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 is part of the central nervous system (CNS)?

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

Select all that apply:

GCSE heart diagram missing aorta

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

#4. What is the role of starch synthase?

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

Select all that apply:

#6. Name one hormone that is released from the ovaries?

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

Select all that apply:

#8. Which part of the heart separates the two sides?

#9. Which pathway is used when rapid automatic responses are needed by your body to external stimuli, like touching a hot object?

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

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

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

#13. The drug called Digitalis slows the heart rate. Where does the drug come from?

#14. What is the resolution of electron microscopes limited by?

#15. What are substrates?

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

#17. What is the role of amylase?

#18. What are the monomers of proteins?

#19. Through which process would air in a space station move if someone opened a door to space?

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

The Heart GCSE

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

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

#23. What does μm stand for?

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

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

#26. What is stroke volume?

#27. What is an advantage of anaerobic respiration?

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

#29. Organs that exchange substances into and out of the body have:

#30. Name one hormone that is produced in the pancreas?

#31. What is the role of coronary arteries?

#32. What are enzymes?

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

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

Select all that apply:

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

#36. When an impulse reaches an axon terminal what happens?

#37. How many chambers does the heart have?

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

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

#40. What is the role of protease?

#41. Through which process do nutrients enter root hair cells from the soil?

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

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

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

#45. What is the process by which organisms remove waste from their bodies?

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

#47. Urea is produced when amino acids are broken down. Which organ processes urea?

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

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

#50. What is enzyme specificity?

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

Select all that apply:

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

Select all that apply:

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

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

Select all that apply:

#55. What is the role of glycogen synthase?

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

#57. Oxygen enters the body via the?

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

#59. What are the monomers of carbohydrates?

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

#61. What is the function of plasma?

#62. Which structures in the lungs increase the surface area and therefore the speed and amount of gas exchanged?

The Heart GCSE

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

#64. What is the heart rate measured in?

#65. In osmosis – are particles travelling with or against the concentration gradient?

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

Remember – Arteries Away

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

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

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

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

#71. Which of these is an effector?

#72. When is adrenaline released?

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

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

#75. What is the role of the nucleus?

#76. What is stroke volume measured in?

#77. What is the purpose of respiration?

#78. 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?

#79. Which of the following describes metabolic rate?

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

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

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

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

#84. Hormones are released by a range of glands, name one gland that releases hormones. ? do not include the word "gland" or "glands"

#85. Where are relay neurones found?

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

#87. The left ventricle has a thicker muscle wall, why is this the case?

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

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

Select all that apply:

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

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