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GCSE OCR Biology B Paper 1
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#1. Is the following statement accurate: nitrogen be can be moved back and forth from the atmosphere and into the soil by bacteria.
#2. Electron microscopes have much higher resolution and magnification than light microscopes. What are the advantages of this?
#3. How do we describe the periodic changes in population size of predators and prey – explained by increases in numbers of predators due to increased numbers of prey and then decreasing numbers of prey due to increasing numbers of predators and so on?
#4. What are the monomers of carbohydrates?
#5. What are cilia?
#6. Which square instrument do we use for randomly sampling population sizes?
#7. The 5 kingdoms of life are Animals, Plants, Fungi, Protists and Prokaryotes. Which kingdom do algae belong to?
#8. Name one hormone that is produced in the pancreas?
#9. Growth hormone stimulates cells in muscles and bones to divide. It also stimulates another system, which system is this?
#10. What do we call the process by which farmers change the crops they grow each year to maintain nitrogen in the soil?
#11. Producers are organisms which do what?
#12. What is an active site?
#13. Which of the following are strategies organisms use to adapt to changing abiotic conditions?
Select all that apply:
#14. Which of these processes allows saltwater to become potable?
#15. What natural source of nitrogen is sometimes added to fields by farmers?
#16. Why is the rate of an enzyme controlled reaction lower at lower temperatures?
#17. Organs that exchange substances into and out of the body have:
#18. What is the function of red blood cells (Erythrocytes)?
#19. Which type of factor is pollution?
#20. How much of the atmosphere is composed of nitrogen?
#21. What is the cell wall made from in plants?
#22. 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?
#23. True or false – carbon dioxide is removed from the atmosphere as it dissolves in the oceans?
#24. What is the correct order of groups in the Linnaean Classification system?
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#25. Why is catalysis by enzymes important for life processes?
#26. What is the function of platelets?
#27. Which pathway is used when rapid automatic responses are needed by your body to external stimuli, like touching a hot object?
#28. Fill in the gap to complete the word equation for aerobic respiration. glucose + oxygen → ….. + water
#29. Which sub-cellular structures can be found in plants?
Select all that apply:
#30. Is respiration an exothermic or an endothermic reaction?
#31. Arteries carry blood around the body, do they carry blood away from or towards the heart?
Remember – Arteries Away
#32. Which of these are examples of blood vessels?
Select all that apply:
#33. Which type of factor is nutrient availability?
#34. Which of these is a habitat?
#35. When is adrenaline released?
#36. What are the monomers of fats/lipids?
#37. How many chromosomes does a single sperm cell have?
#38. What is the role of coronary arteries?
#39. Which of these is the correct explanation for why photosynthesis is slower at lower temperatures?
#40. Which of these is an effector?
#41. What do we call animals that are eaten by other animals?
#42. Place the measurement units in order from from biggest to smallest. micrometres, picometres, kilometres, metres, nanometres, millemetres ? Use British Spelling - Metres* NOT Meters
#43. Why is the Surface area : Volume ratio so important when it comes to exchange of substances?
#44. How do most plants get their nitrogen?
#45. Which of the following is the correct word equation for aerobic respiration?
#46. What is the role of the cell membrane?
Select all that apply:
#47. Which type of factor is air temperature?
#48. What is potable water?
#49. 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?
#50. Which hormone is associated with the “fight or flight” response?
#51. Oxygen enters the body via the?
#52. 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:
#53. Which of the following are prokaryotes?
Select all that apply:
#54. Where does the water in lakes and rivers end up?
#55. Which of the following descriptions best matches the hormonal system?
#56. Is diffusion an active or a passive process?
#57. What is the function of plasma?
#58. Which of the following is an effect stimulated by the thyroxine hormone?
#59. In osmosis – are particles travelling with or against the concentration gradient?
#60. True or false – volcanism removes carbon from the atmosphere
#61. In some areas where there are poor soils (not enough nitrogen) carnivorous plants have adapted to get their nitrogen from which source?
#62. Which type of factor is soil composition?
#63. Which sub-cellular structures can be found in animals?
Select all that apply:
#64. How do substances typically move into and out of the body, for example, oxygen in the lungs? ? 1 word answer
#65. Why is the rate of an enzyme controlled reaction highest at an optimum pH?
#66. Through which process do nutrients enter root hair cells from the soil?
#67. The female gametes (egg cells) are adapted to their function. Which of the following are adaptations of egg cells?
Select all that apply:
#68. Why is the binomial naming system useful for scientists?
#69. The water cycle has one part where water is in solid form – what is that form of storage?
#70. Why is there a size limit to cells?
#71. Decomposers break down dead animal and plant material – what happens to the carbon inside the dead organisms?
#72. Specialised cells have different compositions of sub cellular structures in order to perform their role. Why would specialised cells have lots of mitochondria?
#73. Which of the following describes metabolic rate?
#74. Which of the following features are found in arteries?
#75. What is the role of lipase?
#76. Which of the following features are found in veins?
#77. What groups of organisms belong to the domain – eukaryotes? ? Eukaryotes have a membrane bound nucleus
Select all that apply:
#78. If grass is eaten by a rabbit and a rabbit is eaten by a hawk. What level of consumer is the hawk?
#79. What are cells that line structures in the body and have cilia?
#80. Which of the following is the source of oil and gas?
#81. Which of the following are 3 of the adaptations of leaves for efficient photosynthesis?
Select all that apply:
Remember to carefully read the question, if you selected Root hair cells, you were mistaken because the question asked about leaves, not roots.
#82. The Nervous System is made up of two parts, the Central Nervous System (CNS) and what other part?
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#83. Is photosynthesis an endothermic or an exothermic reaction?
#84. Hormones are released by a range of glands, name one gland that releases hormones. ? do not include the word "gland" or "glands"
#85. What effects does adrenaline have on the heart?
Select all that apply:
#86. What is the function of the cell wall?
#87. Which of these is a population?
#88. What travels along neurones to pass information through the nervous system?
#89. Which are the two kinds of sampling we normally use?
Select all that apply: