Mock test. 1 hour and 10 minutes. 60 marks available.
Each time the test is taken it will present different questions.
GCSE OCR Combined Science A Papers 1 and 7
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Why not try another Science Mock Exam and see how well you do?
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#1. In diffusion - are particles travelling with or against the concentration gradient?
#2. What effect does adrenaline have on the liver?
#3. What is the function of white blood cells?
#4. Specialised cells have different compositions of sub cellular structures in order to perform their role. Why would specialised cells have lots of mitochondria?
#5. What is the resolution of electron microscopes limited by?
#6. Sensory neurones have a fatty layer of insulation, what is it called?
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#7. What are the upper chambers of the heart called?
#8. Which of the following are 3 of the adaptations of leaves for efficient photosynthesis?
Select all that apply:
#9. Urea is produced when amino acids are broken down. Which organ processes urea?
#10. What are cilia?
#11. What do we call an organ that is affected by a specific hormone?
#12. What are the lower chambers of the heart called?
#13. What is the name of the protein which moves particles across cell membranes during active transport?
#14. What is the role of amylase?
#15. Electron microscopes have much higher resolution and magnification than light microscopes. What are the advantages of this?
#16. Name one hormone that is produced in the pancreas?
#17. What is the field of view of a microscope?
#18. Which of the following are waste products produced by the body?
Select all that apply:
#19. Is osmosis an active or a passive process?
#20. What is the role of the superior vena cava?
#21. What is stroke volume measured in?
#22. Name one hormone that is released from the ovaries?
#23. Increases in thyroxine concentration in the blood cause a decrease in the amount of thyroxine released. What kind of feedback mechanism is this?
#24. Which hormone is released from the adrenal gland?
#25. True or false - A passive process is automatic and does not require energy?
#26. What is the heart rate measured in?
#27. Why does the rate of an enzyme controlled reaction plateau at a certain substrate concentration? ? plateau means level out
#28. What is the role of coronary arteries?
#29. What are substrates?
#30. Why do high breathing and heart rates remain after exercise?
Select all that apply:
#31. Which of these is the correct explanation for why photosynthesis is slower at lower temperatures?
#32. True or false - A concentration gradient is a term used to explain how the moon moves in the night sky?
#33. What is the process by which organisms remove waste from their bodies?
#34. What is the role of the inferior vena cava?
#35. Where does blood from the aorta travel to?
#36. Which structures in the lungs increase the surface area and therefore the speed and amount of gas exchanged?
#37. The female gametes (egg cells) are adapted to their function. Which of the following are adaptations of egg cells?
Select all that apply:
#38. Where does blood entering the heart through the pulmonary veins come from?
#39. Which parts of the heart and blood vessels stop blood from flowing in the wrong direction?
#40. What are the monomers of carbohydrates?
#41. What is stroke volume?
#42. The male gametes (sperm cells) are adapted to their function. Which of the following are adaptations of sperm cells?
Select all that apply:
#43. Growth is increased during puberty. Why is this?
#44. Why is there a size limit to cells?
#45. Which description most accurately describes osmosis?
#46. Which of the following describes metabolic rate?
#47. What is the role of the nucleus?
#48. What is the role of DNA synthase?
#49. What is the function of platelets?
#50. Why is the rate of an enzyme controlled reaction highest at an optimum pH?
#51. What is the molecular formula for glucose?
#52. Is respiration an exothermic or an endothermic reaction?
#53. Why is the Surface area : Volume ratio so important when it comes to exchange of substances?
#54. Growth hormone stimulates cells in muscles and bones to divide. It also stimulates another system, which system is this?
#55. Which type of white blood cell engulfs (surrounds) foreign cells in order to digest them?
#56. In which part of the cell does anaerobic respiration take place?
#57. Cardiac output is measured as the volume of blood pushed through the aorta each minute. Which is the correct equation for cardiac output?
#58. What are the monomers of fats/lipids?
#59. What effects does adrenaline have on the heart?
Select all that apply:
#60. Which of the following is part of the central nervous system (CNS)?
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