Test Series Science Life Process Class-10

 

#1. Which of the following is considered common evidence for being alive?

#2. Why is invisible molecular movement necessary for life?

#3. The processes which together perform the maintenance job of the body are called:

#4. Which process transfers a source of energy from outside the body to the inside?

#5. The process of acquiring oxygen from outside and using it to break down food for cellular needs is:

#6. Why is simple diffusion insufficient for multi-cellular organisms like humans?

#7. The process of removing harmful metabolic waste products from the body is called:

#8. Which organisms are called autotrophs?

#9. In plants, carbohydrates not used immediately are stored as:

#10. In the human body, energy derived from food is stored in the form of:

#11. What is the first step in the process of photosynthesis?

#12. Desert plants take up carbon dioxide at what time?

#13. Which cell organelles contain chlorophyll?

#14. The tiny pores on the surface of leaves used for gas exchange are called:

#15. The opening and closing of stomatal pores is a function of:

#16. Which substance is used in experiments to absorb carbon dioxide?

#17. Which essential element is used in the synthesis of proteins?

#18. Amoeba takes in food using temporary finger-like extensions called:

#19. Which of the following is a parasite?

#20. Paramoecium moves food to a specific spot using:

#21. The alimentary canal extends from

#22. Saliva contains which enzyme to break down starch?

#23. The rhythmic contraction of muscles in the canal to push food forward is called:

#24. Which organ expands when food enters it?

#25. Gastric glands in the stomach release:

#26. What is the function of hydrochloric acid in the stomach?

#27. What protects the inner lining of the stomach from acid?

#28. The longest part of the alimentary canal is the:

#29. Herbivores have a longer small intestine to digest:

#30. The small intestine is the site for complete digestion of:

#31. Bile juice from the liver makes the food coming from the stomach

#32. Bile salts break down large fat globules into smaller ones, a process similar to:

#33. Which enzyme is responsible for digesting proteins in the pancreatic juice?

#34. Lipase is an enzyme that breaks down:

#35. Intestinal enzymes finally convert proteins into:

#36. The finger-like projections in the small intestine that increase surface area are:

#37. The main function of the large intestine is to:

#38. Dental plaque is formed by:

#39. The first step of glucose breakdown (into pyruvate) occurs in the:

#40. Anaerobic respiration in yeast produces:

#41. Breakdown of pyruvate using oxygen takes place in the:

#42. Build-up of which substance in muscles causes cramps during sudden activity?

#43. The energy currency for most cellular processes is:

#44. How much energy is released when the terminal phosphate linkage in ATP is broken?

#45. In plants, the exchange of gases occurs through:

#46. At night, what is the major gas exchange activity in plants?

#47. Why is the breathing rate in aquatic organisms faster than terrestrial ones?

#48. In humans, air is filtered in the nostrils by:

#49. Rings of cartilage are present in the throat to:

#50. The balloon-like structures in the lungs where gas exchange occurs are:

#51. What happens to the diaphragm when we breathe in?

#52. The respiratory pigment in human beings is:

#53. Haemoglobin has a very high affinity for:

#54. Carbon dioxide is mostly transported in blood in:

#55. If the alveolar surface were spread out, it would cover about:

#56. Blood consists of a fluid medium called:

#57. The heart is roughly the size of a:

#58. Which chamber of the heart receives oxygen-rich blood from the lungs?

#59. Why do ventricles have thicker muscular walls than atria?

#60. What ensures that blood does not flow backwards in the heart?

#61. Amphibians and many reptiles have hearts with how many chambers?

#62. In fish, blood goes through the heart how many times during one cycle?

#63. Double circulation is a characteristic of:

#64. Normal systolic and diastolic blood pressure is:

#65. Blood pressure is measured with which instrument?

#66. Arteries carry blood:

#67. Which blood vessels have walls that are one-cell thick?

#68. Platelets help in:

#69. Xylem tissue in plants moves:

#70. Phloem tissue transports:

#71. The loss of water in the form of vapor from aerial parts of the plant is:

#72. Transpiration pull is the major driving force for water movement during:

#73. The transport of soluble products of photosynthesis is called:

#74. Translocation in phloem is achieved by utilizing energy from:

#75. In the spring, sugar stored in roots is transported to:

#76. The basic filtration unit in the human kidney is the:

#77. The cup-shaped end of the nephron is called:

#78. Which of the following is NOT selectively re-absorbed in the kidney tubules?

#79. Urine is stored in the:

#80. Hemodialysis is used in case of:

#81. In a healthy adult, the initial filtrate in the kidneys is about how much per day?

#82. Which of the following is a waste product of photosynthesis?

#83. Plants store some waste products as:

#84. Lack of oxygen in muscles during sudden activity converts pyruvate into:

#85. Which fluid drains excess fluid from extra cellular space back into the blood?

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