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MCQOPTIONS
This section includes 903 Mcqs, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 401. |
Under normal circumstances, a patient's immune system can overcome bacterial or viral attack but in AIDS victim is |
| A. | succumbed |
| B. | saved |
| C. | exempted |
| D. | electrocuted |
| Answer» B. saved | |
| 402. |
In nutrition ,deamination involves |
| A. | transfer of amino acids to kidneys |
| B. | conversion of amino group to urea |
| C. | conversion of carbon residue to glucose |
| D. | conversion of excess glucose to glycogen |
| Answer» C. conversion of carbon residue to glucose | |
| 403. |
Which is true about sap in root hair cells |
| A. | it has lower water potential |
| B. | enable the osmosis |
| C. | is concentrated in salts and sugars |
| D. | all of above |
| Answer» E. | |
| 404. |
In which category does nicotine (C₁₀H₁₄N₂) lies |
| A. | socially accepted drug |
| B. | abusive drug |
| C. | traditional medicine |
| D. | recent medicinal discover |
| Answer» C. traditional medicine | |
| 405. |
Dry mass is lost through |
| A. | lenticels |
| B. | respiration |
| C. | stomata |
| D. | limiting factor of enzymes |
| Answer» C. stomata | |
| 406. |
Consequences of deforestation includes |
| A. | burning of fossil fuels |
| B. | soil erosion |
| C. | flooding |
| D. | climate changes |
| Answer» B. soil erosion | |
| 407. |
Carboxyhemoglobin is formed if |
| A. | CO₂ is allowed to mix with hemoglobin |
| B. | if CO is allowed to react with hemoglobin |
| C. | if long term exposure to lead and lead poisoning occurs |
| D. | if carbon is allowed to react with hemoglobin |
| Answer» C. if long term exposure to lead and lead poisoning occurs | |
| 408. |
Survival of aquatic organisms only in their environment is an example of |
| A. | high specialization |
| B. | less specialization |
| C. | adaptation |
| D. | metabolism |
| Answer» B. less specialization | |
| 409. |
Blood entering the kidney has |
| A. | more carbon dioxide |
| B. | less carbon dioxide |
| C. | less oxygen |
| D. | more oxygen |
| Answer» C. less oxygen | |
| 410. |
LSD stands for |
| A. | Lysergic ethylaminate |
| B. | Lysergic acid diethylamide |
| C. | Lysergic acid dillusionaminates |
| D. | Lysergic saturated dichloromethane |
| Answer» C. Lysergic acid dillusionaminates | |
| 411. |
Amino acids are assimilated to form new |
| A. | cell walls |
| B. | shoot cells |
| C. | protoplasm |
| D. | cytoplasm |
| Answer» D. cytoplasm | |
| 412. |
Renal artery, renal vein and nerves are connected at |
| A. | ureters |
| B. | urethra |
| C. | hilus |
| D. | medulla |
| Answer» D. medulla | |
| 413. |
Water where fresh and sea water mix is known as |
| A. | brackish water |
| B. | blackish water |
| C. | intermingling water |
| D. | stagnant water |
| Answer» B. blackish water | |
| 414. |
Microorganisms used in biotechnology shall not |
| A. | grow rapidly in cheap culture medium |
| B. | readily manipulated |
| C. | pathogenic |
| D. | all of above |
| Answer» D. all of above | |
| 415. |
An inversion of smoke escape occurs if |
| A. | layer of warm air continually replaces the cold air |
| B. | layer of warm air acts like a lid and does not allow the cold air and smoke to escape |
| C. | hot air and smoke react to form smog |
| D. | cold air acts as a lid and prevents escape of smoke and sulphur dioxide |
| Answer» C. hot air and smoke react to form smog | |
| 416. |
Increased melting of ice glaciers may be a result of |
| A. | greenhouse effect |
| B. | smog formation |
| C. | sun getting closer to the Earth every year |
| D. | moon moving away causing more tidal activities |
| Answer» B. smog formation | |
| 417. |
Necrosis due to blockage by embolus leads to |
| A. | hypertension |
| B. | cerebral infarction |
| C. | myocardial infarction |
| D. | stroke |
| Answer» D. stroke | |
| 418. |
In anaerobic respiration (without O₂) in mammals, the wastes are |
| A. | water |
| B. | ethanol |
| C. | lactic acid |
| D. | carbon dioxide |
| Answer» D. carbon dioxide | |
| 419. |
Platelets have no pigment as well as no |
| A. | cell wall |
| B. | nucleus |
| C. | cytoplasm |
| D. | cell membrane |
| Answer» C. cytoplasm | |
| 420. |
When needed glycogen (C₆H₁₀O₅)n can be easily hydrolyzed to |
| A. | starch |
| B. | galactose |
| C. | glucose |
| D. | lactose |
| Answer» D. lactose | |
| 421. |
Death of an organism may be due to stop or breakdown of |
| A. | transparent systems |
| B. | open systems |
| C. | hybrid systems |
| D. | closed systems |
| Answer» C. hybrid systems | |
| 422. |
Rate of heartbeat and blood pressures increases due to |
| A. | tar |
| B. | nicotine |
| C. | cocaine |
| D. | morphine |
| Answer» C. cocaine | |
| 423. |
Selective reabsorption does not allow to retain |
| A. | water |
| B. | nitrogenous wastes |
| C. | proteins |
| D. | carbohydrates |
| Answer» C. proteins | |
| 424. |
At some point, a food chain always ends upon |
| A. | animals |
| B. | microorganisms |
| C. | plants |
| D. | humans |
| Answer» D. humans | |
| 425. |
C₁₂H₂₂O₁₁ is the general formula of |
| A. | monosaccharide |
| B. | polysaccharides |
| C. | disaccharides |
| D. | trisaccharide |
| Answer» D. trisaccharide | |
| 426. |
In biology, living things are part of |
| A. | open systems |
| B. | closed systems |
| C. | partially open systems |
| D. | dark systems |
| Answer» B. closed systems | |
| 427. |
Highest energy value is provided by |
| A. | lipids |
| B. | fats |
| C. | starch |
| D. | glucose |
| Answer» C. starch | |
| 428. |
Movement of water molecules from an area of higher concentration to an area of lower concentration through a semi-permeable membrane is process of |
| A. | diffusion |
| B. | osmosis |
| C. | reverse osmosis |
| D. | active transport |
| Answer» C. reverse osmosis | |
| 429. |
Main two components of blood of human are |
| A. | plasma and cells |
| B. | plasma and bones |
| C. | lungs and cells |
| D. | heart and blood vessels |
| Answer» B. plasma and bones | |
| 430. |
In respiration oxygen debt refers to the amount of |
| A. | oxygen required for oxidation |
| B. | oxygen lent to other muscles |
| C. | oxygen required to oxidize lactic acid |
| D. | oxygen required in rigorous running and physical activities |
| Answer» D. oxygen required in rigorous running and physical activities | |
| 431. |
Rich source of vitamins include |
| A. | fresh raw vegetables |
| B. | fresh boiled vegetables |
| C. | fried potatoes |
| D. | processed cheese |
| Answer» B. fresh boiled vegetables | |
| 432. |
Application of biotechnology procedures in medical processes is classified as |
| A. | white biotechnology |
| B. | red biotechnology |
| C. | blue biotechnology |
| D. | green biotechnology |
| Answer» C. blue biotechnology | |
| 433. |
Of the 100 cm³ urine, approx. nitrogenous wastes make up to |
| A. | 1.8 g |
| B. | 2.2 g |
| C. | 2.0 g |
| D. | 0.2 g |
| Answer» E. | |
| 434. |
Condensation reaction always results in the formation of complex sugar (disaccharide or polysaccharide) and |
| A. | amino acids |
| B. | lipids |
| C. | water |
| D. | maltose |
| Answer» D. maltose | |
| 435. |
Simplest carbohydrates (CₙH₂ₘOₘ) are |
| A. | glucose |
| B. | sugars |
| C. | peptones |
| D. | galactose |
| Answer» C. peptones | |
| 436. |
Due to osmotic pressure in marine fish, kidneys |
| A. | excretes salts |
| B. | excretes small amount of water |
| C. | produce concentrated urine |
| D. | all of above |
| Answer» E. | |
| 437. |
Temperature and concentration of salts and water is retained in |
| A. | phagocytosis |
| B. | heamolytic |
| C. | homeostasis |
| D. | fluid retention |
| Answer» D. fluid retention | |
| 438. |
Due to smoking, narrow arteries bringing blood to fetus cause |
| A. | child born prematurely |
| B. | reduction in amount of food reaching the fetus |
| C. | brain development affected |
| D. | risk of miscarriage |
| Answer» C. brain development affected | |
| 439. |
Sources of vitamin may include |
| A. | plant foods |
| B. | microorganisms living in the gut |
| C. | meat and eggs |
| D. | fish |
| Answer» D. fish | |
| 440. |
If water containing DDT (dichloro-diphenyl-trichloroethane: C₁₄H₉Cl₅) is fed upon by cattle, it will |
| A. | get stored in the liver |
| B. | get stored in the fatty tissues of animals |
| C. | be excreted out with urine |
| D. | get stored in the muscle fibers |
| Answer» C. be excreted out with urine | |
| 441. |
Function of meninges is to protect |
| A. | brain |
| B. | heart |
| C. | digestive organs |
| D. | respiratory system |
| Answer» B. heart | |
| 442. |
Damage to nervous system and limb paralysis is caused due to |
| A. | rickets |
| B. | beriberi |
| C. | diabetes |
| D. | scurvy |
| Answer» C. diabetes | |
| 443. |
Fats acts as a solvent for |
| A. | protoplasm |
| B. | fat-soluble vitamins |
| C. | insulating materials |
| D. | mineral ions (Ca⁺², Na⁺, K+, Mg⁺²) |
| Answer» C. insulating materials | |
| 444. |
Serum which is produced by antitoxins in case of a snake bite venom is called |
| A. | anti-sera |
| B. | anti-venom |
| C. | anti-venom serum |
| D. | anti-serum venom |
| Answer» D. anti-serum venom | |
| 445. |
Forest reserves can be protected through all measures but, |
| A. | laws inhibiting tree felling |
| B. | laws allowing tree felling |
| C. | prohibition of hunting |
| D. | human population control |
| Answer» C. prohibition of hunting | |
| 446. |
During anabolic (building up) process the |
| A. | plant stops respiration |
| B. | oxygen is used up and carbon dioxide is produced |
| C. | building up of carbohydrates occur |
| D. | breakdown of carbohydrates occur |
| Answer» D. breakdown of carbohydrates occur | |
| 447. |
If any artery which is supplying blood to brain leaks or discharges blood burst, such artery is called |
| A. | hemorrhage |
| B. | stroke |
| C. | hypertension |
| D. | myocardial infarction |
| Answer» B. stroke | |
| 448. |
System of adjacent cell walls present throughout plant roots is |
| A. | cellular system |
| B. | apoplast pathway |
| C. | symplast pathway |
| D. | vacuolar pathway |
| Answer» C. symplast pathway | |
| 449. |
Fats are present in the protoplasm especially in the |
| A. | cell sap |
| B. | protoplasmic membranes |
| C. | cytoplasm |
| D. | centrioles |
| Answer» C. cytoplasm | |
| 450. |
Dead algae and plants are decomposed by |
| A. | bacteria |
| B. | fungi |
| C. | virus |
| D. | detritivores |
| Answer» B. fungi | |