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GCSE OCR Biology B Paper 2
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#1. Which of the following is an effect stimulated by the thyroxine hormone?
#2. Growth is increased during puberty. Why is this?
#3. What is the role of ribosomes?
#4. What natural source of nitrogen is sometimes added to fields by farmers?
#5. What travels along neurones to pass information through the nervous system?
#6. Through which process would air in a space station move if someone opened a door to space?
#7. What is the definition of resolution?
#8. Which system is responsible for ensuring the supply of oxygen and glucose to cells?
#9. True or false – A passive process is automatic and does not require energy?
#10. Is respiration an exothermic or an endothermic reaction?
#11. What effect does adrenaline have on the liver?
#12. Decomposers break down dead animal and plant material – what happens to the carbon inside the dead organisms?
#13. When an impulse reaches an axon terminal what happens?
#14. What is the function of white blood cells?
#15. True or false – carbon dioxide is removed from the atmosphere as it dissolves in the oceans?
#16. Which type of factor is nutrient availability?
#17. What is the role of the cell membrane?
Select all that apply:
#18. Respiration from animals is a source of carbon dioxide in the atmosphere – do plants also use respiration?
#19. Multicellular organisms are too large to allow diffusion through their cells to provide the necessary resources. Instead we have transport systems. What is the name of the transport system that uses capillaries to transport substances via the blood?
#20. How many chromosomes does a single sperm cell have?
#21. What is the name of the chemicals that we use to transmit messages through the blood to organs?
#22. Which of the following are strategies organisms use to adapt to changing abiotic conditions?
Select all that apply:
#23. Which structures in the lungs increase the surface area and therefore the speed and amount of gas exchanged?
#24. Finish the sentence: Nitrogen compounds found in artificial fertilisers are ……… and dissolve in the soil’s water.
#25. Which of these substances is sometimes added to water to make it potable?
#26. What is the balanced chemical equation for photosynthesis?
#27. Which type of factor is disease?
#28. Where does blood from the aorta travel to?
#29. Match the description to the correct term. All of the organisms that live in a particular pond.
#30. How many chambers does the heart have?
#31. Place the measurement units in order from from biggest to smallest. micrometres, picometres, kilometres, metres, nanometres, millemetres ? Use British Spelling - Metres* NOT Meters
#32. What is the equation for magnification?
There are two equations for magnification, both tell you how many times larger the image appears than it actually is.
One equation links the magnification of the two lenses and the other equation links magnification to the size of the object and image.
#33. Why do high breathing and heart rates remain after exercise?
Select all that apply:
#34. Complete the equation used to calculate population size: population size = ………….. x total size of it habitat / total area of quadrats
#35. What is the role of starch synthase?
#36. What do we call animals that only eat plants?
#37. What do we mean by the distribution of organisms?
#38. What are enzymes?
#39. In which sub-cellular structure inside plant cells does photosynthesis occur?
#40. Upon the release of adrenaline do blood vessels widen, narrow or both?
The blood vessels are constricted or dilated depending on where the blood flows.
The muscles required for running for example are dilated since they are required to match the “fight or flight” response. Others are constricted as they are temporarily deemed less important.
#41. Which of the following is the source of coal?
#42. Which sub-cellular structures can be found in bacteria?
Select all that apply:
#43. Is active transport an active or a passive process?
#44. Which are the two kinds of sampling we normally use?
Select all that apply:
#45. Organs that exchange substances into and out of the body have:
#46. Through which process do chemicals move across synapses?
#47. What is the role of lipase?
#48. The drug called Digitalis slows the heart rate. Where does the drug come from?
#49. Where are relay neurones found?
#50. Increases in thyroxine concentration in the blood cause a decrease in the amount of thyroxine released. What kind of feedback mechanism is this?
#51. Is photosynthesis an endothermic or an exothermic reaction?
#52. What is the Lock and Key Model of enzyme action?
#53. The 5 kingdoms of life are Animals, Plants, Fungi, Protists and Prokaryotes. Which kingdom do algae belong to?
#54. What is the role of coronary arteries?
#55. What is the function of the cell wall?
#56. Which of the following features are found in veins?
#57. What do we call animals that are eaten by other animals?
#58. What is the cell wall made from in plants?
#59. Which of these is an effector?
#60. Which of the following features are found in arteries?
#61. What is an advantage of anaerobic respiration?
#62. Is diffusion an active or a passive process?
#63. In active transport – are particles travelling with or against the concentration gradient?
#64. Sensory neurones have a fatty layer of insulation, what is it called?
1
#65. Resting metabolic rate is measured under which of the following conditions?
Select all that apply:
#66. What do we call the process by which farmers change the crops they grow each year to maintain nitrogen in the soil?
#67. Why do we use systematic or random sampling of an area to determine the distribution or abundance of organisms?
#68. Why do plants need oxygen?
#69. Through which process do nutrients enter root hair cells from the soil?
#70. How do most plants get their nitrogen?
#71. What is the difference between aerobic and anaerobic respiration?
#72. Cells are adapted to perform a specific function. Why do cells in the pancreas have lots of ribosomes?
#73. Which of the following are prokaryotes?
Select all that apply:
#74. Name two resources that both animals and plants need to survive and reproduce? ? structure your answer like this: ..... and .....
#75. Name one hormone that is produced in the pancreas?
#76. What is the gap between neurones called?
#77. What is the heart rate measured in?
#78. What is the role of the nucleus?
#79. Which square instrument do we use for randomly sampling population sizes?
#80. What is the role of effectors?
#81. Which of the following is part of the central nervous system (CNS)?
#82. In diffusion – are particles travelling with or against the concentration gradient?
#83. What are the monomers of carbohydrates?
#84. During exercise, your cells require more oxygen and glucose. What changes in the body happen during exercise to meet these increased needs?
Select all that apply:
#85. Which of these is the correct explanation for why photosynthesis is slower at lower temperatures?
#86. What is the function of red blood cells (Erythrocytes)?
#87. In some areas where there are poor soils (not enough nitrogen) carnivorous plants have adapted to get their nitrogen from which source?
