MCQOPTIONS
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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.
| 1951. |
................. and, ............... are present at N and C terminal of \[\beta \] chain of threonine. |
| A. | Phenylalanine and alanine |
| B. | Glycine and asparagine |
| C. | Leucine and isoleucine |
| D. | Methionine and tryptophan |
| Answer» B. Glycine and asparagine | |
| 1952. |
Demerit of bovine and porcine insulin is: |
| A. | Hypercalcemia |
| B. | Expensive |
| C. | Allergic reactions |
| D. | Mutations in human genome |
| Answer» D. Mutations in human genome | |
| 1953. |
Biotechnology deals with industrial scale production of biopharmaceuticals and biological products using genetically modified: |
| A. | microbes only |
| B. | plants and animals only |
| C. | fungi only |
| D. | All of the above |
| Answer» E. | |
| 1954. |
Modifications by germ line gene therapy are heritable as: |
| A. | the functional gene is incorporated into their genome. |
| B. | the functional gene is incorporated into one of the gene. |
| C. | the functional gene is incorporated into somatic cells. |
| D. | All of the above |
| Answer» B. the functional gene is incorporated into one of the gene. | |
| 1955. |
Match column-I with column-II and choose the correct option. Column-I Column-II A. Escherichia coli I. nif gene B. Bacillus II. Interferon C. Rhizobium meliloti III. Bt toxin D. Pseudomonas putida IV. Bioremediation |
| A. | A-II; B-I; C-IV; D-III |
| 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» D. A-IV; B-I; C-II; D-III | |
| 1956. |
Which of the following Bt crops is being grown in India by the farmers? |
| A. | Cotton |
| B. | Brinjal |
| C. | Soyabean |
| D. | Maize |
| Answer» B. Brinjal | |
| 1957. |
cry n Ab and cry I Ab produce toxins that control: |
| A. | cotton bollworms and corn borer respectively |
| B. | cotton borer and cotton bollworms respectively. |
| C. | tobacco budworms and nematodes respectively. |
| D. | nematodes and tobacco budworms respectively. |
| Answer» B. cotton borer and cotton bollworms respectively. | |
| 1958. |
Maximum utilisation of the techniques of biotechnology has been made in the field of: |
| A. | Agriculture |
| B. | Medicines |
| C. | Industries |
| D. | Biogas production |
| Answer» C. Industries | |
| 1959. |
Which of the following mineral is essential for the normal excitability of cardiac muscles? |
| A. | Calcium ions |
| B. | Potassium ions |
| C. | Magnesium ions |
| D. | All of these |
| Answer» E. | |
| 1960. |
In an experiment it was found that adenine constitutes 31 % and guanine 19%. The quantity of cytosine in this DNA is likely to be: |
| A. | 19% |
| B. | 0.4 |
| C. | 31% |
| D. | 0.5 |
| Answer» B. 0.4 | |
| 1961. |
Which of the following compounds listed below is not a monoamine? |
| A. | Histamine |
| B. | Serotonin |
| C. | Spermine |
| D. | Dopamine |
| Answer» D. Dopamine | |
| 1962. |
Pentoses and hexoses are the most commonly: |
| A. | Disaccharides |
| B. | Monosaccharides |
| C. | Oilgosaccharides |
| D. | Polysaccharides |
| Answer» C. Oilgosaccharides | |
| 1963. |
Which of the following is a micronutrient? |
| A. | Copper |
| B. | Calcium |
| C. | Phosphorus |
| D. | Magnesium |
| Answer» B. Calcium | |
| 1964. |
There is no net synthesis of glucose from fatty acids, because of the irreversible nature of the reaction. |
| A. | Pyruvate to oxaloacetate |
| B. | Pyruvate to acetyl CoA |
| C. | Phosphoenol pyruvate to puruvate |
| D. | Oxaloacetate to phosphoenol pyruvate |
| Answer» C. Phosphoenol pyruvate to puruvate | |
| 1965. |
DNA polymerase enzyme is required for the synthesis of: |
| A. | DNA from DNA |
| B. | DNA from RNA |
| C. | Both [a] and [b] |
| D. | DNA from nucleosides |
| Answer» D. DNA from nucleosides | |
| 1966. |
All the following are pentoses, except: |
| A. | Arabinose |
| B. | Xylose |
| C. | Xylulose |
| D. | Mannose |
| Answer» E. | |
| 1967. |
How many pair of nucleotides are present in one helix of \[\beta \]- DNA? |
| A. | 10 |
| B. | 12 |
| C. | 5 |
| D. | 6 |
| Answer» B. 12 | |
| 1968. |
The number of essential amino acids in a man is: |
| A. | 9 |
| B. | 8 |
| C. | 10 |
| D. | 14 |
| Answer» B. 8 | |
| 1969. |
Glycolysis cannot occur in the absence of: |
| A. | Ca |
| B. | Mg |
| C. | Mn |
| D. | Co |
| Answer» C. Mn | |
| 1970. |
Allosteric enzymes have allosteric sites for: |
| A. | Inhibition only |
| B. | Activation only |
| C. | Reduction in activation energy |
| D. | Both activation and inhibition |
| Answer» E. | |
| 1971. |
Inulin is a: |
| A. | Lipid |
| B. | Protein |
| C. | Polysaccharide |
| D. | Human insulin |
| Answer» D. Human insulin | |
| 1972. |
Which of the following hormone is a derivative of amino acid? |
| A. | Oestrogen |
| B. | Epinephrine |
| C. | Progestrone |
| D. | Prostaglandin |
| Answer» C. Progestrone | |
| 1973. |
Which is not polysaccharide? |
| A. | Sucrose |
| B. | Starch |
| C. | Glycogen |
| D. | Cellulose |
| Answer» B. Starch | |
| 1974. |
The differences in D and L forms of sugars are based on: |
| A. | spatial arrangement of carbon atom to which the functional group is attached. |
| B. | configuration of H and OH groups around the penultimate carbon. |
| C. | if the plane of polarised light is rotated to left (levo), it is L form; and if shifted to right (dextro), it is D form. |
| D. | special arrangement of H and OH groups at the last carbon atom. |
| Answer» C. if the plane of polarised light is rotated to left (levo), it is L form; and if shifted to right (dextro), it is D form. | |
| 1975. |
Proteins are conducted in the body in the form of: |
| A. | Amino acids |
| B. | Natural proteins |
| C. | Enzymes |
| D. | Nucleic acids |
| Answer» B. Natural proteins | |
| 1976. |
Bond between phosphate and sugar in a nucleotide is: |
| A. | H-bond |
| B. | Covalent bond |
| C. | Phosphodiester bond |
| D. | Sulphide bond |
| Answer» C. Phosphodiester bond | |
| 1977. |
Fats in the body are formed when: |
| A. | glycogen is formed from glucose. |
| B. | sugar level becomes stable in blood. |
| C. | extra glycogen storage in liver and muscles is stopped. |
| D. | All of the above |
| Answer» D. All of the above | |
| 1978. |
Which one of the following vegetable oils has a very low content of PUFA (polyunsaturated fatty acid)? |
| A. | Safflower oil |
| B. | Groundnut oil |
| C. | Coconut oil |
| D. | Mustard oil |
| Answer» D. Mustard oil | |
| 1979. |
Bond present between two nucleosides of a polynucleotide is: |
| A. | Covalent bond |
| B. | Hydrogen bond |
| C. | Phosphodiester bond |
| D. | High energy phosphate bond |
| Answer» D. High energy phosphate bond | |
| 1980. |
Which of the following is a reducing sugar? |
| A. | Sucrose |
| B. | Galactose |
| C. | Gluconic acid |
| D. | p-methyl galactoside |
| Answer» C. Gluconic acid | |
| 1981. |
Maltose is composed of: |
| A. | Glucose & Fructose |
| B. | Glucose & Glycogen |
| C. | Two molecules of Glucose |
| D. | Glycogen & Fructose |
| Answer» D. Glycogen & Fructose | |
| 1982. |
Insulin activates: |
| A. | Lipolysis |
| B. | Ketogenesis |
| C. | Glycogenolysis |
| D. | Glycolysis |
| Answer» E. | |
| 1983. |
Pectin is: |
| A. | Monosaccharides |
| B. | Homopolysaccharides |
| C. | Mucopolysaccharides |
| D. | Heteropolysaccharides |
| Answer» C. Mucopolysaccharides | |
| 1984. |
Which of the following amino acids will give rise to an inhibitory neurotransmitter? |
| A. | Histidine |
| B. | Glutamic acid |
| C. | Omithine |
| D. | Tyrosine |
| Answer» C. Omithine | |
| 1985. |
The set of three elements included in micronutrients is: |
| A. | Na, Cu, Mg |
| B. | Fe, Zn, Cu |
| C. | Fe, K, Ca |
| D. | Mn, Ni, P |
| Answer» C. Fe, K, Ca | |
| 1986. |
All the following statements are true with regard to coconut oil, except: |
| A. | it is composed of medium chain triglycerides. |
| B. | it contains mainly saturated fatty acids. |
| C. | has a higher iodine number than human fat. |
| D. | contains cholesterol. |
| Answer» E. | |
| 1987. |
Match the following nutritional vitamin deficiencies in column-I with the causes/ deficiencies in column-II and choose the correct option. Column-I Column-II A. Kwashiorkar I. Iron B. General anaemia II. Menadione C. Dermatitis III. Protein D. Marasmus IV. Pyridoxine E. Bleeding V. Biotin |
| A. | A-I; B-V; C-II; D-III; E-IV |
| B. | A-V; B-II; C-III; D.IV; E-I |
| C. | A-V; B-III; C-IV; D-I; E-II |
| D. | A-III; B-IV; C-I; D-V; E-II |
| Answer» E. | |
| 1988. |
What is denoted by 1 and 2 in the given graph? |
| A. | 1 - Activation energy with enzyme 2 - Activation energy without enzyme |
| B. | 1 - Activation energy without enzyme 2 - Activation energy with enzyme |
| C. | 1 - Substrate concentration with enzyme 2 - Substrate concentration without enzyme |
| D. | 1 - Substrate concentration without enzyme 2 - Substrate concentration with enzyme |
| Answer» C. 1 - Substrate concentration with enzyme 2 - Substrate concentration without enzyme | |
| 1989. |
The most abundant structural polysaccharide is cellulose and the second largest structural polysaccharide is: |
| A. | Chitin |
| B. | Mannose |
| C. | Glycogen |
| D. | Hyaluronic acid |
| Answer» B. Mannose | |
| 1990. |
tRNA attaches amino acid at its: |
| A. | 3'end |
| B. | 5'end |
| C. | Loop |
| D. | Anticodon |
| Answer» B. 5'end | |
| 1991. |
In DNA, purine nitrogen bases are: |
| A. | Uracil and Guanine |
| B. | Guanine and Adenine |
| C. | Adenine and cytosine |
| D. | Cytosine and Thymine |
| Answer» C. Adenine and cytosine | |
| 1992. |
In protoplasm, the amount of organic compounds, in decreasing order, are: |
| A. | Protein, Lipid, Carbohydrate, Nucleic acid |
| B. | Water, Protein, Lipid, Nucleic acid |
| C. | Carbohydrate, Protein, Lipid, Nucleic acid |
| D. | Protein, Carbohydrate, Nucleic acid, Lipid |
| Answer» B. Water, Protein, Lipid, Nucleic acid | |
| 1993. |
Which of the following disccharide gives two molecules of glucose on hydrolysis? |
| A. | Maltose |
| B. | Lactose |
| C. | Both [a] and [b] |
| D. | Sucrose |
| Answer» B. Lactose | |
| 1994. |
Ligase enzyme is used for: |
| A. | Denaturation of DNA |
| B. | Splitting DNA into small bits |
| C. | Joining bits of DNA |
| D. | Digestion of lipids |
| Answer» D. Digestion of lipids | |
| 1995. |
The ground susbtance of connective tissue is basically composed of: |
| A. | Lipids |
| B. | Phospholipids |
| C. | Monosaccharides |
| D. | Mucopolysaccharides |
| Answer» E. | |
| 1996. |
Which statement is correct for biomolecules? |
| A. | DNA is a polymer of ribonucleotides. |
| B. | All carbohydrates breakdown into glucose. |
| C. | Sequence ofamino acids determines primary protein structure. |
| D. | RNA is single stranded and contains different purine bases other than in DNA. |
| Answer» D. RNA is single stranded and contains different purine bases other than in DNA. | |
| 1997. |
Sucrose is made up of glucose and fructose, which are reducing sugars; but sucrose is a non- reducing sugar, because the linkage involves: |
| A. | 1st carbon of glucose and 2nd carbon of fructose |
| B. | 2nd carbon of glucose and 1st carbon of fructose |
| C. | 1st carbon of glucose and 4th carbon of fructose |
| D. | 4th carbon of glucose and 1st carbon of fructose |
| Answer» B. 2nd carbon of glucose and 1st carbon of fructose | |
| 1998. |
Thymine is: |
| A. | 5-Methyl uracil |
| B. | 4-Methyl uracil |
| C. | 3-Methyl uracil |
| D. | 1-Methyl uracil |
| Answer» B. 4-Methyl uracil | |
| 1999. |
Phospholipid can be neutralised by: |
| A. | Glycerol |
| B. | Fatty acids |
| C. | Choline |
| D. | Aspartic acid |
| Answer» D. Aspartic acid | |
| 2000. |
According to Watson and Crick how many base pairs are there in each turn of the helix of DNA? |
| A. | 10 |
| B. | 11 |
| C. | 12 |
| D. | 13 |
| Answer» B. 11 | |