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GCSE OCR Biology B Paper 2
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#1. Which of the following descriptions best matches the hormonal system?
#2. Which type of factor is soil composition?
#3. The binomial name for tigers is Felis tigris. Which part of the name represents the genus?
#4. By which process does water in the atmosphere become part of clouds?
#5. What is the function of white blood cells?
#6. What do we call animals that are eaten by other animals?
#7. How many chambers does the heart have?
#8. Which of the following is part of the central nervous system (CNS)?
#9. What is the role of starch synthase?
#10. Hormones are released by a range of glands, name one gland that releases hormones. ? do not include the word "gland" or "glands"
#11. Where are nitrogen-fixing bacteria found in plants such as peas and beans?
#12. Which of the following are 3 of the adaptations of leaves for efficient photosynthesis?
Select all that apply:
#13. What is meant by an active process?
#14. 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?
#15. How much of the atmosphere is composed of nitrogen?
#16. 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?
#17. What is the role of ribosomes?
#18. What is the role of protease?
#19. Which of these is a population?
#20. Why is there a size limit to cells?
#21. Which of these is an effector?
#22. What is the role of coronary arteries?
#23. What do we call animals that eat both other animals and plants?
#24. Through which process would air freshener sprayed in one corner of a room disperse?
#25. What travels along neurones to pass information through the nervous system?
#26. What are abiotic factors?
#27. Why does the rate of an enzyme controlled reaction go down as temperature increases past the optimum level?
#28. Anaerobic respiration does not involve oxygen. Select the correct word equation for anaerobic respiration.
#29. Where does blood entering the heart through the pulmonary veins come from?
#30. Which of the following is the equation for total magnification?
#31. 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:
#32. Fill in the gap to complete the word equation for aerobic respiration. glucose + oxygen → ….. + water
#33. What do we mean by the distribution of organisms?
#34. Which pathway is used when rapid automatic responses are needed by your body to external stimuli, like touching a hot object?
#35. Which of the following is an effect stimulated by the thyroxine hormone?
#36. How are cells that line the small intestine specialised?
#37. Predators are essential for healthy ecosystems – what happens if predators are removed due to extinction?
#38. In which part of the cell does anaerobic respiration take place?
#39. What is enzyme activity?
#40. What is the part of the heart that the arrows are pointing to?
#41. Which type of factor is air temperature?
#42. What is the role of DNA synthase?
#43. What is the heart rate measured in?
#44. What is the function of the cell wall?
#45. The male gametes (sperm cells) are adapted to their function. Which of the following are adaptations of sperm cells?
Select all that apply:
#46. The drug called Digitalis slows the heart rate. Where does the drug come from?
#47. Which type of factor is pollution?
#48. How does nitrogen in plants get into the soil?
#49. Match the description to the correct term. All of the organisms that live in a particular pond.
#50. Which term do we use to describe the relationships between species that depend on each other for resources?
#51. Through which process do nutrients enter root hair cells from the soil?
#52. What does abundance measure?
#53. By which process does water in the clouds move onto land?
#54. What is the name of the chemicals that we use to transmit messages through the blood to organs?
#55. Which sub-cellular structures can be found in plants?
Select all that apply:
#56. Which of the following plants have a mutualistic relationship with nitrogen-fixing bacteria?
Select all that apply:
#57. Fill in the gap: Receptors detect pain and send impulses via the sensory neurone towards the spinal cord. The ………………… intercepts the signal and diverts it along motor neurones to the effectors (muscles) which quickly move away from the source of pain.
#58. Complete the equation used to calculate population size: population size = ………….. x total size of it habitat / total area of quadrats
#59. What natural source of nitrogen is sometimes added to fields by farmers?
#60. Producers are organisms which do what?
#61. Which of these is an ecosystem?
#62. What are nitrogen-fixing bacteria?
#63. Which type of factor is disease?
#64. What is the role of amylase?
#65. Palisade cells are found just below the epidermis of leaves. What is their role and how are they adapted to perform it?
#66. Is respiration an exothermic or an endothermic reaction?
#67. 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.
#68. Is the following statement accurate: nitrogen be can be moved back and forth from the atmosphere and into the soil by bacteria.
#69. What is the Induced Fit Model of enzyme action?
#70. True or false – volcanism removes carbon from the atmosphere
#71. Which of these is a habitat?
#72. Which of the following is the source of oil and gas?
#73. What is the cell wall made from in plants?
#74. Specialised cells have different compositions of sub cellular structures in order to perform their role. Why would specialised cells have lots of mitochondria?
#75. What is the name of the protein which moves particles across cell membranes during active transport?
#76. What are biotic factors?
#77. Which of these substances is sometimes added to water to make it potable?
#78. By which process does water in the oceans and lakes move into the atmosphere?
#79. We sometimes use a transect to perform systematic sampling. This involves which of the following?
#80. Which are the two kinds of sampling we normally use?
Select all that apply:
#81. Which type of factor is water availability?
#82. Which of the following are factors that affect the rate of diffusion?
Select all that apply:
#83. Growth hormone stimulates cells in muscles and bones to divide. It also stimulates another system, which system is this?
#84. What is the role of the inferior vena cava?
#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 groups of organisms belong to the domain – eukaryotes? ? Eukaryotes have a membrane bound nucleus
Select all that apply: