Aptitude MCQ Quiz Hub

Aptitude Mcq Questions Enzymes

Choose a topic to test your knowledge and improve your Aptitude skills

1. Which of the following is the empirical formula of chlorophyll b?




2. How many moles of carbon dioxide are produced by complete oxidation of one mole of puruvic acid?




3. The food of hydra consists of




4. Hunger pangs usually begin ______ after the previous meal.




5. If a plasmolysed plant cell is placed in water the cell will




6. The major constituent of blood plasma is




7. All of the following veins carry deoxygenated blood except




8. The windpipe or trachea lies




9. Scurvy and beri - beri and caused by the deficiency of




10. Kangaroo rat most probably would be found in




11. The greatest diversity of animals in the lake is found in which one of the following zones?




12. What is the characteristic feature of consumers?




13. What percentage of light reaching the earth is used in photosynthesis?




14. All of the following are involved in nitrification except




15. Competition between species will be greatest if they attempt to occupy the same




16. In most ecosystems the greatest amount of energy flows through the




17. Which of the following relationship is NOT an example of symbiosis?




18. Animals with greatest number of similarities are grouped together in a/an




19. The one which is present in all aerobic species




20. The structure which has been formed or modified from gill pouches in humans is




21. The first eukarotes appeared about ______ years ago




22. According to Lamarch evolution occurred as the result of




23. The discease in which transmembrane carrier for the chloride ion is not produced is




24. The one which can break open a plasmid ring is




25. A genome is




26. Genes will not be found in gene pairs in the




27. The red green colour blindness is sex linked recessive condition in man. A father with normal vision and a color blind mother world expect to produce.




28. Which one of the following stage preceeds mitosis during cell cycle?




29. Which one of the following syndrome is the result of meiotic non dysjunction?




30. Which one of the following is correct sequence of stages of prophase 1 of meiosis




31. In humans the number of tetrads formed during mitosis is




32. The sequence of 3 bases on tRNA which is complementary to condon of mRNA is called




33. Which statement correctly describes the transcription of DNA?




34. The basic structural unit of a chromosome is




35. The first stage of development in which a cavity appears is the




36. Exposure to low temperature stimulates plants to flower. This is called




37. The cells present in testes and secrete testosterone are




38. The type of learning in which there is loss or decrease in response to repeated stimuli




39. The one which causes contraction of wall of the uterus during and after birth




40. The one which is a weed killer




41. Sleep movements are a type of




42. The one that stores calcium




43. Which one of the following is most likely to occur in an animal during winter?




44. Sebum produced from sebaceous glands in a mammal helps in




45. Biological molecules (proteins) which catalyze a biochemical reaction and remain unchanged after completion of reaction are called




46. Which statement about enzyme is incorrect:




47. In which of the following location enzymes controlling cellular respiration are present?




48. An activated enzyme consisting of polypeptide chain and a cofactor is called:




49. Which one forms the raw material for coenzymes?




50. A cofactor made of inorganic ion which is detachable is called