MCQOPTIONS
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MCQOPTIONS
This section includes 5751 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 2451. |
Ti Plasmid naturally occurs in |
| A. | Agro bacterium |
| B. | Corynebacterium |
| C. | Staphylococcus |
| D. | Vibrio |
| Answer» B. Corynebacterium | |
| 2452. |
Restriction endonucleases are used in genetic engineering because - |
| A. | They can degrade harmful proteins |
| B. | They can join DNA fragments |
| C. | They can cut DNA at specific base sequences |
| D. | They can cut DNA at variable sites |
| Answer» E. | |
| 2453. |
A technique used to make numerous copies of a specific segment of DNA quickly and accurately |
| A. | Translation |
| B. | transcription |
| C. | Ligase chain reaction |
| D. | polymerase chain reaction |
| Answer» C. Ligase chain reaction | |
| 2454. |
The enzymes that cuts specifically recognition sites in the DNA is known as |
| A. | DNA ligase |
| B. | DNA Polymerase |
| C. | Reverse transcriptase |
| D. | Restriction endonuclease |
| Answer» E. | |
| 2455. |
A bioreactor refers to |
| A. | Fermentation tank |
| B. | organisms reacting to stimuli |
| C. | Nuclear reactor for biochemical reactions |
| D. | Tank & biochemical reactions |
| Answer» E. | |
| 2456. |
Extra chromosomal small cirular double stranded DNA molecule in a bacterial cell is stranded DNA molecule in bacterial cell is |
| A. | Plastid |
| B. | Plasmid |
| C. | Mitochondrion |
| D. | Chloroplast |
| Answer» C. Mitochondrion | |
| 2457. |
The enzyme that cleaves DNA at specific sites, producing sticky ends is called |
| A. | Restriction endonuclease |
| B. | Cleaving enzyme |
| C. | Lysing enzyme |
| D. | Exonuclease |
| Answer» E. | |
| 2458. |
Which of the Following is a genetic vector ? |
| A. | Plasmid |
| B. | Phage |
| C. | Cosmid |
| D. | All of these |
| Answer» B. Phage | |
| 2459. |
Which one of the following is releated with genetic engineering ? |
| A. | Mulations |
| B. | Ribosomes |
| C. | Mitochondria |
| D. | Plasmids |
| Answer» E. | |
| 2460. |
Ideal host for the amplification of DNA molecules is |
| A. | Viruses |
| B. | Plants |
| C. | Bacteria |
| D. | Animals |
| Answer» D. Animals | |
| 2461. |
The sticky ends of Fragmented DNA molecules are made up of |
| A. | calcuim salts |
| B. | endo nuclease |
| C. | un paired bases |
| D. | methyl groups |
| Answer» E. | |
| 2462. |
Cells obtained from cancerous tumours are known as - |
| A. | myeloma |
| B. | hybridomas |
| C. | Lymphocytes |
| D. | Monoclonal cells |
| Answer» B. hybridomas | |
| 2463. |
Which of the following are the essential requirements for recombination ? |
| A. | Single stranded DNA |
| B. | DNA ligase |
| C. | DNA Polymerase I |
| D. | All of the above |
| Answer» C. DNA Polymerase I | |
| 2464. |
DNA can be introduced into any cell by |
| A. | Injection |
| B. | being complexed with Ca salts |
| C. | gel electrophoresis |
| D. | being placed along with |
| Answer» B. being complexed with Ca salts | |
| 2465. |
Which of the following is not concerned with biotechnology ? |
| A. | Biogas Production |
| B. | Sewage treatment |
| C. | Biofertilizers |
| D. | Wood seasoning |
| Answer» E. | |
| 2466. |
Hybridomas are employed for |
| A. | synthesis of antibiotic |
| B. | Killing cancer cells |
| C. | synthesis of monoclonal antibodies |
| D. | Production of somatic hybrids |
| Answer» D. Production of somatic hybrids | |
| 2467. |
Many copies of a DNA molecule in a test tube are procurred by |
| A. | Polymerase chain reaction (PCR) |
| B. | Molecular chain reaction (MCR) |
| C. | Ephemeral chain reaction (ECR) |
| D. | All of these |
| Answer» B. Molecular chain reaction (MCR) | |
| 2468. |
Antibiotics inhibits the growth or destroy |
| A. | Bacteria and fungi |
| B. | Bacteria and viruses |
| C. | Bacteria algae and viruses |
| D. | Bacteria, fungi and viruses |
| Answer» E. | |
| 2469. |
Restriction endonuclease is also known as - |
| A. | molecular glue |
| B. | DNA ligase |
| C. | DNA Polymerase |
| D. | molecular scissors |
| Answer» E. | |
| 2470. |
The coagulation of blood occurs due to |
| A. | Destruction of RBC |
| B. | Destruction of WBC |
| C. | Destruction of lymph |
| D. | Destruction of blood platelets |
| Answer» E. | |
| 2471. |
Pathway of myogenic impulse conduction is |
| A. | SAN - AVN - Bundle of His - Purkinje fibers |
| B. | SAN - AVN - Punkinje fibers - Bundle of His |
| C. | AVN - SAN - Bundle of His - Purkinje fibers |
| D. | AVN - Bundle of His - SAN - Pukinje fibers |
| Answer» B. SAN - AVN - Punkinje fibers - Bundle of His | |
| 2472. |
The Plasmid derived from E.Coli is |
| A. | PBR327 |
| B. | PBR322 |
| C. | both a above |
| D. | None |
| Answer» C. both a above | |
| 2473. |
Number of leucocytes is 1 cubic mm |
| A. | 5000 - 8000 |
| B. | 2000 - 3000 |
| C. | 8000 - 13000 |
| D. | 1 - 5 million |
| Answer» B. 2000 - 3000 | |
| 2474. |
A person having both antigen A and antigen B on the surface of RBCs : |
| A. | That person donot possess antibody in serum |
| B. | He can donate the blood to only having AB blood group |
| C. | He is universal recipient |
| D. | All the above |
| Answer» E. | |
| 2475. |
responsible factor XI of blood clotting is |
| A. | Antiheamophilic globulin |
| B. | Plasma thromboplasin antecedent |
| C. | Fibrin stabilizing |
| D. | Hageman factor |
| Answer» C. Fibrin stabilizing | |
| 2476. |
Which one of the common anticoagulant is used for preserving blood ? |
| A. | Sodium hydroxide |
| B. | Sodium chloride |
| C. | Sodium oxalate |
| D. | Sodium bicarbonate |
| Answer» D. Sodium bicarbonate | |
| 2477. |
The systole is |
| A. | The relaxation of auricles |
| B. | The relaxation of ventricles |
| C. | Relaxation of chambers of heat |
| D. | Contraction of heart chambers |
| Answer» D. Contraction of heart chambers | |
| 2478. |
A clot of blood contains |
| A. | Fibrinogen |
| B. | Prothrombin |
| C. | Thrombin |
| D. | Fibrin |
| Answer» E. | |
| 2479. |
Blood group is due to |
| A. | Specific antigen on the surface of WBC |
| B. | Specific antibodies on the surface of RBC |
| C. | Specific antigen of the surface of RBC |
| D. | Type of haemoglobin in blood |
| Answer» C. Specific antigen of the surface of RBC | |
| 2480. |
It decreasing the carrying of oxygen of Haemoglobin |
| A. | Oxygen |
| B. | Carbon dioxide |
| C. | Carbon monoxide |
| D. | Nitrogen |
| Answer» D. Nitrogen | |
| 2481. |
Systolic pressure of heart |
| A. | 80 mm Hg |
| B. | 120 mm Hg |
| C. | 40 mm Hg |
| D. | 320 mm Hg |
| Answer» D. 320 mm Hg | |
| 2482. |
Carbonic anhydrase enzyme present in |
| A. | WBC |
| B. | RBC |
| C. | Blood plasma |
| D. | Platelets |
| Answer» C. Blood plasma | |
| 2483. |
At the time of auriculo ventricular valve shut, the sound is |
| A. | Lubb |
| B. | Dubb |
| C. | Lubb - dubb |
| D. | Dhak - Dhak |
| Answer» B. Dubb | |
| 2484. |
Largest number of white blood corpuscles are |
| A. | Eosinophils |
| B. | Basophils |
| C. | Neutrophils |
| D. | Monocytes |
| Answer» D. Monocytes | |
| 2485. |
Blood plasma is |
| A. | Acidic |
| B. | Basic |
| C. | Neutral |
| D. | Variable |
| Answer» C. Neutral | |
| 2486. |
Leucopenia is the condition where |
| A. | Leuocytes decrease below 5000 per cubic mm of blood |
| B. | Bone marrow is destroyed |
| C. | Total number of lymphocytes decrease from 2 % to 5 % |
| D. | Leucocytes increase above 6000 per cubic mm |
| Answer» B. Bone marrow is destroyed | |
| 2487. |
It shows pulmonary circulation : |
| A. | Left atrium (Oxygenated blood) - Lungs (deoxygenated blood ) - Right atrium |
| B. | Left atrium (deoxygenated blood ) - Lungs (oxygenated blood ) - Right atrium |
| C. | Left atrium (Oxygenated blood )- Lungs (deoxygenated blood )- Left atrium |
| D. | Right atrium (deoxygenated blood) - Lungs (oxygenated blood) - Left atrium |
| Answer» E. | |
| 2488. |
Increase in number of leucocytes beyond normal indicates |
| A. | Anemia |
| B. | Infection |
| C. | Increased defense against pathogen |
| D. | Non formation of RBC |
| Answer» C. Increased defense against pathogen | |
| 2489. |
Heart beat is |
| A. | Induced by hormones |
| B. | Voluntary process |
| C. | Dependent upon the stimulation by nerve complex |
| D. | Auto inducing |
| Answer» E. | |
| 2490. |
Blood is red but RBC are absent in |
| A. | Frog |
| B. | Man |
| C. | Rabbit |
| D. | Earthworm |
| Answer» E. | |
| 2491. |
It is an important method for checking the health related problems of the heart. |
| A. | Xray |
| B. | ECG |
| C. | ELISA |
| D. | CBC |
| Answer» C. ELISA | |
| 2492. |
The valve present at the left auriculo - ventricular aperture is |
| A. | Tricuspid valve |
| B. | Semilunar valve |
| C. | Mitral valve |
| D. | Eustrachian valve |
| Answer» C. Mitral valve | |
| 2493. |
Arteries carry oxygenated blood except |
| A. | Pulmonary |
| B. | Cardiac |
| C. | Hepatic |
| D. | Systemic |
| Answer» B. Cardiac | |
| 2494. |
In disease erythroblastosis foetalis |
| A. | Destroy the baby’s WBCs |
| B. | A baby suffering from atherosclerosis |
| C. | Destroy the baby’s RBCs |
| D. | An increasing in the number of RBCs |
| Answer» D. An increasing in the number of RBCs | |
| 2495. |
The pulse beat is measured by the |
| A. | Artery |
| B. | Capillary |
| C. | Vein |
| D. | None |
| Answer» B. Capillary | |
| 2496. |
Make correct pairs. |
| A. | (P-W-ii), (Q-V-iv), (R-U-ii),(S-T-i) |
| B. | (P-T-ii),(Q-U-iv),(R-V-iii), (S-W-i) |
| C. | (P-W-ii),(Q-V-iii),(R-T-i),(S-U-iv) |
| D. | (P-V-i),(Q-U-iii),(R-W-iv),(S-T-ii) |
| Answer» B. (P-T-ii),(Q-U-iv),(R-V-iii), (S-W-i) | |
| 2497. |
An oval depression called fossa ovalis is seen on |
| A. | Inter atrial septum |
| B. | Inter ventricular septum |
| C. | Right auriculo - ventricular septum |
| D. | Left auriculo - ventricular septum |
| Answer» B. Inter ventricular septum | |
| 2498. |
Which one of the following vein breaks up into capillaries |
| A. | Renal vein |
| B. | Hepatic vein |
| C. | Pelvic vein |
| D. | Pulmonary vein |
| Answer» C. Pelvic vein | |
| 2499. |
, 2000, DPMT-86,MANIPAL-95) |
| A. | Left atrium and left ventricle |
| B. | Left atrium and Right ventricle |
| C. | Right atrium and Left ventricle |
| D. | Right atrium and Right ventricle |
| Answer» B. Left atrium and Right ventricle | |
| 2500. |
Serotonin in the blood |
| A. | Relaxes blood vessels |
| B. | Prevents clotting of the blood |
| C. | Helps in clotting of blood |
| D. | Constricts blood vessels |
| Answer» E. | |