MCQOPTIONS
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MCQOPTIONS
This section includes 1212 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 501. |
Ribonucleo-protein particles are the name of__________? |
| A. | DNA |
| B. | Nucleus |
| C. | Eukaryotic ribosomes |
| D. | RNA |
| Answer» D. RNA | |
| 502. |
Reverse transcriptase is present in____________? |
| A. | All RNA viruses |
| B. | All DNA viruses |
| C. | All retroviruses |
| D. | All viruses |
| Answer» D. All viruses | |
| 503. |
Respiratory distress syndrome is common especially for infants with a__________? |
| A. | Less than 7 month |
| B. | Less than 8 month |
| C. | Less than 9 month |
| D. | More than 9 month |
| Answer» B. Less than 8 month | |
| 504. |
___________ respiration is the process by which cell utilized oxygen and produces CO2 ? |
| A. | Cellular |
| B. | Organismic |
| C. | Both of these |
| D. | None of these |
| Answer» B. Organismic | |
| 505. |
___________ respiration is directly involved in the production of energy, necessary for all living activities? |
| A. | Organismic |
| B. | Cellular |
| C. | Both of these |
| D. | None of these |
| Answer» C. Both of these | |
| 506. |
Resolution power of a compound microscope is___________? |
| A. | 2.0 ?m |
| B. | 2-4 A |
| C. | 24 ?m |
| D. | 24 A |
| Answer» B. 2-4 A | |
| 507. |
Removal or degradation of environmental pollutants or toxic materials by living organisms is called__________? |
| A. | Integrated disease management |
| B. | Hydroponic culture technique |
| C. | Pasteurization |
| D. | Bioremediation |
| Answer» E. | |
| 508. |
Release of the ovum from ovary is called__________? |
| A. | fertilization |
| B. | ovulation |
| C. | implantation |
| D. | none of these |
| Answer» C. implantation | |
| 509. |
Reflex actions below the neck are under control of____________? |
| A. | Brain |
| B. | Spinal cord |
| C. | Hypothalamus |
| D. | none of these |
| Answer» C. Hypothalamus | |
| 510. |
Reduction in photosynthesis is of____________? |
| A. | O2 |
| B. | CO2 |
| C. | H2O |
| D. | light energy |
| Answer» C. H2O | |
| 511. |
Red to orange pigments are_____________? |
| A. | Carotenes |
| B. | Carotenoids |
| C. | Xanthophylls |
| D. | Chlorophyll |
| Answer» B. Carotenoids | |
| 512. |
Receptors for hearing come under heading of___________? |
| A. | Chemical |
| B. | Mechanical |
| C. | Photo |
| D. | Nociceptors |
| Answer» C. Photo | |
| 513. |
Reactions in which simple substances are combined to form complex substances are called_____________? |
| A. | Metabolic reactions |
| B. | Catabolic reactions |
| C. | Anabolic reactions |
| D. | None of these |
| Answer» D. None of these | |
| 514. |
Rapid movement of leaves of mimosa on touching is an example of _____________? |
| A. | Turgor movement |
| B. | Nastic movement |
| C. | Tropic movements |
| D. | Growth movement |
| Answer» B. Nastic movement | |
| 515. |
Rapid growth at exponential ration occurs in which phase of bacterial growth: |
| A. | Lag phase |
| B. | Log phase |
| C. | Stationary phase |
| D. | Death / decline phase |
| Answer» C. Stationary phase | |
| 516. |
Radiolarians belong to which of the following protozoal group____________? |
| A. | Zooflagellates |
| B. | Actinopods |
| C. | Foraminifera |
| D. | Apicomplexans |
| Answer» C. Foraminifera | |
| 517. |
Quantitative study of energy relationships in biological systems obeys. |
| A. | Bioenergetics |
| B. | Laws of thermodynamics |
| C. | Laws of thermo chemistry |
| D. | Laws of chemical energetic |
| Answer» C. Laws of thermo chemistry | |
| 518. |
QRS complex represents____________? |
| A. | Atrial systole |
| B. | Ventricular systole |
| C. | Atrial diastole |
| D. | Ventricular diastole |
| Answer» C. Atrial diastole | |
| 519. |
Purple non-sulphur bacteria is an example of___________? |
| A. | Heterotrophic bacteria |
| B. | Chemosynthetic bacteria |
| C. | Photosynthetic bacteria |
| D. | Saprotrophic bacteria |
| Answer» D. Saprotrophic bacteria | |
| 520. |
Purines and pyrimidines are in equal ration in DNA. It was indicated by_______________? |
| A. | F.Miescher |
| B. | Chargaff |
| C. | Watson & Crick |
| D. | Harshay & Chase |
| Answer» C. Watson & Crick | |
| 521. |
Purine and pyrimidine metabolism results in production of____________? |
| A. | Creatinine |
| B. | Trimethyamine oxide |
| C. | Xanthine |
| D. | None of these |
| Answer» D. None of these | |
| 522. |
Pulling upward of water and dissolved minerals towards the leaves through the xylem tissue is called__________? |
| A. | Transpiration pull |
| B. | Root pressure |
| C. | Ascent of sap |
| D. | All of these |
| Answer» B. Root pressure | |
| 523. |
Puccinia commonly destroys______________? |
| A. | Corn |
| B. | Tomato |
| C. | Dodder |
| D. | Wheat |
| Answer» E. | |
| 524. |
Puccinia is a parasitic___________? |
| A. | Plant |
| B. | Fungus |
| C. | Animal |
| D. | Algae |
| Answer» C. Animal | |
| 525. |
PS I has chlorophyll a molecule which absorbs maximum light of _________ nm ? |
| A. | 600 |
| B. | 650 |
| C. | 680 |
| D. | 700 |
| Answer» E. | |
| 526. |
Pseudocoelem develops from____________? |
| A. | Blastopore |
| B. | Plastoquinone |
| C. | Blastocoel |
| D. | Splitting of mesoderm |
| Answer» D. Splitting of mesoderm | |
| 527. |
Psedudocoelom is character of____________? |
| A. | Coelenterates |
| B. | Platyhelminthes |
| C. | Aschelminthes |
| D. | Annelids |
| Answer» D. Annelids | |
| 528. |
Protonephridia are present in____________? |
| A. | Round worms |
| B. | Flateworm |
| C. | Tape worms |
| D. | Segmented worms |
| Answer» C. Tape worms | |
| 529. |
Protonema is___________? |
| A. | Thallus like |
| B. | Algae like |
| C. | Fungus like |
| D. | Plant like |
| Answer» C. Fungus like | |
| 530. |
Proteins comprise of ___________% of the total dry weight of a cell? |
| A. | 40% |
| B. | 50% |
| C. | 60% |
| D. | 70% |
| Answer» C. 60% | |
| 531. |
Proteins are made from amino acids by the process of ______________? |
| A. | Hydrolysis |
| B. | Pinocytosis |
| C. | Dehydration synthesis |
| D. | Active transport |
| Answer» D. Active transport | |
| 532. |
Proteins are polymers of___________? |
| A. | Fatty acids |
| B. | Isoprenoid units |
| C. | Amino acids |
| D. | Nucleotides |
| Answer» D. Nucleotides | |
| 533. |
Proteins and lipids are converted into glycolipids and glycoproteins by adding carbohydrates by___________? |
| A. | Ribosomes |
| B. | Cytoplasm |
| C. | Golgi apparatus |
| D. | Endoplasmic reticulum |
| Answer» D. Endoplasmic reticulum | |
| 534. |
Protein which acts as hormone is__________? |
| A. | Casein |
| B. | Trypsin |
| C. | Oxytocin |
| D. | Keratin |
| Answer» D. Keratin | |
| 535. |
Protein subunits of capsid is called the capsomeres is a characteristic of each virus. Their number in Herpes virus is__________? |
| A. | 100 |
| B. | 152 |
| C. | 162 |
| D. | 172 |
| Answer» D. 172 | |
| 536. |
Protein factory is___________? |
| A. | nucleus |
| B. | ribosome |
| C. | golgi complex |
| D. | centriole |
| Answer» C. golgi complex | |
| 537. |
Protein coasts of viruses are synthesized in____________? |
| A. | Lytic cycle |
| B. | Lysogenic cycle |
| C. | Both a & b |
| D. | All of these |
| Answer» B. Lysogenic cycle | |
| 538. |
Protein coat the capsid of adenovirus is________________? |
| A. | Surrounded by genome |
| B. | Surrounding genome |
| C. | Surrounding the envelope |
| D. | Both B and C |
| Answer» C. Surrounding the envelope | |
| 539. |
prokaryotic and eukaryotic are two types of___________? |
| A. | cells |
| B. | tissues |
| C. | organs |
| D. | organisms |
| Answer» B. tissues | |
| 540. |
Production of two types of spores is known as________________? |
| A. | Heterospory |
| B. | Homospory |
| C. | Heterogamy |
| D. | Gamospory |
| Answer» B. Homospory | |
| 541. |
Production of sweat and sebum is related with ? |
| A. | Skin |
| B. | Liver |
| C. | Lungs |
| D. | GIT |
| Answer» B. Liver | |
| 542. |
Production of pyrogens is a __________ phenomenon? |
| A. | Protective |
| B. | Destructive |
| C. | Constructive |
| D. | Aggressive |
| Answer» B. Destructive | |
| 543. |
Production of genetically identical copies of organisms/cells by asexula reproduction is called ? |
| A. | Mitosis |
| B. | Replication |
| C. | Cloning |
| D. | Biological control |
| Answer» D. Biological control | |
| 544. |
Production of genetically identical copies of organisms/cells by asexual reproduction is called__________? |
| A. | Mitosis |
| B. | Replication |
| C. | Cloning |
| D. | Biological control |
| Answer» D. Biological control | |
| 545. |
Primary structure of proteins determines__________? |
| A. | Number of polypeptide chains involved |
| B. | Bending of polypeptide chains |
| C. | Amino acid sequence |
| D. | Coiling of polypeptide chains |
| Answer» D. Coiling of polypeptide chains | |
| 546. |
Pressure flow theory was proposed by_________? |
| A. | H-Van Mohl |
| B. | Dixon |
| C. | Vander wall |
| D. | Earnst Munch |
| Answer» E. | |
| 547. |
Prechordates is another name used for___________? |
| A. | Echinoderms |
| B. | Hemichordates |
| C. | Vertebrates |
| D. | Chordates |
| Answer» C. Vertebrates | |
| 548. |
Pox viruses are_________? |
| A. | RNA non-enveloped |
| B. | RNA enveloped |
| C. | DNA non-enveloped |
| D. | DNA enveloped |
| Answer» E. | |
| 549. |
___________ potential is the measure of the change in water potential of a system due to the presence of solute molecules? |
| A. | Osmotic |
| B. | Pressure |
| C. | Both of these |
| D. | None of these |
| Answer» B. Pressure | |
| 550. |
Porifera range in size from__________? |
| A. | Few millimeter wide to more than one meter tall |
| B. | Few centimeter wide to more than one meter tall |
| C. | Few decimeter wide to more than one meter tall |
| D. | One meter wide to more than millimeter tall |
| Answer» B. Few centimeter wide to more than one meter tall | |