MCQOPTIONS
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MCQOPTIONS
This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 13301. |
Mitotic stages are not observed in ________. |
| A. | Cosmarium |
| B. | E.coli |
| C. | Saccharomyces |
| D. | Chlorella |
| Answer» C. Saccharomyces | |
| 13302. |
A person is suffering from frequent episodes of nasal discharge nasal congestion, reddening of eyes and watery eyes. These are the symptoms of |
| A. | Cyanosis |
| B. | Bronchial carcinoma |
| C. | Bronchitis |
| D. | Rhinitis |
| Answer» E. | |
| 13303. |
More men suffer from colour blindness than women because |
| A. | women are more resistant to disease than men |
| B. | the male sex hormone testosterone cause the disease |
| C. | the colour blind gene is carried on the ‘Y’ chromosome |
| D. | men are hemizygous and one defective gene is enough to make them colour blind |
| Answer» E. | |
| 13304. |
In genetic fingerprinting, the ‘probe’ refers to _______. |
| A. | a radioactively labelled single stranded RNA molecule. |
| B. | a radioactively labelled single stranded DNA molecule. |
| C. | a radioactively labelled double stranded DNA molecule. |
| D. | a radioactively labelled double stranded RNA molecule. |
| Answer» C. a radioactively labelled double stranded DNA molecule. | |
| 13305. |
A man is admitted to a hospital. He is suffering from an abnormally low body temperature, loss of appetite and extreme thirst. His brain scan would probably show a tumor in ___ . |
| A. | Cerebellum |
| B. | Hypothalamus |
| C. | Pons |
| D. | Medulla Oblongata |
| Answer» C. Pons | |
| 13306. |
In the absence of enterokinase, the digestion of _______ would be affected in our intestine. |
| A. | Albumin |
| B. | Maltose |
| C. | Starch |
| D. | Amino acid |
| Answer» B. Maltose | |
| 13307. |
A RBC and a plant cell (with thick cell wall) are placed in distilled water. The solute concentration is the same in both the cells. What changes would be observed in them? |
| A. | The RBC would increase in size and burst while the plant cell would remain about the same size. |
| B. | The plant cell would increase in size and burst while the RBC would remain about the same size. |
| C. | Both plant cell and RBC would decrease in size and collapse. |
| D. | Both plant cell and RBC would not undergo any change. |
| Answer» B. The plant cell would increase in size and burst while the RBC would remain about the same size. | |
| 13308. |
In the absence of acrosome, the sperm _______. |
| A. | cannot get energy |
| B. | cannot penetrate the egg |
| C. | cannot swim |
| D. | cannot get food |
| Answer» C. cannot swim | |
| 13309. |
In which stage of the first meiotic division two sister chromatids are formed ? |
| A. | Diplotene |
| B. | Pachytene |
| C. | Zygotene |
| D. | Leptotene |
| Answer» C. Zygotene | |
| 13310. |
In crop improvement programmes, virus-free clones can be obtained through |
| A. | Hybridization |
| B. | Embryo culture |
| C. | Shoot apex culture |
| D. | Grafting |
| Answer» D. Grafting | |
| 13311. |
In C4 pathway, the CO2 fixation in mesophyll cells is carried out by the enzyme _______. |
| A. | Pyruvate decarboxylase |
| B. | Rubisco |
| C. | PEP carboxylase |
| D. | Pyruvate dehydrogenase |
| Answer» D. Pyruvate dehydrogenase | |
| 13312. |
In a tissue culture media, the resource of the phytohormone is |
| A. | Coconut milk |
| B. | Agar agar |
| C. | Glucose |
| D. | Micronutrients |
| Answer» B. Agar agar | |
| 13313. |
In an experiment demonstrating the evolution of oxygen in Hydrilla, Sodium bicarbonate is added to water in the experimental set-up. What would happen if all other conditions are favourable? |
| A. | Amount of oxygen evolved increases as the availability of carbon dioxide increases. |
| B. | Amount of oxygen evolved decreases as the availability of carbon dioxide increases. |
| C. | Amount of oxygen evolved increases as carbon dioxide in Water is absorbed by sodium bicarbonate. |
| D. | Amount of oxygen evolved decreases as carbon dioxide in water is absorbed by sodium bicarbonate. |
| Answer» B. Amount of oxygen evolved decreases as the availability of carbon dioxide increases. | |
| 13314. |
In genetic code, 61 codons code for 20 different types of amino acids. This is called |
| A. | Commaless |
| B. | Degeneracy |
| C. | Colinearity |
| D. | Nonambiguity |
| Answer» C. Colinearity | |
| 13315. |
In a typical heart, if EDV is 120 ml of blood and ESV is 50 ml of blood, the stroke volume (SV) is |
| A. | 120 + 50 = 170 ml |
| B. | 120 – 50 = 70 ml |
| C. | 120 ´ 50 = 6000 ml |
| D. | 120 ÷ 50 = 2.4 ml |
| Answer» C. 120 ´ 50 = 6000 ml | |
| 13316. |
In a typical Mendelian cross which is a dihybrid cross, one parent is homozygous for both dominant traits and another parent is homozygous for both recessive traits. In the f2 generation, both parental combinations and recombinations appear. The phenotypic ratio of parental combinations to recombinations is ________. |
| A. | 15 : 1 |
| B. | 12 : 4 |
| C. | 10 : 6 |
| D. | 9 : 7 |
| Answer» D. 9 : 7 | |
| 13317. |
Which one of the following species of earthworm is NOT recommended for vermicomposting? |
| A. | Perionyx excavatus |
| B. | Eudrilus eugeniae |
| C. | Eisenia fetidae |
| D. | Pheretima Posthuma |
| Answer» E. | |
| 13318. |
Which one of the following synthetic growth regulators is used to promote synchronized flowering in pineapple? |
| A. | Benzyl Aminopurine |
| B. | 2-chloroethylphosphonic acid |
| C. | Phenylmercuric Acetate |
| D. | None of these |
| Answer» C. Phenylmercuric Acetate | |
| 13319. |
Which one of the following theories on the origin of life is mostly accepted? |
| A. | Chemical origin |
| B. | Steady state |
| C. | Special creation |
| D. | Panspermia |
| Answer» B. Steady state | |
| 13320. |
Which one of the following statements about the events of noncyclic photophosphorylation is NOT correct? |
| A. | ATP and NADPH are not produced. |
| B. | Photolysis of water takes place. |
| C. | O2 is released. |
| D. | None of these |
| Answer» B. Photolysis of water takes place. | |
| 13321. |
Which one of the following statement is NOT correct?During Protein synthesis, _______. |
| A. | Cysteine is coded by UGU and UGC codons. |
| B. | UAA codon codes for Lysine. |
| C. | Tyrosine is coded by UAU and UAC codons. |
| D. | UGG codon codes for Tryptophan. |
| Answer» C. Tyrosine is coded by UAU and UAC codons. | |
| 13322. |
Which one of the following reactions is an example of oxidative decarboxylation? |
| A. | Conversion of citrate to isocitrate |
| B. | Conversion of private to acetyl CoA |
| C. | Conversion of succinate to fumerate |
| D. | Conversion of fumerate to malate |
| Answer» C. Conversion of succinate to fumerate | |
| 13323. |
Which stage of malarial parasite is infective to man? |
| A. | Sporozoite |
| B. | Gametocyte |
| C. | Merozoite |
| D. | Cryptomerozoite |
| Answer» B. Gametocyte | |
| 13324. |
Which one of the following triplet codons is a chain termination codon? |
| A. | UGU |
| B. | UUG |
| C. | UAG |
| D. | AAU |
| Answer» D. AAU | |
| 13325. |
Which substance is in higher concentration in blood than in glomerular filtrate? |
| A. | Glucose |
| B. | urea |
| C. | Plasma proteins |
| D. | water |
| Answer» D. water | |
| 13326. |
Which the following is a gastrointestinal hormone? |
| A. | Enterokinase |
| B. | Prolactin |
| C. | GH |
| D. | FSH |
| Answer» B. Prolactin | |
| 13327. |
Which statement about photosynthesis is false? |
| A. | Photosynthesis is a redox process in which water is oxidised and carbon dioxide is reduced. |
| B. | The enzymes required for carbon fixation are located only in the grana of chloroplasts. |
| C. | In green plants, both PS I and PS II are required for the formation of NADPH + H+. |
| D. | The electron carriers involved in photophosphorylation are located on the thylakoid membranes |
| Answer» C. In green plants, both PS I and PS II are required for the formation of NADPH + H+. | |
| 13328. |
Some of the steps involved in the production of Humulin are given below. Choose the correct sequence.i) Synthesis of gene (DNA) for human insulin artificially.ii) Culturing recombinant E.c0li in bioreactors.iii) Purification of humulin.iv) Insertion of human insulin gene into plasmid.v) Introduction of recombinant plasmid into E.coli.vi) Extraction of recombinant gene product from E.coli. |
| A. | i, iv, v, ii, vi, iii |
| B. | iii, v, ii, i, vi, iv |
| C. | ii, i, iv, iii. v, vi |
| D. | i, iii, v, vi, ii, iv |
| Answer» B. iii, v, ii, i, vi, iv | |
| 13329. |
With reference to enzymes, which one of the following statements is true? |
| A. | Holoenzyme = Apoenzyme + Coenzyme |
| B. | Apoenzyme = Holoenzyme + Coenzyme |
| C. | Coenzyme = Apoenzyme + Holoenzyme |
| D. | Holoenzyme = Coenzyme – Apoenzyme |
| Answer» B. Apoenzyme = Holoenzyme + Coenzyme | |
| 13330. |
With reference to enzymes, turnover number means _______. |
| A. | the number of substrate molecules that a molecule of an enzyme converts into products per hour. |
| B. | the number of substrate molecules that a molecule of an enzyme converts into products per second. |
| C. | the number of substrate molecules that a molecule of an enzyme converts into products per day. |
| D. | the number of substrate molecules that a molecule of an enzyme converts into products per minute. |
| Answer» E. | |
| 13331. |
Who wrote the famous book ‘Origin of Species’? |
| A. | De Vries |
| B. | Mendel |
| C. | Darwin |
| D. | Lamarck |
| Answer» D. Lamarck | |
| 13332. |
Pyramid of energy in ecosystems is |
| A. | Mostly upright |
| B. | Always upright |
| C. | Always inverted |
| D. | Mostly inverted |
| Answer» C. Always inverted | |
| 13333. |
A large quantity of fluid is filtered every day by the nephrons in the kidneys. Only about 1% of it is excreted as urine. The remaining 99% of the filtrate |
| A. | gets collected in the renal pelvis |
| B. | is reabsorbed into the blood |
| C. | is lost as sweat |
| D. | is stored in the urinary bladder |
| Answer» C. is lost as sweat | |
| 13334. |
Ptyalin is inactivated by a component of gastric juice known as |
| A. | HCl |
| B. | Rennin |
| C. | Pepsin |
| D. | Mucus |
| Answer» B. Rennin | |
| 13335. |
Silk produced by Antheraea mylitta is also called ? |
| A. | Tassar silk |
| B. | Muga silk |
| C. | Eri silk |
| D. | Mysore silk |
| Answer» B. Muga silk | |
| 13336. |
Read the following statements A and B.A: Many organs of aquatic plants float in water.B: Large air gaps are present in the collenchyma tissues of lotus leaf.Select the correct answer. |
| A. | Statement B is correct and A is wrong |
| B. | Statements A and B both are correct |
| C. | Statements A and B both are wrong |
| D. | Statement A is correct and B is wrong |
| Answer» E. | |
| 13337. |
Structural element of Chromatin is |
| A. | Acid protein and DNA |
| B. | Histone |
| C. | Nucleosomes |
| D. | Nuclear matrix |
| Answer» D. Nuclear matrix | |
| 13338. |
Ribose sugar is present in |
| A. | RNA polymerase. RNA and ATP |
| B. | RNA and ATP |
| C. | RNA polymerase and ATP |
| D. | RNA only |
| Answer» C. RNA polymerase and ATP | |
| 13339. |
Stoma opens when |
| A. | Guard cells swell by endosmosis due to efflux of potassium ions. |
| B. | Guard cells swell by endosmosis due to influx of hydrogen ions (protons) |
| C. | Guard cells swell due to an increase in their Water potential. |
| D. | Guard cells swell due to a decrease in their water potential. |
| Answer» D. Guard cells swell due to a decrease in their water potential. | |
| 13340. |
Restriction enzymes are used to cut |
| A. | Single stranded DNA |
| B. | Double stranded RNA |
| C. | Double stranded DNA |
| D. | Single stranded RNA |
| Answer» D. Single stranded RNA | |
| 13341. |
The amount of CSF in the cranial cavity? |
| A. | 500 ml |
| B. | 140 ml |
| C. | 1 litre |
| D. | 1.5 ml |
| Answer» C. 1 litre | |
| 13342. |
Sporopollenin, a chemical substance is found in _______. |
| A. | Exine of pollen grain |
| B. | Intine of pollen grain |
| C. | Tapetum of anther |
| D. | Endothecium of anther |
| Answer» B. Intine of pollen grain | |
| 13343. |
Succus entericus is secreted by _______. |
| A. | Brunner’s glands |
| B. | Auerbach’s plexus |
| C. | Crypts of Lieberkuhn |
| D. | Peyers patches |
| Answer» D. Peyers patches | |
| 13344. |
Structural lipids of cell membrane are? |
| A. | Simple lipid |
| B. | Chromolipids |
| C. | Steroid |
| D. | Phospholipids |
| Answer» E. | |
| 13345. |
Spindle fibre is made up of |
| A. | Flagellin |
| B. | Tubulin |
| C. | Humulin |
| D. | Intermediate filament |
| Answer» C. Humulin | |
| 13346. |
The gene of sickle cell anaemia is inherited by? |
| A. | Sex chromosomes |
| B. | Bone cells |
| C. | Autosomes |
| D. | Blood cells |
| Answer» D. Blood cells | |
| 13347. |
The Gastrin is secreted from? |
| A. | Stomach |
| B. | Intestine |
| C. | Rectum |
| D. | Pancreas |
| Answer» B. Intestine | |
| 13348. |
The cause of cretinism is? |
| A. | Hypothyroidism |
| B. | Hypoparathyroidism |
| C. | Hyperthyroidism |
| D. | Hyperparathyroidism |
| Answer» B. Hypoparathyroidism | |
| 13349. |
The anterior V-spot in microfilaria of Wuchereria represents? |
| A. | Excretory system |
| B. | Reproductive |
| C. | Cervical papilla |
| D. | Nerve ring |
| Answer» B. Reproductive | |
| 13350. |
The force responsible for upward conduction of water against gravity comes from? |
| A. | photosynthesis |
| B. | transpiration |
| C. | translocation |
| D. | respiration |
| Answer» C. translocation | |