Gene addition

b) Gene silencing

c) Gene editing

d) Gene replacement

Answer: d) Gene replacement


Question 34: Which virus is commonly used as a vector in gene therapy?

a) Adenovirus

b) Influenza virus

c) HIV

d) Herpes virus

Answer: a) Adenovirus


Question 35: What is the main challenge of gene therapy?

a) High cost

b) Ethical concerns

c) Immune response

d) All of the above

Answer: d) All of the above


Question 36: What is CRISPR-Cas9 used for?

a) Cutting DNA

b) Joining DNA

c) Amplifying DNA

d) Sequencing DNA

Answer: a) Cutting DNA


Question 37: What does CRISPR stand for?

a) Clustered Regularly Interspaced Short Palindromic Repeats

b) Cutting RNA for Insertion and Sequencing

c) Copying Repeated Sequences in DNA

d) Creating Recombinant DNA Sequences

Answer: a) Clustered Regularly Interspaced Short Palindromic Repeats


Question 38: What is the role of Cas9 in CRISPR?

a) To cut DNA

b) To join DNA

c) To amplify DNA

d) To sequence DNA

Answer: a) To cut DNA


Question 39: Which of these is an application of CRISPR?

a) Gene editing

b) DNA sequencing

c) Protein synthesis

d) RNA interference

Answer: a) Gene editing


Question 40: What is the term for the RNA molecule that guides Cas9 to the target DNA?

a) Guide RNA

b) Messenger RNA

c) Transfer RNA

d) Ribosomal RNA

Answer: a) Guide RNA


Question 41: Which of these is an example of industrial biotechnology?

a) Production of antibiotics

b) Production of biofuels

c) Production of fertilizers

d) Production of plastics

Answer: b) Production of biofuels


Question 42: What is the term for using microorganisms to produce chemicals?

a) Fermentation

b) Distillation

c) Polymerization

d) Crystallization

Answer: a) Fermentation


Question 43: Which microorganism is used to produce insulin?

a) Escherichia coli

b) Saccharomyces cerevisiae

c) Lactobacillus

d) Streptococcus

Answer: a) Escherichia coli


Question 44: What is the term for the production of alcohol using yeast?

a) Fermentation

b) Distillation

c) Polymerization

d) Crystallization

Answer: a) Fermentation


Question 45: Which of these is a product of industrial biotechnology?

a) Ethanol

b) Aspirin

c) Paracetamol

d) Penicillin

Answer: a) Ethanol


Question 46: What is the term for crops that have been genetically modified?

a) GMO crops

b) Organic crops

c) Hybrid crops

d) Natural crops

Answer: a) GMO crops


Question 47: Which of these is a genetically modified crop?

a) Bt cotton

b) Organic wheat

c) Hybrid rice

d) Natural maize

Answer: a) Bt cotton


Question 48: What is the purpose of Bt cotton?

a) To resist pests

b) To increase yield

c) To grow in drought conditions

d) To provide nutrients

Answer: a) To resist pests


Question 49: Which of these is a benefit of genetically modified crops?

a) Increased yield

b) Reduced pesticide use

c) Improved nutrition

d) All of the above

Answer: d) All of the above


Question 50: What is the term for the transfer of genes into plants?

a) Genetic engineering

b) Hybridization

c) Mutation breeding

d) Crossbreeding

Answer: a) Genetic engineering


Question 51: What is the main ethical concern of genetic engineering?

a) Safety

b) Cost

c) Environmental impact

d) All of the above

Answer: d) All of the above


Question 52: What is the term for the unintended effects of genetic engineering?

a) Off-target effects

b) Side effects

c) Mutations

d) Recombination

Answer: a) Off-target effects


Question 53: Which of these is a concern of genetically modified organisms (GMOs)?

a) Impact on biodiversity

b) Risk of allergies

c) Ethical concerns

d) All of the above

Answer: d) All of the above


Question 54: What is the term for the ownership of genetically modified organisms?

a) Patents

b) Copyrights

c) Trademarks

d) Licenses

Answer: a) Patents


Question 55: Which of these is a social issue related to biotechnology?

a) Access to technology

b) Cost of treatment

c) Ethical concerns

d) All of the above

Answer: d) All of the above


Question 56: What is the term for using living organisms to clean up pollutants?

a) Bioremediation

b) Bioaccumulation

c) Biomagnification

d) Biodegradation

Answer: a) Bioremediation


Question 57: Which of these is an example of bioremediation?

a) Using bacteria to clean oil spills

b) Using plants to absorb heavy metals

c) Using fungi to degrade plastics

d) All of the above

Answer: d) All of the above


Question 58: What is the term for the accumulation of pollutants in living organisms?

a) Bioaccumulation

b) Biomagnification

c) Biodegradation

d) Bioremediation

Answer: a) Bioaccumulation


Question 59: Which of these is a benefit of environmental biotechnology?

a) Reduced pollution

b) Sustainable practices

c) Conservation of resources

d) All of the above

Answer: d) All of the above


Question 60: What is the term for using plants to clean up pollutants?

a) Phytoremediation

b) Bioremediation

c) Bioaccumulation

d) Biomagnification

Answer: a) Phytoremediation




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