MCQOPTIONS
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MCQOPTIONS
This section includes 1275 Mcqs, each offering curated multiple-choice questions to sharpen your Biology Mcqs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which is NOT an example of a microbial symbiosis? |
| A. | bacteria in the human colon |
| B. | tapeworm in the cow intestine |
| C. | bacteria passing through the placenta |
| D. | protozoans found within termites |
| Answer» D. protozoans found within termites | |
| 2. |
All chromosomes other than ‘sex’ chromosome are called __________ ? |
| A. | Autosomes |
| B. | Acentric chromosomes |
| C. | Metacentric Chromosomes |
| D. | Telocentric chromosomes |
| Answer» B. Acentric chromosomes | |
| 3. |
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 | |
| 4. |
In osmosis water molecules move from area of _____________ through semipermeable memberane? |
| A. | Higher solute concentration to lower solute concentration |
| B. | Lower solute concentration to higher solute concentration |
| C. | Lower solvent concentration to higher solvent concentration |
| D. | All of these |
| Answer» C. Lower solvent concentration to higher solvent concentration | |
| 5. |
The system well developed in the acoelomate is___________? |
| A. | Excretory system |
| B. | Nervous system |
| C. | Transport system |
| D. | All of these |
| Answer» E. | |
| 6. |
Most of the marine invertebrates are__________? |
| A. | Osmoconformers |
| B. | Osmoregulators |
| C. | Both depend upon the concentration of sea water |
| D. | None of these |
| Answer» B. Osmoregulators | |
| 7. |
Stamens are not usually pendulous in plants pollinated by __________ ? |
| A. | Wind |
| B. | Insects |
| C. | Water |
| D. | Rain |
| Answer» C. Water | |
| 8. |
Kind of respiration through which skeletal muscles of human body gets the energy is ________ ? |
| A. | Acidic respiration |
| B. | Anaerobic respiration |
| C. | Aerobic respiration |
| D. | Nitrogenous respiration |
| Answer» C. Aerobic respiration | |
| 9. |
Which of the following vitamins is useful in ostcoimalacia? |
| A. | Vitamin D |
| B. | Vitamin E |
| C. | Vitamin C |
| D. | Vitamin A |
| Answer» B. Vitamin E | |
| 10. |
The part of sporophyte which is called sporangium is____________? |
| A. | Capsule |
| B. | Foot |
| C. | Stalk |
| D. | None of these |
| Answer» B. Foot | |
| 11. |
Which one of the following is different from all the rest regarding the number of cells inits body_______________? |
| A. | Rusts |
| B. | Mushrooms |
| C. | Molds |
| D. | Yeasts |
| Answer» E. | |
| 12. |
Which one is abundant in animals___________? |
| A. | Starch |
| B. | Glycogen |
| C. | Cellulose |
| D. | None of these |
| Answer» C. Cellulose | |
| 13. |
An enzyme which converts a dipeptide into separate amino acids is an example of__________? |
| A. | Decarboxylase |
| B. | Hydrolase |
| C. | Oxidoreductase |
| D. | Transferase |
| Answer» C. Oxidoreductase | |
| 14. |
Ribose is an example of___________? |
| A. | Trioses |
| B. | Tetroses |
| C. | Pentose |
| D. | Hexose |
| Answer» D. Hexose | |
| 15. |
The one which is not a globular protein__________? |
| A. | Anti Rh-antibody |
| B. | Enzyme |
| C. | Myosin |
| D. | Haemoglobin |
| Answer» D. Haemoglobin | |
| 16. |
Starch cellulose and glaycogen yield ___________ on complete hydrolysis? |
| A. | Maltose |
| B. | Sucrose |
| C. | Fructose |
| D. | Glucose |
| Answer» E. | |
| 17. |
____________% of Glucose normally present in our blood is? |
| A. | 0.80% |
| B. | 0.08% |
| C. | 1.80% |
| D. | 8% |
| Answer» C. 1.80% | |
| 18. |
Which of the following carbohydrate can not be hydrolysed__________________? |
| A. | Monosaccharide |
| B. | Oligosaccharide |
| C. | Polysaccharide |
| D. | None of these |
| Answer» B. Oligosaccharide | |
| 19. |
For the synthesis of 10g of glucose ______________ of energy is required? |
| A. | 717.6 Kcal |
| B. | 727 Kcal |
| C. | 737 Kcal |
| D. | 747 Kcal |
| Answer» B. 727 Kcal | |
| 20. |
Which one is soluble in hot water_____________? |
| A. | Starch |
| B. | Glycogen |
| C. | Amylose |
| D. | Amylopectin |
| Answer» D. Amylopectin | |
| 21. |
Anus is surrounded by _____ types of muscles? |
| A. | 2 |
| B. | 3 |
| C. | 1 |
| D. | 4 |
| Answer» B. 3 | |
| 22. |
The covalent bond between two monosaccharide subunits is called________________? |
| A. | Phosphodiester bond |
| B. | Peptide bond |
| C. | Glycosidic Bond |
| D. | Ionic bond |
| Answer» D. Ionic bond | |
| 23. |
Cellular digestion is associated with which organelle__________? |
| A. | Mitochondria |
| B. | Golgi bodies |
| C. | Plastids |
| D. | Lysosomes |
| Answer» E. | |
| 24. |
A genome is___________? |
| A. | Appearance of an individual |
| B. | Genetic basis of few characters |
| C. | Full set of genes of an individual |
| D. | All of these |
| Answer» D. All of these | |
| 25. |
Gut in pseudocoelomates is made from___________? |
| A. | Ectoderm |
| B. | Mesoderm |
| C. | Endoderm |
| D. | All of these |
| Answer» D. All of these | |
| 26. |
Rich source of energy in seimen is__________? |
| A. | glucose |
| B. | fructose |
| C. | lactose |
| D. | sacrose |
| Answer» B. fructose | |
| 27. |
The vascular plants are termed as____________? |
| A. | tracheophytes |
| B. | bryophytes |
| C. | pteridophytes |
| D. | all of these |
| Answer» B. bryophytes | |
| 28. |
In animals excess of nitrogen is excreted primarily in form of___________? |
| A. | Creatinine |
| B. | Trimethyamine oxide |
| C. | Pyrimidine |
| D. | Ammonia |
| Answer» E. | |
| 29. |
Group of living organisms of the same species living in the same place at the same time is called ? |
| A. | Community |
| B. | Population |
| C. | Ecosystem |
| D. | Biome |
| Answer» C. Ecosystem | |
| 30. |
On the basis of collected facts and figures, a scientist formulates a factitive statement called: |
| A. | Observation |
| B. | Research work |
| C. | Hypothesis |
| D. | Inductive Reasoning |
| Answer» D. Inductive Reasoning | |
| 31. |
The average internal temperature of human body is __________? |
| A. | 35 oC |
| B. | 36 oC |
| C. | 37 oC |
| D. | 38 oC |
| Answer» D. 38 oC | |
| 32. |
The scientific study of livings is called? |
| A. | Anatomy |
| B. | Biology |
| C. | Geology |
| D. | Zoology |
| Answer» C. Geology | |
| 33. |
The experiments on DNA molecules in chromosomes for knowing the basis of inherited diseases are conducted by ? |
| A. | Molecular biologists |
| B. | Microbiologists |
| C. | Freshwater biologists |
| D. | Social biologist |
| Answer» B. Microbiologists | |
| 34. |
The rate of reaction is directly proportional to the concentration of an enzyme which statement is incorrect in this respect_________________? |
| A. | Increase in enzyme molecule increases the available active sites |
| B. | This relation is for unlimited time period with unlimited enzyme concentration |
| C. | If the concentration is doubled the rate will become two fold. |
| D. | None of these |
| Answer» C. If the concentration is doubled the rate will become two fold. | |
| 35. |
In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon____________? |
| A. | Their physical properties like size & weight |
| B. | Physical properties of the medium like its density |
| C. | Their electrical properties like their charges |
| D. | Both a and b |
| Answer» E. | |
| 36. |
The first layer of cell wall which is formed is___________? |
| A. | Primary wall |
| B. | Secondary wall |
| C. | Middle lamella |
| D. | All of these |
| Answer» B. Secondary wall | |
| 37. |
Cn(H2O)n. is a general formula of_____________? |
| A. | Monosaccharides |
| B. | Oligosaccharides |
| C. | Ploysacharides |
| D. | Carbohydrates |
| Answer» E. | |
| 38. |
Tibia is a bone found in the ____________? |
| A. | Skull |
| B. | Arm |
| C. | Leg |
| D. | Face |
| Answer» D. Face | |
| 39. |
Proteins are made from amino acids by the process of ______________? |
| A. | Hydrolysis |
| B. | Pinocytosis |
| C. | Dehydration synthesis |
| D. | Active transport |
| Answer» D. Active transport | |
| 40. |
Pancreas produces secretory granules that help in digestion. These granules after passing through endoplasmic reticulum are pinched off from ________ surface of Golgi apparatus: |
| A. | Forming face |
| B. | Maturating face |
| C. | Any of them |
| D. | None of these |
| Answer» C. Any of them | |
| 41. |
Amoeba can move with the help of? |
| A. | Flagella |
| B. | Pseudopodia |
| C. | Water |
| D. | Cilia |
| Answer» C. Water | |
| 42. |
Earthworm is included in_____________? |
| A. | Kingdom Plantae |
| B. | Kingdom Protoctista |
| C. | Kingdom Monera |
| D. | Kingdom Animalia |
| Answer» E. | |
| 43. |
The Study of organisms inhabiting the sea and Ocean and the physical and chemical characteristics of their environment is: |
| A. | Social Biology |
| B. | Marine Biology |
| C. | Environmental Biology |
| D. | Fresh Water Biology |
| Answer» C. Environmental Biology | |
| 44. |
According to modern system of taxonomy, living organisms have been classified into? |
| A. | Three Kingdoms |
| B. | Five Kingdoms |
| C. | Two Kingdoms |
| D. | Six Kingdoms |
| Answer» C. Two Kingdoms | |
| 45. |
Enterobius vermicularis is commonly known as____________? |
| A. | Flatworm |
| B. | Pinworm |
| C. | Hook worm |
| D. | Tapeworm |
| Answer» C. Hook worm | |
| 46. |
Water has maximum density at____________? |
| A. | 0°C |
| B. | 4°C |
| C. | 4° K |
| D. | 4.8°C |
| Answer» C. 4° K | |
| 47. |
The word “BIOLOGY” has been derived from_________ word? |
| A. | Latin |
| B. | English |
| C. | Greek |
| D. | French |
| Answer» D. French | |
| 48. |
Biologist ‘Grass’ discovered the life cycle of plasmodium in_______? |
| A. | 1896 |
| B. | 1897 |
| C. | 1898 |
| D. | 1899 |
| Answer» D. 1899 | |
| 49. |
The first antibiotic to be discovered was_____________? |
| A. | Penicillin |
| B. | Cephalosporin |
| C. | Amino glycosides |
| D. | Erythromycin |
| Answer» B. Cephalosporin | |
| 50. |
Kingdom Protoctista includes____________? |
| A. | Fungi |
| B. | Prokaryotes |
| C. | protists |
| D. | Piantae |
| Answer» D. Piantae | |