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

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

#3. What is the role of the central nervous system (CNS)?

#4. What are the monomers of carbohydrates?

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

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

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

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

#9. What is the function of plasma?

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

Select all that apply:

#11. What is the role of ribosomes?

#12. What is the gap between neurones called?

#13. What is stroke volume?

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

#15. Which description most accurately describes osmosis?

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

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

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

#19. Fill in the gap to complete the word equation for aerobic respiration. glucose + oxygen → ….. + water

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

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

Select all that apply:

The Heart GCSE

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

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

#24. What effects does adrenaline have on the heart?

Select all that apply:

#25. What is the function of white blood cells?

#26. What is the role of receptors?

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

#28. What is the heart rate measured in?

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

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

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

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

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

Select all that apply:

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

#35. What is the role of effectors?

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

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

3

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

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

#40. What is the role of DNA synthase?

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

#42. What is the role of glycogen synthase?

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

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

#45. Which of the following are prokaryotes?

Select all that apply:

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

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

Select all that apply:

#48. What are substrates?

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

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

#51. The female gametes (egg cells) are adapted to their function. Which of the following are adaptations of egg cells?

Select all that apply:

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

#53. 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.

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

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

#56. When is adrenaline released?

#57. What is the role of coronary arteries?

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

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

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

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

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

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

#64. Oxygen enters the body via the?

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

Select all that apply:

#66. What is the role of the nucleus?

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

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

Select all that apply:

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

#70. 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.

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

Select all that apply:

#72. Which of these is an effector?

#73. Where are relay neurones found?

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

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

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

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

Select all that apply:

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

Heart Diagram missing right atrium

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

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

Select all that apply:

#81. What is an advantage of anaerobic respiration?

#82. What is the role of amylase?

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

#84. What is the definition of resolution?

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

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

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

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

The Heart GCSE

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

#90. What is stroke volume measured in?

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