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GCSE OCR Biology B Paper 1
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#1. In osmosis - are particles travelling with or against the concentration gradient?
#2. Where does blood from the aorta travel to?
#3. Which of these is an effector?
#4. Why does the rate of an enzyme controlled reaction plateau at a certain substrate concentration? ? plateau means level out
#5. Which of the following are the 4 factors that affect the rate of photosynthesis?
Select all that apply:
#6. Is osmosis an active or a passive process?
#7. Why do plants need oxygen?
#8. What do we call animals that only eat plants?
#9. What are the monomers of carbohydrates?
#10. What is the molecular formula for glucose?
#11. What groups of organisms belong to the domain - eukaryotes? ? Eukaryotes have a membrane bound nucleus
Select all that apply:
#12. Which of these are examples of blood vessels?
Select all that apply:
#13. What is the role of DNA synthase?
#14. Growth hormone stimulates cells in muscles and bones to divide. It also stimulates another system, which system is this?
#15. What is the field of view of a microscope?
#16. When an impulse reaches an axon terminal what happens?
#17. What are the upper chambers of the heart called?
#18. What are the monomers of fats/lipids?
#19. Which description most accurately describes osmosis?
#20. Why is the rate of an enzyme controlled reaction highest at an optimum pH?
#21. Which parts of the heart and blood vessels stop blood from flowing in the wrong direction?
#22. Which term do we use to describe the relationships between species that depend on each other for resources?
#23. Where does blood from the pulmonary artery travel to?
#24. Which type of factor is pollution?
#25. Which of the following is an effect stimulated by the thyroxine hormone?
#26. What are enzymes?
#27. In which part of the cell does anaerobic respiration take place?
#28. Which of the following are waste products produced by the body?
Select all that apply:
#29. By which process does water in the atmosphere become part of clouds?
#30. What do we call the process by which farmers change the crops they grow each year to maintain nitrogen in the soil?
#31. In what part of the cells does aerobic respiration take place?
#32. Which organisms maintain the nitrogen levels in the soil?
#33. Where are relay neurones found?
#34. Which sub-cellular structures can be found in animals?
Select all that apply:
#35. What is the function of red blood cells (Erythrocytes)?
#36. Fill in the gap to complete the word equation for aerobic respiration. glucose + oxygen → ..... + water
#37. What is the role of the central nervous system (CNS)?
#38. What is the part of the heart that the arrows are pointing to?
#39. How many chambers does the heart have?
#40. What is the name of the protein which moves particles across cell membranes during active transport?
#41. 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?
#42. The left ventricle has a thicker muscle wall, why is this the case?
#43. What does μm stand for?
#44. What do we call an organ that is affected by a specific hormone?
#45. The drug called Digitalis slows the heart rate. Where does the drug come from?
#46. What are biotic factors?
#47. What is the balanced chemical equation for photosynthesis?
#48. Hormones are released by a range of glands, name one gland that releases hormones. ? do not include the word "gland" or "glands"
#49. Which type of factor is nutrient availability?
#50. True or false - A concentration gradient is a term used to explain how the moon moves in the night sky?
#51. Electron microscopes have much higher resolution and magnification than light microscopes. What are the advantages of this?
#52. What is the name of the chemicals that we use to transmit messages through the blood to organs?
#53. Why do high breathing and heart rates remain after exercise?
Select all that apply:
#54. If grass is eaten by a rabbit and a rabbit is eaten by a hawk. What level of consumer is the hawk?
#55. 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?
#56. True or false - plants remove carbon from the atmosphere during photosynthesis
#57. Which of the following are prokaryotes?
Select all that apply:
#58. Urea is produced when amino acids are broken down. Which organ processes urea?
#59. Which of the following is the source of coal?
#60. What are the three domains?
#61. The pacemaker cells tell the heart when to beat, where are they located?
#62. What are the monomers of proteins?
#63. What is the role of the superior vena cava?
#64. Bacterial cells commonly have a flagellum. What is the role of this structure?
#65. When fossil fuels are burned they release carbon into the atmosphere - which of the following are fossil fuels?
#66. 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:
#67. What is the cell wall made from in bacteria?
#68. 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.
#69. Which of these is a population?
#70. When is adrenaline released?
#71. Which of the following is the correct word equation for aerobic respiration?
#72. Which are the two kinds of sampling we normally use?
Select all that apply:
#73. What are cilia?
#74. Arteries carry blood around the body, do they carry blood away from or towards the heart?
Remember – Arteries Away
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#75. How do most plants get their nitrogen?
#76. What is the difference between aerobic and anaerobic respiration?
#77. What is the role of the inferior vena cava?
#78. True or false - volcanism removes carbon from the atmosphere
#79. Which of these is the correct explanation for why photosynthesis is slower at lower temperatures?
#80. Which of the following is part of the central nervous system (CNS)?
#81. Which square instrument do we use for randomly sampling population sizes?
#82. Who invented the binomial naming system?
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#83. What travels along neurones to pass information through the nervous system?
#84. Growth is increased during puberty. Why is this?
#85. Which of these is an ecosystem?
#86. What do we call animals that eat both other animals and plants?
#87. We sometimes use a transect to perform systematic sampling. This involves which of the following?
#88. What is the Induced Fit Model of enzyme action?
#89. What is the part of the heart that the arrows are pointing to?
#90. In diffusion - are particles travelling with or against the concentration gradient?
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