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.
| 1. |
The First step of Bacterial Replication is |
| A. | Pinching of the plasma membrane |
| B. | Separation of daughter cells |
| C. | Attachment of the dna to the plasma membrane |
| D. | Dna replication |
| Answer» E. | |
| 2. |
Synapsis occurs during |
| A. | Mitosis |
| B. | Meiosis |
| C. | Both a & b |
| D. | None |
| Answer» C. Both a & b | |
| 3. |
Which statement about capillaries is correct? |
| A. | Their walls are covered with cilia |
| B. | They warm and humidify inhaled air |
| C. | Their walls are only one cell thick |
| D. | They move mucus through the lungs |
| Answer» D. They move mucus through the lungs | |
| 4. |
Which of the following pairs is mismatched? |
| A. | Hooke - cell theory |
| B. | Van leeuwenhoek - germ theory |
| C. | Lister - aseptic surgery |
| D. | Jenner - vaccines |
| Answer» C. Lister - aseptic surgery | |
| 5. |
What sugar is found in RNA? |
| A. | Deoxyribose |
| B. | Ribose |
| C. | Pentose |
| D. | Sucrose |
| Answer» C. Pentose | |
| 6. |
Which of these is Not a Carcinogen? |
| A. | Cadmium |
| B. | Asbestos |
| C. | Benzene |
| D. | All the above |
| Answer» E. | |
| 7. |
What sugar is found in DNA? |
| A. | Ribose |
| B. | Deoxyribose |
| C. | Pentose |
| D. | Sucrose |
| Answer» C. Pentose | |
| 8. |
Which of the following statements is most accurate regarding infection with parvovirus B19? |
| A. | Parvovirus b19 causes severe anemia because it preferentially infects erythrocyte precursors |
| B. | Parvovirus b19 can cause hydrops fetalis via transplacental infection of a fetus in a seropositive mother |
| C. | Parvovirus b19 can be diagnosed by detection of viral rna using pcr or hybridization assays |
| D. | Parvovirus b19 replicates in the host cell nucleus utilizing a virally encoded dna polymerase to create a double- stranded dna intermediate |
| Answer» B. Parvovirus b19 can cause hydrops fetalis via transplacental infection of a fetus in a seropositive mother | |
| 9. |
How many Nucleotides make up a Codon? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» B. 4 | |
| 10. |
Nitrogenous Food is |
| A. | Proteins |
| B. | Carbohydrates |
| C. | Salts |
| D. | Lipids |
| Answer» B. Carbohydrates | |
| 11. |
What carries Blood away from the Heart? |
| A. | Arteries |
| B. | Veins |
| C. | Both a & b |
| D. | None |
| Answer» B. Veins | |
| 12. |
What are the building blocks of Nucleic Acids? |
| A. | Pentose sugar |
| B. | Dna |
| C. | Rna |
| D. | Nucleotides |
| Answer» E. | |
| 13. |
What carries Blood back to the Heart? |
| A. | Veins |
| B. | Arteries |
| C. | Both a & b |
| D. | None |
| Answer» B. Arteries | |
| 14. |
Nucleoli are present during |
| A. | Prophase |
| B. | Anaphase |
| C. | Interphase |
| D. | Prometaphase |
| Answer» D. Prometaphase | |
| 15. |
Bacteria divide by |
| A. | Binary fission |
| B. | Spirilla |
| C. | Rna |
| D. | Fusion |
| Answer» B. Spirilla | |
| 16. |
What do genes code for? |
| A. | Ptoteins |
| B. | Dna |
| C. | Rna |
| D. | None |
| Answer» B. Dna | |
| 17. |
Which feature do Prokaryotic and Eukaryotic cells share |
| A. | Nucleus |
| B. | Dna |
| C. | Nuclear membrane |
| D. | Membrane bound organelles |
| Answer» C. Nuclear membrane | |
| 18. |
At what temperature do pathogenic bacteria grow best in food? |
| A. | 5 to 15 degrees celsius |
| B. | 15 to 25 degrees celsius |
| C. | 20 to 45 degrees celsius |
| D. | 40 to 65 degrees celsius |
| Answer» D. 40 to 65 degrees celsius | |
| 19. |
Which of these does not contain a structural protein? |
| A. | Tendons |
| B. | Ovalbumin |
| C. | Muscles |
| D. | Ligaments |
| Answer» C. Muscles | |
| 20. |
Which of the following does not occur during Mitosis? |
| A. | Spindle formation |
| B. | Condensation of the chromosomes |
| C. | Breakdown of the nuclear membrane |
| D. | Replication of the dna |
| Answer» E. | |
| 21. |
What is the phase following the metaphas In cell division known as: |
| A. | prophase |
| B. | anaphase |
| C. | telophase |
| D. | extophase |
| Answer» C. telophase | |
| 22. |
how many contractile vacuoles are there In most species of Paramecium? |
| A. | one |
| B. | two |
| C. | three |
| D. | four |
| Answer» C. three | |
| 23. |
The cerebral lobes is the speech center is located in ........? |
| A. | frontal |
| B. | parietal |
| C. | temporal |
| D. | occipital |
| Answer» B. parietal | |
| 24. |
When a human donor gives a pint of blood, how many weeks are required for the body RESERVE of red corpuscles to be replaced? |
| A. | 1 week |
| B. | 3 week |
| C. | 7 week |
| D. | 21 week |
| Answer» D. 21 week | |
| 25. |
The condition in which there is a DECREASE in the number of white blood cells in humans is called |
| A. | leukocytosis (pron: lew-kO-sigh-toe-sis) |
| B. | leukopenia (pron: lew-kO-pea-nee-ah) |
| C. | leukemia (pron: lew-kee-me-ah) |
| D. | leukohyperia (pron: lew-kO-high-per-e-ah) |
| Answer» C. leukemia (pron: lew-kee-me-ah) | |
| 26. |
Surplus red blood cells, needed to meet an emergency, are MAINLY stored in which organ of the human body? |
| A. | pancreas |
| B. | spleen |
| C. | liver |
| D. | kidneys |
| Answer» C. liver | |
| 27. |
Of the following, which mechanisms are important in the death of erythrocytes (pron:eh-rith-reh-sites) in human blood? Is it |
| A. | phagocytosis (pron: fag-eh-seh-toe-sis) |
| B. | hemolysis |
| C. | mechanical damage |
| D. | all of the above |
| Answer» E. | |
| 28. |
Enzymes are produced by |
| A. | Endocrine glands |
| B. | Exocrine glands |
| C. | Liver |
| D. | Spleen |
| Answer» C. Liver | |
| 29. |
Genes are made of |
| A. | Carbohydrates |
| B. | Proteins |
| C. | Fats |
| D. | Nucleotides |
| Answer» E. | |
| 30. |
Which among the following is a Vitamin? |
| A. | Citric acid |
| B. | Follic acid |
| C. | Glutonic acid |
| D. | None |
| Answer» C. Glutonic acid | |
| 31. |
Water pollution of a river is measured by_______ |
| A. | Amount of chlorine dissolve in water |
| B. | Amount of ozone dissolve in water |
| C. | Amount of nitrogen dissolve in water |
| D. | Amount of oxygen dissolve in water |
| Answer» E. | |
| 32. |
The artificial kidney is a |
| A. | Transplant |
| B. | Machine |
| C. | Another's kidney |
| D. | Other kidney from same body |
| Answer» C. Another's kidney | |
| 33. |
The book Historia plantrum is written by |
| A. | Aristotle |
| B. | Theophrastus |
| C. | Hipporates |
| D. | Darwin |
| Answer» C. Hipporates | |
| 34. |
Infection of salivary glands by a virus leads to |
| A. | Tetanus |
| B. | Mumps |
| C. | Pyorrhoea |
| D. | Ulcers |
| Answer» C. Pyorrhoea | |
| 35. |
In photosynthesis________ |
| A. | Light energy is converted into chemical energy |
| B. | Chemical energy is converted into light energy |
| C. | Chemical energy is converted into electrical energy |
| D. | Light energy is converted into mechanical energy |
| Answer» B. Chemical energy is converted into light energy | |
| 36. |
Organisms need Nutrients in order to |
| A. | Breaking down food |
| B. | Utilize chemical compounds |
| C. | Recycling |
| D. | None |
| Answer» B. Utilize chemical compounds | |
| 37. |
Which is the Largest Organ in the Human Body? |
| A. | Heart |
| B. | Brain |
| C. | Skin |
| D. | Liver |
| Answer» D. Liver | |
| 38. |
Metastasis is the process by which _________ |
| A. | Cell divide rapidly under the influence of drugs |
| B. | Cancer cell spread through the blood or lymphatic system to other site or organs |
| C. | The chromosome in cell nuclei are attached to the soindle before moving to the anaphase poles |
| D. | Cancer cells are successfully inhibited to divide any further |
| Answer» C. The chromosome in cell nuclei are attached to the soindle before moving to the anaphase poles | |
| 39. |
Which organelles in the cell, other than nucleus contains DNA? |
| A. | Centriole |
| B. | Goalgi apparatus |
| C. | Lysosomes |
| D. | Mitochondria |
| Answer» E. | |
| 40. |
Organisms that live in the deep sea are mainly |
| A. | Herbivores |
| B. | Carnivores |
| C. | Detritivores |
| D. | None of the above |
| Answer» D. None of the above | |
| 41. |
Which of the following is not a function of proteins? |
| A. | Build tissues such as bone and muscle |
| B. | Help to fight disease |
| C. | Nail formation |
| D. | Store and transmit heredity |
| Answer» E. | |
| 42. |
Study Of Cells Is Called |
| A. | Cellogysm |
| B. | Cell biology |
| C. | Cell organism |
| D. | None |
| Answer» C. Cell organism | |
| 43. |
From the following pairs, find the one which is correctly matched? |
| A. | Scurvy- thiamine |
| B. | Tuberculosis- ats |
| C. | Tetanus- bcg |
| D. | Malaria- chloroquine |
| Answer» E. | |
| 44. |
Nitrogen Fixation is carried out primarily by |
| A. | Plants |
| B. | Humans |
| C. | Consumers |
| D. | Bacteria |
| Answer» E. | |
| 45. |
In which Organelle does Cellular Respiration Occur? |
| A. | Chloroplast |
| B. | Atp and nadph |
| C. | Cytoplasm |
| D. | Mitochondria |
| Answer» E. | |
| 46. |
Which of the following crops would be preffered for sowing in order to enrich the soil with nitrogen? |
| A. | Wheat |
| B. | Mustard |
| C. | Sunflower |
| D. | Gram |
| Answer» E. | |
| 47. |
An area of dead myocardial tissue is called |
| A. | An infarct |
| B. | Stenosis |
| C. | An induration |
| D. | Hypertrophy |
| Answer» B. Stenosis | |
| 48. |
The most healthy edible oil for heart is |
| A. | Almond oil |
| B. | Sesame oil |
| C. | Mustard oil |
| D. | Olive oil |
| Answer» E. | |
| 49. |
Important component that helps in clotting of the blood is called ____. |
| A. | Haemoglobin |
| B. | Platelets |
| C. | Serum |
| D. | Plasma |
| Answer» C. Serum | |
| 50. |
Transmission of stimuli from one part of body to other part takes place through __________ |
| A. | Muscular tissue |
| B. | Epithelium tissue |
| C. | Connective tissue |
| D. | Nervous tissue |
| Answer» E. | |