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GCSE OCR Biology B Paper 1
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#1. In which part of the cell does anaerobic respiration take place?
#2. What are cilia?
#3. Oxygen enters the body via the?
#4. Which of these is a habitat?
#5. Why is the binomial naming system useful for scientists?
#6. When an impulse reaches an axon terminal what happens?
#7. Through which process would air freshener sprayed in one corner of a room disperse?
#8. What are cells that line structures in the body and have cilia?
#9. Which type of factor is nutrient availability?
#10. What is the role of the superior vena cava?
#11. What is the role of protease?
#12. What is the role of receptors?
#13. Which pathway is used when rapid automatic responses are needed by your body to external stimuli, like touching a hot object?
#14. True or false – A passive process is automatic and does not require energy?
#15. 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?
#16. Nitrogen is often found in a particular form in the soil what is this form?
#17. What are biotic factors?
#18. Which type of white blood cells produce antibodies that stick to the antigens of pathogens?
#19. The female gametes (egg cells) are adapted to their function. Which of the following are adaptations of egg cells?
Select all that apply:
#20. What effects does adrenaline have on the heart?
Select all that apply:
#21. What are abiotic factors?
#22. Which type of factor is disease?
#23. What are nitrogen-fixing bacteria?
#24. Which of the following is the source of oil and gas?
#25. What is stroke volume?
#26. In which sub-cellular structure inside plant cells does photosynthesis occur?
#27. How can we increase the accuracy of abundance estimates?
#28. How many chambers does the heart have?
#29. The binomial name for tigers is Felis tigris. Which part of the name represents the genus?
#30. Why is the rate of an enzyme controlled reaction lower at lower temperatures?
#31. What does μm stand for?
#32. What is the role of the acrosome on a sperm cell?
#33. Motor neurones carry impulses to which part of the nervous system?
#34. In osmosis – are particles travelling with or against the concentration gradient?
#35. Which hormone is released from the adrenal gland?
#36. 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:
#37. Where are relay neurones found?
#38. What is the Lock and Key Model of enzyme action?
#39. Which sub-cellular structures can be found in animals?
Select all that apply:
#40. Why does the rate of an enzyme controlled reaction plateau at a certain substrate concentration? ? plateau means level out
#41. What is the molecular formula for glucose?
#42. Which of the following are strategies organisms use to adapt to changing abiotic conditions?
Select all that apply:
#43. Organs that exchange substances into and out of the body have:
#44. Which of the following are factors that affect the rate of diffusion?
Select all that apply:
#45. 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.
#46. What are the lower chambers of the heart called?
#47. What is groundwater?
#48. What is the role of the nucleus?
#49. Which of these processes allows saltwater to become potable?
#50. Where does blood from the aorta travel to?
#51. Is respiration an exothermic or an endothermic reaction?
#52. Why is there a size limit to cells?
#53. The left ventricle has a thicker muscle wall, why is this the case?
#54. Name two resources that both animals and plants need to survive and reproduce? ? structure your answer like this: ..... and .....
#55. Which part of the heart separates the two sides?
#56. What are the three domains?
#57. Through which process do chemicals move across synapses?
#58. True or false – A concentration gradient is the difference in concentration from high to low?
#59. If grass is eaten by a rabbit and a rabbit is eaten by a hawk. What level of consumer is the hawk?
#60. What travels along neurones to pass information through the nervous system?
#61. Which parts of the heart and blood vessels stop blood from flowing in the wrong direction?
#62. What is the part of the heart that the arrows are pointing to?
#63. Which type of factor is predation?
#64. Fill in the gap to complete the word equation for aerobic respiration. glucose + oxygen → ….. + water
#65. Where does blood from the pulmonary artery travel to?
#66. Which structures in the lungs increase the surface area and therefore the speed and amount of gas exchanged?
#67. Through which process would air in a space station move if someone opened a door to space?
#68. Which of the following is part of the central nervous system (CNS)?
#69. Why is catalysis by enzymes important for life processes?
#70. Which of the following are 3 of the adaptations of leaves for efficient photosynthesis?
Select all that apply:
#71. Why is the Surface area : Volume ratio so important when it comes to exchange of substances?
#72. Which sub-cellular structures can be found in plants?
Select all that apply:
#73. Glucose enters the body via the?
#74. In active transport – are particles travelling with or against the concentration gradient?
#75. What do we call animals that are eaten by other animals?
#76. How do most plants get their nitrogen?
#77. What is the gap between neurones called?
#78. Why does the rate of an enzyme controlled reaction go down as temperature increases past the optimum level?
#79. Which of the following descriptions best matches the hormonal system?
#80. What is the role of the central nervous system (CNS)?
#81. What is the function of platelets?
#82. What is the role of lipase?
#83. Which of these is an effector?
#84. What is the process by which organisms remove waste from their bodies?
#85. By which process does water in the oceans and lakes move into the atmosphere?
#86. What natural source of nitrogen is sometimes added to fields by farmers?
#87. What is the role of effectors?
#88. Which of the following features are found in veins?
#89. Sometimes it is not possible to measure the number of organisms in a transect, for example when measuring the distribution of plants. In this case we use an alternative measure called what?
#90. What groups of organisms belong to the domain – eukaryotes? ? Eukaryotes have a membrane bound nucleus
Select all that apply: