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GCSE OCR Biology B Paper 2
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#1. What is stroke volume?
#2. Which type of factor is air temperature?
#3. What is the part of the heart that the arrows are pointing to?
#4. Which type of white blood cells produce antibodies that stick to the antigens of pathogens?
#5. What is the function of the cell wall?
#6. Where does the water in lakes and rivers end up?
#7. What is the role of the inferior vena cava?
#8. Which of the following are strategies organisms use to adapt to changing abiotic conditions?
Select all that apply:
#9. Why is the binomial naming system useful for scientists?
#10. Name one hormone that is released from the ovaries?
#11. Where are nitrogen-fixing bacteria found in plants such as peas and beans?
#12. Which of these is a population?
#13. What is the name of the protein which moves particles across cell membranes during active transport?
#14. In active transport – are particles travelling with or against the concentration gradient?
#15. Is diffusion an active or a passive process?
#16. How do substances typically move into and out of the body, for example, oxygen in the lungs? ? 1 word answer
#17. The 5 kingdoms of life are Animals, Plants, Fungi, Protists and Prokaryotes. Which kingdom do algae belong to?
#18. The respiratory system relies on diffusion of oxygen and carbon dioxide. Which of the following statements are correct?
Select all that apply:
#19. What is the cell wall made from in bacteria?
#20. What is the difference between aerobic and anaerobic respiration?
#21. What is the role of lipase?
#22. Why does the rate of an enzyme controlled reaction go down as temperature increases past the optimum level?
#23. What are enzymes?
#24. Place the measurement units in order from from biggest to smallest. micrometres, picometres, kilometres, metres, nanometres, millemetres ? Use British Spelling - Metres* NOT Meters
#25. When fossil fuels are burned they release carbon into the atmosphere – which of the following are fossil fuels?
#26. How does nitrogen in plants get into the soil?
#27. Cardiac output is measured as the volume of blood pushed through the aorta each minute. Which is the correct equation for cardiac output?
#28. Which of the following sub-cellular structures provides structure and support for the cell?
Select all that apply:
#29. What do we call animals that only eat plants?
#30. Which of the following is the source of oil and gas?
#31. How do most plants get their nitrogen?
#32. What is the name of the chemicals that we use to transmit messages through the blood to organs?
#33. What is the role of receptors?
#34. 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.
#35. What is the role of ribosomes?
#36. Which of these are examples of blood vessels?
Select all that apply:
#37. What are cells that line structures in the body and have cilia?
#38. What is the role of the nucleus?
#39. Which of these is an effector?
#40. Producers are organisms which do what?
#41. What is the resolution of light microscopes limited by?
#42. Fill in the gap to complete the word equation for aerobic respiration. glucose + oxygen → ….. + water
#43. Which structures in the lungs increase the surface area and therefore the speed and amount of gas exchanged?
#44. Why does the rate of an enzyme controlled reaction plateau at a certain substrate concentration? ? plateau means level out
#45. What are the monomers of fats/lipids?
#46. What is the role of protease?
#47. Which type of factor is soil composition?
#48. Which type of white blood cell engulfs (surrounds) foreign cells in order to digest them?
#49. Is photosynthesis an endothermic or an exothermic reaction?
#50. Why is catalysis by enzymes important for life processes?
#51. Why is the Surface area : Volume ratio so important when it comes to exchange of substances?
#52. Which of the following descriptions best matches the hormonal system?
#53. When an impulse reaches an axon terminal what happens?
#54. What effect does adrenaline have on the liver?
#55. What does μm stand for?
#56. What are the monomers of proteins?
#57. Why does the rate of an enzyme controlled reaction increase with greater substrate concentration?
#58. What is the role of coronary arteries?
#59. Organs that exchange substances into and out of the body have:
#60. What is the role of the cell membrane?
Select all that apply:
#61. What is the function of white blood cells?
#62. The water cycle has one part where water is in solid form – what is that form of storage?
#63. Which system is responsible for ensuring the supply of oxygen and glucose to cells?
#64. Motor neurones carry impulses to which part of the nervous system?
#65. Which of the following features are found in arteries?
#66. Through which process would air in a space station move if someone opened a door to space?
#67. Which of these is a community?
#68. Through which process would air freshener sprayed in one corner of a room disperse?
#69. The pacemaker cells tell the heart when to beat, where are they located?
#70. What are the lower chambers of the heart called?
#71. What is enzyme specificity?
#72. What is the field of view of a microscope?
#73. What is the role of the central nervous system (CNS)?
#74. Is active transport an active or a passive process?
#75. Which square instrument do we use for randomly sampling population sizes?
#76. In osmosis – are particles travelling with or against the concentration gradient?
#77. Which hormone is released from the adrenal gland?
#78. Where are relay neurones found?
#79. Which type of factor is disease?
#80. What are two systems which allow your body to respond to its surroundings?
Select all that apply:
#81. Which type of factor is parasitism?
#82. Sensory neurones have a fatty layer of insulation, what is it called?
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#83. What is the definition of resolution?
#84. Which type of factor is competition?
#85. In some areas where there are poor soils (not enough nitrogen) carnivorous plants have adapted to get their nitrogen from which source?
#86. What is an advantage of anaerobic respiration?
#87. Which of these is a habitat?
#88. What are cilia?
#89. What do we mean by the distribution of organisms?
