GCSE OCR Biology B Paper 1

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OCR Biology B Paper 1

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OCR Biology B Paper 1

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#1. Which type of white blood cell engulfs (surrounds) foreign cells in order to digest them?

#2. Which of these is a community?

#3. Place the measurement units in order from from biggest to smallest. micrometres, picometres, kilometres, metres, nanometres, millemetres ? Use British Spelling - Metres* NOT Meters

#4. What is the role of receptors?

#5. Why is the Surface area : Volume ratio so important when it comes to exchange of substances?

#6. Capillaries are only one cell thick and have thousands of branches. What is the function of capillaries?

#7. What is the function of platelets?

#8. How can we increase the accuracy of abundance estimates?

#9. In which part of the cell does anaerobic respiration take place?

#10. Which system is responsible for ensuring the supply of oxygen and glucose to cells?

#11. Which of the following plants have a mutualistic relationship with nitrogen-fixing bacteria?

Select all that apply:

#12. In some areas where there are poor soils (not enough nitrogen) carnivorous plants have adapted to get their nitrogen from which source?

#13. What is the Induced Fit Model of enzyme action?

#14. What are the three domains?

The Heart GCSE

#15. Where does blood from the aorta travel to?

#16. What are the monomers of fats/lipids?

#17. Where are nitrogen-fixing bacteria found in plants such as peas and beans?

#18. Which are the two kinds of sampling we normally use?

Select all that apply:

#19. Why does the rate of an enzyme controlled reaction increase with greater substrate concentration?

#20. What is the field of view of a microscope?

#21. Which sub-cellular structures can be found in bacteria?

Select all that apply:

#22. Is the following statement accurate? Lightning can cause atmospheric nitrogen to be released into the rain and be washed into the soil?

#23. What is the name of the protein which moves particles across cell membranes during active transport?

#24. When fossil fuels are burned they release carbon into the atmosphere – which of the following are fossil fuels?

#25. What is the role of the cell membrane?

Select all that apply:

#26. Is osmosis an active or a passive process?

#27. What is the cell wall made from in bacteria?

#28. Which of these is an ecosystem?

#29. What is the Lock and Key Model of enzyme action?

#30. What is stroke volume?

#31. Specialised cells have different compositions of sub cellular structures in order to perform their role. Why would specialised cells have lots of mitochondria?

#32. Which hormone is associated with the “fight or flight” response?

#33. Which of the following are the 4 factors that affect the rate of photosynthesis?

Select all that apply:

#34. What is the heart rate measured in?

#35. Why can humans only survive a few days without water?

#36. Finish the sentence: Nitrogen compounds found in artificial fertilisers are ……… and dissolve in the soil’s water.

#37. Which of the following descriptions best matches the hormonal system?

#38. Cardiac output is measured as the volume of blood pushed through the aorta each minute. Which is the correct equation for cardiac output?

#39. What is the role of amylase?

#40. Which process in the body produces carbon dioxide?

#41. What is the role of coronary arteries?

#42. True or false – A concentration gradient is the difference in concentration from high to low?

#43. What is the gap between neurones called?

#44. What is the role of starch synthase?

#45. What are the upper chambers of the heart called?

#46. What are the lower chambers of the heart called?

#47. The water cycle has one part where water is in solid form – what is that form of storage?

#48. When is adrenaline released?

#49. Why do plants need oxygen?

#50. How many chromosomes does a single sperm cell have?

#51. Which of the following is part of the central nervous system (CNS)?

#52. Which of the following is the source of oil and gas?

#53. Increases in thyroxine concentration in the blood cause a decrease in the amount of thyroxine released. What kind of feedback mechanism is this?

#54. What natural source of nitrogen is sometimes added to fields by farmers?

#55. Which type of factor is pollution?

#56. Which of these are examples of blood vessels?

Select all that apply:

#57. What is the function of the cell wall?

Heart Diagram missing right atrium

#58. What is the part of the heart that the arrows are pointing to?

#59. Why is the rate of an enzyme controlled reaction highest at an optimum pH?

#60. In active transport – are particles travelling with or against the concentration gradient?

#61. What is the resolution of light microscopes limited by?

#62. Sensory neurones have a fatty layer of insulation, what is it called?

1

#63. The male gametes (sperm cells) are adapted to their function. Which of the following are adaptations of sperm cells?

Select all that apply:

#64. What do we call animals that are eaten by other animals?

#65. What is the role of the superior vena cava?

#66. Which of the following can we use to investigate the effect of abiotic factors on the distribution of organisms?

#67. Which of the following is the correct word equation for aerobic respiration?

#68. Which type of factor is air temperature?

#69. Why is catalysis by enzymes important for life processes?

#70. Electron microscopes have much higher resolution and magnification than light microscopes. What are the advantages of this?

#71. What does abundance measure?

#72. Is active transport an active or a passive process?

#73. Which of the following is the equation for total magnification?

#74. Which type of factor is parasitism?

#75. True or false – A concentration gradient is a term used to explain how the moon moves in the night sky?

#76. If grass is eaten by a rabbit and a rabbit is eaten by a hawk. What level of consumer is the hawk?

#77. Where does the water in lakes and rivers end up?

#78. Is respiration an exothermic or an endothermic reaction?

#79. Which type of factor is disease?

#80. Which type of factor is water availability?

#81. Growth is increased during puberty. Why is this?

#82. Which type of white blood cells produce antibodies that stick to the antigens of pathogens?

#83. What are cells that line structures in the body and have cilia?

#84. The 5 kingdoms of life are Animals, Plants, Fungi, Protists and Prokaryotes. Which kingdom do algae belong to?

#85. Respiration from animals is a source of carbon dioxide in the atmosphere – do plants also use respiration?

#86. What is an advantage of anaerobic respiration?

#87. What is stroke volume measured in?

#88. Which description most accurately describes osmosis?

#89. Producers are organisms which do what?

#90. By which process does water in the clouds move onto land?

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