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MCQOPTIONS
This section includes 14620 Mcqs, each offering curated multiple-choice questions to sharpen your NEET knowledge and support exam preparation. Choose a topic below to get started.
| 14401. |
Carotid artery carries: |
| A. | Impure blood from the brain. |
| B. | Impure blood to kidneys. |
| C. | Oxygenated blood to the brain. |
| D. | Oxygenated blood to the heart. |
| Answer» D. Oxygenated blood to the heart. | |
| 14402. |
Which one of the following blood vessel is without valves? |
| A. | Artery |
| B. | Pulmonary aorta |
| C. | Vein |
| D. | Systemic aorta |
| Answer» B. Pulmonary aorta | |
| 14403. |
Consider the following statements. (i) Transgenic animals are more sensitive to toxic substance than non-transgenic animals. (ii) Useful biological products can be produced by introducing portion of DNA into transgenic animals which codes for a particular product. (iii) Brazzein is protein produced by a west African plant, Pentadiplandra brazzeana which is approximately 2000 times as sweet as sugar. Which of the statements are given above is correct? |
| A. | (i), (ii) and (iii) |
| B. | (i) and (ii) |
| C. | (i) and (iii) |
| D. | None of these |
| Answer» B. (i) and (ii) | |
| 14404. |
Following are the steps in one type of gene therapy. (i) Inject engineered cells into patients bone marrow. (ii) Viral DNA earring the normal allele inserts into chromosome. (iii) Let retrovirus infect bone marrow cells that have removed from patient and cultured. (iv) Insert RNA version of normal allele into retrovirus. The correct sequence is: |
| A. | (i), (ii), (iii) and (iv) |
| B. | (iv), (iii), (ii) and (i) |
| C. | (i), (ii), (iv) and (iii) |
| D. | (iv), (iii), (i) and (ii) |
| Answer» C. (i), (ii), (iv) and (iii) | |
| 14405. |
By the use of biotechnology in which of the following bacteria production of \[{{B}_{2}}\]vitamins has been increased to about 20,000 times? |
| A. | Ashbya gossypii |
| B. | E. coli |
| C. | Pseudomonas denitrificans |
| D. | Propionibacterium shermanii |
| Answer» B. E. coli | |
| 14406. |
The name of the drug used in cancer treatment produced by biotechnology is: |
| A. | Interferon |
| B. | Hgh |
| C. | TSH |
| D. | Insulin |
| Answer» B. Hgh | |
| 14407. |
DNA vaccines are: |
| A. | mixture of hormones |
| B. | recombinant vaccines |
| C. | synthetic vaccines |
| D. | pure DNA or RNA |
| Answer» E. | |
| 14408. |
When a patient with defective ADA was treated, which of the following steps was performed for gene therapy? (i) Lymphocytes were obtained from the patients. (ii) Lymphocytes are transferred to culture dishes. (iii) Lymphocytes were transfected with normal ADA genes. (iv) The transfected cells are returned to the patients. |
| A. | All of the above |
| B. | (iii) and (iv) |
| C. | Only (iv) |
| D. | SCID cannot be treated |
| Answer» B. (iii) and (iv) | |
| 14409. |
A genetically engineered micro-organism used successfully in bioremediation of oil spills is a species of: |
| A. | Pseudomonas |
| B. | Trichoderma |
| C. | Xanthomonas |
| D. | Bacillus |
| Answer» B. Trichoderma | |
| 14410. |
Humulin is: |
| A. | A form of chitin |
| B. | A new digestive enzyme |
| C. | A powerful antibiotic |
| D. | Human insulin |
| Answer» E. | |
| 14411. |
Golden rice was created by transforming rice with two beta-carotene biosynthesis genes, namely: |
| A. | Psy and cry I genes |
| B. | LCY-E |
| C. | CHY-1 |
| D. | CHY-2 |
| Answer» B. LCY-E | |
| 14412. |
.............infects the roots of tobacco plants which reduces the production of tobacco? |
| A. | Nematode (Meloidogyne incognita) |
| B. | Coleopterans (beetles) |
| C. | Lepidopterans (army worm) |
| D. | Dipterans (mosquitoes) |
| Answer» B. Coleopterans (beetles) | |
| 14413. |
Which of the following biotechnological product can enhance the immune system? |
| A. | IL-2 |
| B. | GM-CSF |
| C. | TNF |
| D. | All of these |
| Answer» E. | |
| 14414. |
The main use of recombinant DNA technology are: |
| A. | production of transgenic humans. |
| B. | the creation of cells capable of synthesising economically important molecules. |
| C. | the efficient reduction of useful proteins. |
| D. | Both [b] and [c] |
| Answer» E. | |
| 14415. |
In 1921, two Canadian scientists Frederick G. Banting and Charles. H. Best successfully purified insulin from a: |
| A. | Pig's pancreas |
| B. | Camel's pancreas |
| C. | Dog's pancreas |
| D. | Cattle's pancreas |
| Answer» D. Cattle's pancreas | |
| 14416. |
Yersinia pestis is used as biological weapon. It causes a disease: |
| A. | Smallpox |
| B. | Plague |
| C. | Tularemia |
| D. | Anthrax |
| Answer» C. Tularemia | |
| 14417. |
Polyploidy can result from: |
| A. | Double fertilisation |
| B. | Polyspermy |
| C. | Diploid gametes |
| D. | All of these |
| Answer» D. All of these | |
| 14418. |
Golden rice is a transgenic crop of the future with the following improved trait: |
| A. | High lysine (essential amino acid) content |
| B. | Insect resistance |
| C. | High protein content |
| D. | High vitamin-A content |
| Answer» E. | |
| 14419. |
The bacteria generally used for generic engineering is: |
| A. | Agrobacterium |
| B. | Bacillus |
| C. | Pseudomonas |
| D. | Clostridium |
| Answer» B. Bacillus | |
| 14420. |
In a criminal trial in which DNA fingerprinting has been used, a genetic "match" between the suspect and evidence left at the crime scene provides: |
| A. | definitive proof that the suspect is guilty. |
| B. | a high probability that the suspect is guilty. |
| C. | a low probability that the suspect is guilty. |
| D. | definitive proof that the suspect is innocent. |
| Answer» C. a low probability that the suspect is guilty. | |
| 14421. |
Most widely used bioweapon is: |
| A. | Bacillus subtilis |
| B. | Pseudomonas putida |
| C. | Bacillus anthracis |
| D. | None of the above |
| Answer» D. None of the above | |
| 14422. |
Which was the first product contributed to human kind by science of biotechnology in early 1970's? |
| A. | Somatotropin |
| B. | Insulin |
| C. | Cytokines |
| D. | Erythropoietin |
| Answer» B. Insulin | |
| 14423. |
Multicellular organisms that carry a specific genetic change in each cell because of an intervention at the embryo level is a: |
| A. | Transversion |
| B. | Transition |
| C. | Transgenic |
| D. | Transformant |
| Answer» D. Transformant | |
| 14424. |
Which of the following statement is incorrect? (i) Recombinant DNA technology is used to improve crop plants by increasing their productivity, by making them more nutritious and by developing disease resistant. (ii) Bt cotton is resistant to bollworm infestation. (iii) Bacillus thuringiensis form cry protein during any phase of their growth. (iv) Bacillus thuringiensis is not harmed by self cry protein because of its occurrence as protoxin (inactive). (v) Protoxin cry protein is changed into active cry protein in the stomach of insects due to alkaline pH in stomach. |
| A. | (i), (ii) and (iv) |
| B. | (i) and (iv) |
| C. | Only (iii) |
| D. | All of the above |
| Answer» D. All of the above | |
| 14425. |
Match column-I with column-II and choose the correct option. Column-I Column-II A. Golden rice I. Increased shelf life B. Flavr Savr II. hGH C. Mouse III. Vitamin A D. Transgenic pig IV. Organ transplantation |
| A. | A-III; B-I; C-II; D-IV |
| B. | A-II; B-I; C-III; D-IV |
| C. | A-II; B-III; C-I; D-IV |
| D. | A-IV; B-I; C-II; D-III |
| Answer» B. A-II; B-I; C-III; D-IV | |
| 14426. |
Which of the following is/are correct? (i) Biowar Biowar is the use of biological weapons against humans and or their crops and animals. (ii) Bioethics Bioethics is the unauthorized use of bioresources and traditional knowledge related to bioresources for commercial benefits. (iii) Biopatent Exploitation of bioresources of other nations without proper authorisation. |
| A. | Only (ii) |
| B. | Only (i) |
| C. | (i) and (ii) |
| D. | (i) and (iii) |
| Answer» C. (i) and (ii) | |
| 14427. |
Flavr savr variety of Tomato is improved variety developed through incorporation of a transgene. Flavr savr variety of tomato remains fresh for long because it: |
| A. | has little polygalacturonase |
| B. | abundant polygalacturonase |
| C. | has gene for antibiotic resistance |
| D. | lacks amylase |
| Answer» B. abundant polygalacturonase | |
| 14428. |
A GM crop is transgenic. It can be harmful because it may cause: |
| A. | allergies and toxicity. |
| B. | incorporation of antibiotic resistance in human beings. |
| C. | disturbance in metabolism due to enzyme for antibiotic resistance. |
| D. | All of the above |
| Answer» E. | |
| 14429. |
Intra-aortic balloon pump is inflated by [JIPMER 2002] |
| A. | Hydrogen |
| B. | Oxygen |
| C. | Helium |
| D. | Chlorine |
| Answer» D. Chlorine | |
| 14430. |
Which of the following statements represent/s 'cloning'? |
| A. | all of the cells are derived from one cell and are genetically identical. |
| B. | a gene from one organism has been inserted into a vector and successfully introduced into a host cell. |
| C. | all of the cells in a particular organism are identical. |
| D. | All of the above |
| Answer» E. | |
| 14431. |
Which of the following statements about restriction enzymes is incorrect? |
| A. | They work on DNA extracted from all types of organisms. |
| B. | They are used to glue short segments of DNA. |
| C. | They come in many varieties, each with its own DNA target sequence. |
| D. | They are highly specific for their DNA target sequences. |
| Answer» C. They come in many varieties, each with its own DNA target sequence. | |
| 14432. |
Restriction endonuclease - Hind. II always cuts DNA molecules at a particular point by recognising a specific sequence of: |
| A. | six base pairs |
| B. | five base pairs |
| C. | four base pairs |
| D. | seven base pairs |
| Answer» B. five base pairs | |
| 14433. |
Which of the following is/are used in recombinant DNA technology? (i) Agarose gel (ii) Ethidium bromide (iii) Plasmid vector (iv) Restriction endonuclease |
| A. | (i) and (ii) |
| B. | (ii) and (iii) |
| C. | (iii) and (iv) |
| D. | (i), (ii), (iii) and (iv) |
| Answer» E. | |
| 14434. |
A restriction fragment containing a specific gene of interest can be identified by gel electrophoresis followed by transferring the DNA to a membrane as solid support matrix using a procedure called: |
| A. | Gene amplification |
| B. | Southern blotting |
| C. | Identification of a gene |
| D. | Me Clintock |
| Answer» C. Identification of a gene | |
| 14435. |
In genetic engineering, genes can be inserted from one organism into another or back into the original organism by using which of the following techniques? |
| A. | Polymerase chain reaction |
| B. | Gene gun |
| C. | DNA hybridization |
| D. | Gel electrophoresis |
| Answer» C. DNA hybridization | |
| 14436. |
Which of the following is/are related to biotechnology? (i) In vitro fertilisation. (ii) Synthesis of a gene. (iii) Correcting a defective gene. (iv) Developing a DNA vaccine. |
| A. | (i) and (ii) |
| B. | (ii) and (iii) |
| C. | (iii) and (iv) |
| D. | (i), (ii), (iii) and (iv) |
| Answer» E. | |
| 14437. |
Match column-I with column-II and choose the correct option. Column-I Column-II A. Recombinant DNA I. Sea Weeds B. Ethidium bromide II. DNA staining C. Gel electrophoresis III. Plasmid DNA that has incorporated into human D. Agarose IV. Process by which DNA fragments are separated based on their size |
| A. | A-III; B-II; C-IV; D-I |
| B. | A-III; B-II; C-I; D-IV |
| C. | A-II; B-I; C-IV; D-III |
| D. | A-III; B-IV; C-I; D-II |
| Answer» B. A-III; B-II; C-I; D-IV | |
| 14438. |
Introduction of one or more genes into an organism which normally does not possess them or their deletion by using artificial mean (not by breeding) comes under: |
| A. | Molecular biology |
| B. | Cytogenetics |
| C. | Genetic hybridization |
| D. | Genetic engineering |
| Answer» E. | |
| 14439. |
Which of the following is a critically important tool used in experiments involving DNA hybridisation? |
| A. | DNA sequencing machines |
| B. | Ligases |
| C. | DNA probes |
| D. | Vectors |
| Answer» D. Vectors | |
| 14440. |
A gene is said to be cloned if: |
| A. | the DNA sequence of the gene is known. |
| B. | the function of the gene is known. |
| C. | there is a DNA probe for the gene. |
| D. | the gene has been isolated and copied. |
| Answer» E. | |
| 14441. |
Consider the given figure and identify the correct option. |
| A. | A - Denaturation, B - Annealing, C - Extension, D ? Amplified |
| B. | A - Annealing, B - Deoaturation, C - Extension, D ? Amplified |
| C. | A- Denaturation, B -Annealing, C -Amplified, D ? Extension |
| D. | A-Annealing, B - Denaturation, C -Amplified, D ? Extension |
| Answer» B. A - Annealing, B - Deoaturation, C - Extension, D ? Amplified | |
| 14442. |
A biologist intends to use a polymerase chain reaction to perform a genetic task. The biologist probably is trying to: |
| A. | discover new genes. |
| B. | clone a gene. |
| C. | cut DNA into many small fragments. |
| D. | isolate DNA from a living cell. |
| Answer» C. cut DNA into many small fragments. | |
| 14443. |
Electrophoresis is used to: |
| A. | separate fragments of DNA. |
| B. | clone genes. |
| C. | cut DNA into fragments. |
| D. | match a gene with its function. |
| Answer» B. clone genes. | |
| 14444. |
Polyethylene glycol method is used for: |
| A. | biodiesel production. |
| B. | seedless fruit production. |
| C. | energy production from sewage. |
| D. | gene transfer without a vector. |
| Answer» E. | |
| 14445. |
Match column-I with column-II and select the correct answer using the codes given below. Column-I Column-II A. Southern blotting I. Running of DNA fragments on get. B. Gel electrophoresis II. Cutting of DNA into fragments. C. Cleavage III. Transfer of DNA D. DNA probing IV. Searching for desired DNA fragments |
| A. | A-IV; B-I; C-II; D-III |
| B. | A-III; B-I; C-II; D-IV |
| C. | A-IV; B-I; C-III; D-II |
| D. | A-I; B-IV; C-II; D-III |
| Answer» C. A-IV; B-I; C-III; D-II | |
| 14446. |
Which one of the following pairs of terms/names means one and the same thing? |
| A. | Gene pool of an organism-genome |
| B. | Codon-gene |
| C. | Cistron-triplet |
| D. | DNA fingerprinting-DNA profiling |
| Answer» E. | |
| 14447. |
Match column-I with column-II and choose the correct option. Column-I Column-II A. Eco RI I. Bacillus amyloliquefaciens B. Bam HI II. Haemophilus influenza C. Hind III III. Escherichia coli D. pBR 322 IV. Artificial plasmid |
| A. | A-III; B-I; C-II; D-IV |
| B. | A-II; B-I; C-IV; D-III |
| C. | A-IV; B-I; C-III; D-II |
| D. | A-I; B-IV; C-II; D-III |
| Answer» B. A-II; B-I; C-IV; D-III | |
| 14448. |
Which one of the following option is correct for 1, 2, 3 and 4? |
| A. | 1-Exonuclease; 2-Endonuclease; 3-DNA ligase; 4-Transformation |
| B. | 1-Endonuclease; 2-Exonuclease; 3-DNA ligase; 4-Transformation |
| C. | 1-Exonuclease; 2-Endonuclease; 3- Hydrolase; 4-Transduction |
| D. | 1-Restriction endonuclease; 2-Restriction endonuclease; 3-DNA ligase; 4-Transformation |
| Answer» E. | |
| 14449. |
The RTF region enables the plasmid to: |
| A. | be transmitted to otherbacteria by conjugation. |
| B. | undergo transformation. |
| C. | replicate in the host cell. |
| D. | code for enzymes that inactivate specific drugs. |
| Answer» B. undergo transformation. | |
| 14450. |
For the manufacture of gluconic acid and citric acid, which of the following micro-organism is used [CPMT 1998] |
| A. | Lactobacillus bulgaricus |
| B. | Acetobacter sp. |
| C. | Aspergillus niger |
| D. | Gluconobacter sp. |
| Answer» D. Gluconobacter sp. | |