GCSE OCR Biology A Papers 1 and 3

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OCR Biology A Papers 1 and 3

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OCR Biology A Papers 1 and 3

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#1. Which of the following features are found in veins?

#2. What are two systems which allow your body to respond to its surroundings?

Select all that apply:

#3. Which of the following features are found in arteries?

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

#5. Which of the following are prokaryotes?

Select all that apply:

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

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

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

#9. Which sub-cellular structures can be found in animals?

Select all that apply:

#10. Why is there a size limit to cells?

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

#12. What travels along neurones to pass information through the nervous system?

#13. What is the heart rate measured in?

Heart Diagram missing right atrium

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

#15. Which of these is an effector?

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

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

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

#19. Is diffusion an active or a passive process?

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

The Heart GCSE

#21. Where does blood from the pulmonary artery travel to?

#22. What is the role of glycogen synthase?

#23. Glucose enters the body via the?

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

Select all that apply:

#25. Surfaces where diffusion takes place allowing substances to enter the body usually have which characteristics?

Select all that apply:

#26. What is the role of the nucleus?

#27. Which of the following are waste products produced by the body?

Select all that apply:

#28. What is enzyme specificity?

#29. What effect does adrenaline have on the liver?

#30. What is the role of DNA synthase?

#31. What are the monomers of carbohydrates?

#32. How are cells that line the small intestine specialised?

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

#34. What is an advantage of anaerobic respiration?

#35. What is the cell wall made from in plants?

#36. What is an active site?

#37. The Nervous System is made up of two parts, the Central Nervous System (CNS) and what other part?

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#38. The respiratory system relies on diffusion of oxygen and carbon dioxide. Which of the following statements are correct?

Select all that apply:

#39. What is the role of the acrosome on a sperm cell?

#40. Which of the following is an effect stimulated by the thyroxine hormone?

#41. Cells are adapted to perform a specific function. Why do cells in the pancreas have lots of ribosomes?

#42. Where are relay neurones found?

#43. What are the monomers of proteins?

#44. Palisade cells are found just below the epidermis of leaves. What is their role and how are they adapted to perform it?

#45. What is the role of the inferior vena cava?

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

#47. Which sub-cellular structures can be found in plants?

Select all that apply:

#48. What is the difference between aerobic and anaerobic respiration?

#49. What is the role of coronary arteries?

#50. The pacemaker cells tell the heart when to beat, where are they located?

The Heart GCSE

#51. Where does blood entering the heart through the pulmonary veins come from?

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

#53. Bacterial cells commonly have a flagellum. What is the role of this structure?

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

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

#56. True or false – A passive process is automatic and does not require energy?

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

#58. Which hormone is released from the adrenal gland?

#59. In diffusion – are particles travelling with or against the concentration gradient?

#60. Why do high breathing and heart rates remain after exercise?

Select all that apply:

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

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

#63. What is the role of effectors?

#64. Through which process would air freshener sprayed in one corner of a room disperse?

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

#66. Which of the following describes metabolic rate?

#67. Through which process do chemicals move across synapses?

#68. Arteries carry blood around the body, do they carry blood away from or towards the heart?

Remember – Arteries Away

#69. 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.

#70. What is the purpose of respiration?

#71. Anaerobic respiration does not involve oxygen. Select the correct word equation for anaerobic respiration.

#72. Which parts of the heart and blood vessels stop blood from flowing in the wrong direction?

#73. Which of the following sub-cellular structures provides structure and support for the cell?

Select all that apply:

#74. What is the role of amylase?

#75. 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.

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

#77. Which of the following are factors that affect the rate of diffusion?

Select all that apply:

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

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The Heart GCSE

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

#80. Which of these is an effector?

#81. Growth hormone stimulates cells in muscles and bones to divide. It also stimulates another system, which system is this?

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

#83. What is the name of the chemicals that we use to transmit messages through the blood to organs?

#84. What is the function of red blood cells (Erythrocytes)?

#85. In what part of the cells does aerobic respiration take place?

#86. What is enzyme activity?

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

#88. What is stroke volume measured in?

#89. Motor neurones carry impulses to which part of the nervous system?

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

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