MCQOPTIONS
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MCQOPTIONS
This section includes 138 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
All information about function of a cell and its genetic structure is stored in |
| A. | tissue |
| B. | cell wall |
| C. | cytosol |
| D. | DNA |
| Answer» E. | |
| 2. |
Potometer is used to measure |
| A. | rate of root pressure |
| B. | capillary action |
| C. | transpiration pull |
| D. | all of above |
| Answer» D. all of above | |
| 3. |
Number of glucose (C₆H₁₂O₆) units in a starch (C₆H₁₀O₅)n molecule may be up to |
| A. | 100 |
| B. | 200 |
| C. | 220 |
| D. | 300 |
| Answer» C. 220 | |
| 4. |
Too little carbon dioxide (CO₂) in lungs leads to |
| A. | no breathing |
| B. | over breathing |
| C. | under breathing |
| D. | asthma |
| Answer» C. under breathing | |
| 5. |
A nucleotide is combination of 3 subunits, i.e. a pentose sugar, a nitrogenous base and |
| A. | acetic acid |
| B. | phosphoric acid |
| C. | maleic acid |
| D. | alcohol |
| Answer» C. maleic acid | |
| 6. |
Most simpler sugars which are sweet and highly soluble in water are called |
| A. | Polysaccharides |
| B. | Monosaccharide's |
| C. | Disaccharides |
| D. | Oligosaccharides |
| Answer» C. Disaccharides | |
| 7. |
Name of nucleic acids reflected feature that they are isolated from their |
| A. | chromosomes |
| B. | nuclei |
| C. | Golgi complex |
| D. | mitochondria |
| Answer» C. Golgi complex | |
| 8. |
Yielded compound by combination of a base and a pentose sugar is called |
| A. | nucleotide |
| B. | nucleoside |
| C. | Nuclei |
| D. | nucleolus |
| Answer» C. Nuclei | |
| 9. |
Heterogeneous group of compounds which are linked with fatty acids are called as |
| A. | lipids |
| B. | proteins |
| C. | glycerol |
| D. | carbohydrates |
| Answer» B. proteins | |
| 10. |
For synthesis of 10 g of a glucose, a plant may need amount of solar energy equals to |
| A. | 712.6 |
| B. | 717.6 |
| C. | 716.2 |
| D. | 71.76 |
| Answer» C. 716.2 | |
| 11. |
Ratio of mRNA of a total RNA in cell is |
| A. | 3-4% |
| B. | 3-6% |
| C. | 3-8% |
| D. | 3% |
| Answer» B. 3-6% | |
| 12. |
Animal starch is called |
| A. | glucose |
| B. | glycogen |
| C. | cellulose |
| D. | fructose |
| Answer» C. cellulose | |
| 13. |
Fruits and leaves have a natural protective coatings of fatty acids known as |
| A. | waxes |
| B. | oil |
| C. | cutin |
| D. | cell wall |
| Answer» B. oil | |
| 14. |
Proteins which defend body against pathogens are called |
| A. | antibiotics |
| B. | antibodies |
| C. | antifungal |
| D. | anti-inflammatory |
| Answer» C. antifungal | |
| 15. |
Due to its unique properties carbon can react with many known elements forming |
| A. | covalent bond |
| B. | ionic bond |
| C. | coordinate covalent bond |
| D. | hydrogen bond |
| Answer» B. ionic bond | |
| 16. |
Transfer of genetic message from nucleus to ribosome in cytoplasm is done by |
| A. | mRNA |
| B. | tRNA |
| C. | rRNA |
| D. | nRNA |
| Answer» B. tRNA | |
| 17. |
Substance which can alter or speed up the chemical reaction without itself being chemically unchanged is |
| A. | saliva |
| B. | pathology |
| C. | catalyst |
| D. | influenza |
| Answer» D. influenza | |
| 18. |
Combination of glucose (C₆H₁₂O₆) and fructose (C₆H₁₂O₆) molecules result in |
| A. | maltose |
| B. | sucrose |
| C. | galactose |
| D. | lactose |
| Answer» C. galactose | |
| 19. |
Molecular formula of a disaccharide is |
| A. | C12H22O12 |
| B. | C11H22O12 |
| C. | C12H22O11 |
| D. | C6H12O6 |
| Answer» D. C6H12O6 | |
| 20. |
Glycogen cannot be mixed in aqueous solution therefore it is |
| A. | insoluble |
| B. | soluble |
| C. | hydrolyzed |
| D. | useless |
| Answer» B. soluble | |
| 21. |
Specific arrangement of highly complex proteins and polypeptide tertiary chains is found in oxygen carrying protein of RBC called |
| A. | Immunoglobulin |
| B. | platelets |
| C. | hemoglobin |
| D. | keratin fiber |
| Answer» D. keratin fiber | |
| 22. |
Most abundant compound also known as medium of life is |
| A. | air |
| B. | oxygen |
| C. | water |
| D. | food |
| Answer» D. food | |
| 23. |
A mammalian cell contains 18% of |
| A. | water |
| B. | proteins |
| C. | ions |
| D. | fats |
| Answer» C. ions | |
| 24. |
Clycylalanine is a |
| A. | dipeptide |
| B. | monopepttide |
| C. | polypeptide |
| D. | tertrapeptide |
| Answer» B. monopepttide | |
| 25. |
Lipids which are composed of glycerol and fatty acids are called |
| A. | Acylglycerols |
| B. | waxes |
| C. | phospholipids |
| D. | glycolipids |
| Answer» B. waxes | |
| 26. |
Utilization of carbon dioxide from air and water from soil to manufacture glucose, is done by |
| A. | animals |
| B. | plants |
| C. | humans |
| D. | bacteria |
| Answer» C. humans | |
| 27. |
Amylopectin starches are soluble in both hot and cold water and they have |
| A. | branched chains |
| B. | unbranched chains |
| C. | glycosidic linkage |
| D. | ring corners |
| Answer» B. unbranched chains | |
| 28. |
Macromolecules helps in formation of cell because they are |
| A. | soluble |
| B. | insoluble |
| C. | stable |
| D. | instable |
| Answer» C. stable | |
| 29. |
If an Oligosaccharides is hydrolyzed, it will yield up to two to ten |
| A. | monosaccharides |
| B. | disaccharides |
| C. | oligosaccharides |
| D. | polysaccharides |
| Answer» B. disaccharides | |
| 30. |
Purine comprises of |
| A. | adenine and guanine |
| B. | cytosine and thiamine |
| C. | adenine and uracil |
| D. | guanine and thiamine |
| Answer» B. cytosine and thiamine | |
| 31. |
Globular proteins are multiple folding of polypeptide chain hence their shape is |
| A. | round |
| B. | ellipsoidal |
| C. | spiral |
| D. | double helical |
| Answer» C. spiral | |
| 32. |
Study of chemical components as well as chemical processes that take place in a living organism is |
| A. | Microbiology |
| B. | Biochemistry |
| C. | Fresh water biology |
| D. | Chemical biology |
| Answer» C. Fresh water biology | |
| 33. |
People with gallstones in gall bladder should avoid |
| A. | proteins |
| B. | fiber |
| C. | vitamins |
| D. | fats |
| Answer» E. | |
| 34. |
Two molecules which belong to different categories combine together to form |
| A. | a complex molecule |
| B. | conjugated molecule |
| C. | compound molecule |
| D. | double molecule |
| Answer» C. compound molecule | |
| 35. |
Only 20 types of amino acids can give rise to over |
| A. | 10,000 proteins |
| B. | 10,500 proteins |
| C. | 10,100 proteins |
| D. | 11,500 proteins |
| Answer» B. 10,500 proteins | |
| 36. |
Type of RNA which acts as a machinery for synthesis of proteins is |
| A. | mRNA |
| B. | tRNA |
| C. | rRNA |
| D. | RNA |
| Answer» D. RNA | |
| 37. |
Number of nucleotide in a tRNA chain length is |
| A. | 70-90 |
| B. | 75-95 |
| C. | 70-80 |
| D. | 75-90 |
| Answer» E. | |
| 38. |
A protein which act as a carrier and transport oxygen and carbon dioxide in human body is known as |
| A. | hemoglobin |
| B. | immunoglobulin |
| C. | lipids |
| D. | antibody |
| Answer» B. immunoglobulin | |
| 39. |
Amino acids are composed of |
| A. | carbon, nitrogen and oxygen |
| B. | carbon, oxygen and sulfur |
| C. | carbon, oxygen and hydrogen |
| D. | carbon, oxygen, hydrogen and nitrogen |
| Answer» E. | |
| 40. |
Lipids which are fats and oils are lighter, than water therefore have a specific gravity of about |
| A. | 0.6 |
| B. | 0.8 |
| C. | 0.9 |
| D. | 0.1 |
| Answer» C. 0.9 | |
| 41. |
Most important components of triglycerides are |
| A. | fatty acids |
| B. | C-H bonds |
| C. | steroids |
| D. | carotenoids |
| Answer» B. C-H bonds | |
| 42. |
Derivatives of phosphatidic acid, which are composed of glycerol, fatty acids and phosphoric acids are known as |
| A. | phospholipids |
| B. | acylghycerols |
| C. | triglycerides |
| D. | esters |
| Answer» B. acylghycerols | |
| 43. |
Proteins are classified into two groups, i.e. Fibrous proteins and |
| A. | glandular proteins |
| B. | globular proteins |
| C. | Enzymatic proteins |
| D. | Storage proteins |
| Answer» C. Enzymatic proteins | |
| 44. |
Phosphoric acid can be joined with OH group of a pentose sugar with help of |
| A. | phosphodiester bond |
| B. | ionic bond |
| C. | covalent bond |
| D. | ester linkage |
| Answer» E. | |
| 45. |
Sequence if amino acids in DNA can be determined by order of |
| A. | mRNA |
| B. | tRNA |
| C. | rRNA |
| D. | nucleotides |
| Answer» E. | |
| 46. |
Anabolism and catabolism are types of |
| A. | chemical reaction |
| B. | chain reactions |
| C. | metabolism |
| D. | complex reactions |
| Answer» D. complex reactions | |
| 47. |
According to Erwin Chargoff analysis, ratio of adenine and thiamine is |
| A. | equal |
| B. | unequal |
| C. | less |
| D. | more |
| Answer» B. unequal | |
| 48. |
Sugars which are less sweet and less soluble in water are called |
| A. | monosaccharides |
| B. | polysaccharide |
| C. | oligosaccharides |
| D. | disaccharides |
| Answer» D. disaccharides | |
| 49. |
Overall chemical reaction that takes place with in a cell are collectively called as |
| A. | metabolism |
| B. | anabolism |
| C. | complex reaction |
| D. | catabolism |
| Answer» B. anabolism | |
| 50. |
Glycogen is found in excess quantity in animals' liver and |
| A. | muscles |
| B. | bones |
| C. | skin |
| D. | kidneys |
| Answer» B. bones | |