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GCSE OCR Biology B Paper 1
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#1. In which sub-cellular structure inside plant cells does photosynthesis occur?
#2. Why do plants need oxygen?
#3. By which process does water in the atmosphere become part of clouds?
#4. Through which process would air in a space station move if someone opened a door to space?
#5. In what part of the cells does aerobic respiration take place?
#6. 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:
#7. Urea is produced when amino acids are broken down. Which organ processes urea?
#8. The binomial name for tigers is Felis tigris. Which part of the name represents the genus?
#9. In active transport – are particles travelling with or against the concentration gradient?
#10. Which type of white blood cells produce antibodies that stick to the antigens of pathogens?
#11. Which of the following features are found in arteries?
#12. 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?
#13. How does nitrogen in plants get into the soil?
#14. What is the gap between neurones called?
#15. The Nervous System is made up of two parts, the Central Nervous System (CNS) and what other part?
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#16. Complete the equation used to calculate population size: population size = ………….. x total size of it habitat / total area of quadrats
#17. What are cilia?
#18. Why do plants need nitrogen?
#19. Oxygen enters the body via the?
#20. Resting metabolic rate is measured under which of the following conditions?
Select all that apply:
#21. What is meant by an active process?
#22. Growth is increased during puberty. Why is this?
#23. Is diffusion an active or a passive process?
#24. Through which process do chemicals move across synapses?
#25. Is the following statement accurate? Lightning can cause atmospheric nitrogen to be released into the rain and be washed into the soil?
#26. Specialised cells have different compositions of sub cellular structures in order to perform their role. Why would specialised cells have lots of mitochondria?
#27. How can we increase the accuracy of abundance estimates?
#28. By which process does water in the oceans and lakes move into the atmosphere?
#29. Sensory neurones have a fatty layer of insulation, what is it called?
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#30. What is groundwater?
#31. Which of these processes allows saltwater to become potable?
#32. Is the following statement accurate: nitrogen be can be moved back and forth from the atmosphere and into the soil by bacteria.
#33. Which type of factor is water availability?
#34. Finish the sentence: Nitrogen compounds found in artificial fertilisers are ……… and dissolve in the soil’s water.
#35. Why do high breathing and heart rates remain after exercise?
Select all that apply:
#36. Cardiac output is measured as the volume of blood pushed through the aorta each minute. Which is the correct equation for cardiac output?
#37. Capillaries are only one cell thick and have thousands of branches. What is the function of capillaries?
#38. In some areas where there are poor soils (not enough nitrogen) carnivorous plants have adapted to get their nitrogen from which source?
#39. Which of the following sub-cellular structures provides structure and support for the cell?
Select all that apply:
#40. Why is there a size limit to cells?
#41. Which of these are examples of blood vessels?
Select all that apply:
#42. What is the function of plasma?
#43. Which of these is a habitat?
#44. What are abiotic factors?
#45. 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.
#46. What is the part of the heart that the arrows are pointing to?
#47. Which of the following plants have a mutualistic relationship with nitrogen-fixing bacteria?
Select all that apply:
#48. True or false – volcanism removes carbon from the atmosphere
#49. Where are relay neurones found?
#50. Which of these is an effector?
#51. Which hormone is released from the adrenal gland?
#52. What effect does adrenaline have on the liver?
#53. Which of the following are factors that affect the rate of diffusion?
Select all that apply:
#54. Electron microscopes have much higher resolution and magnification than light microscopes. What are the advantages of this?
#55. What are the upper chambers of the heart called?
#56. Decomposers break down dead animal and plant material – what happens to the carbon inside the dead organisms?
#57. The respiratory system relies on diffusion of oxygen and carbon dioxide. Which of the following statements are correct?
Select all that apply:
#58. Which parts of the heart and blood vessels stop blood from flowing in the wrong direction?
#59. Which sub-cellular structures can be found in animals?
Select all that apply:
#60. Which hormone is associated with the “fight or flight” response?
#61. What is the role of receptors?
#62. What is the role of the cell membrane?
Select all that apply:
#63. What are biotic factors?
#64. What is the function of platelets?
#65. What is the role of coronary arteries?
#66. 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?
#67. What is stroke volume?
#68. Name one hormone that is released from the ovaries?
#69. Which process in the body produces carbon dioxide?
#70. Which type of factor is competition?
#71. Which of these is a community?
#72. How do substances typically move into and out of the body, for example, oxygen in the lungs? ? 1 word answer
#73. What is the role of glycogen synthase?
#74. Which of the following are strategies organisms use to adapt to changing abiotic conditions?
Select all that apply:
#75. Why is catalysis by enzymes important for life processes?
#76. What is the part of the heart that the arrows are pointing to?
#77. The female gametes (egg cells) are adapted to their function. Which of the following are adaptations of egg cells?
Select all that apply:
#78. Through which process do nutrients enter root hair cells from the soil?
#79. Which type of factor is pollution?
#80. Glucose enters the body via the?
#81. The male gametes (sperm cells) are adapted to their function. Which of the following are adaptations of sperm cells?
Select all that apply:
#82. What are nitrogen-fixing bacteria?
#83. What are substrates?
#84. What is the role of protease?
#85. What is the process by which organisms remove waste from their bodies?
#86. Which of the following is an effect stimulated by the thyroxine hormone?
#87. What is the equation for magnification?
There are two equations for magnification, both tell you how many times larger the image appears than it actually is.
One equation links the magnification of the two lenses and the other equation links magnification to the size of the object and image.