Mock test. 1 hour and 10 minutes. 60 marks available.
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GCSE OCR Combined Science A Papers 1 and 7
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#1. Name one hormone that is produced in the pancreas?
#2. Resting metabolic rate is measured under which of the following conditions?
Select all that apply:
#3. Which type of white blood cell engulfs (surrounds) foreign cells in order to digest them?
#4. What is the role of amylase?
#5. What is the name of the chemicals that we use to transmit messages through the blood to organs?
#6. Which of the following are factors that affect the rate of diffusion?
Select all that apply:
#7. The Nervous System is made up of two parts, the Central Nervous System (CNS) and what other part?
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#8. What is meant by an active process?
#9. What is the purpose of respiration?
#10. Name one hormone that is released from the ovaries?
#11. What is the role of coronary arteries?
#12. Place the measurement units in order from from biggest to smallest. micrometres, picometres, kilometres, metres, nanometres, millemetres ? Use British Spelling - Metres* NOT Meters
#13. Which part of the heart separates the two sides?
#14. What is an advantage of anaerobic respiration?
#15. Why is the Surface area : Volume ratio so important when it comes to exchange of substances?
#16. What effects does adrenaline have on the heart?
Select all that apply:
#17. What are cilia?
#18. What effect does adrenaline have on the liver?
#19. Is photosynthesis an endothermic or an exothermic reaction?
#20. What is the field of view of a microscope?
#21. When is adrenaline released?
#22. Through which process do nutrients enter root hair cells from the soil?
#23. 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.
#24. True or false – A concentration gradient is a term used to explain how the moon moves in the night sky?
#25. Which of these is the correct explanation for why photosynthesis is slower at lower temperatures?
#26. Which of the following descriptions best matches the hormonal system?
#27. What is the Lock and Key Model of enzyme action?
#28. Which of the following features are found in arteries?
#29. Which of the following are 3 of the adaptations of leaves for efficient photosynthesis?
Select all that apply:
#30. What is the difference between aerobic and anaerobic respiration?
#31. 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.
#32. Which sub-cellular structures can be found in plants?
Select all that apply:
#33. Palisade cells are found just below the epidermis of leaves. What is their role and how are they adapted to perform it?
#34. Capillaries are only one cell thick and have thousands of branches. What is the function of capillaries?
#35. What are the monomers of proteins?
#36. Which parts of the heart and blood vessels stop blood from flowing in the wrong direction?
#37. Why does the rate of an enzyme controlled reaction plateau at a certain substrate concentration? ? plateau means level out
#38. Why is catalysis by enzymes important for life processes?
#39. What is the role of the inferior vena cava?
#40. Glucose enters the body via the?
#41. Urea is produced when amino acids are broken down. Which organ processes urea?
#42. What is the role of protease?
#43. Which sub-cellular structures can be found in bacteria?
Select all that apply:
#44. What is the gap between neurones called?
#45. Which pathway is used when rapid automatic responses are needed by your body to external stimuli, like touching a hot object?
#46. Which of the following sub-cellular structures provides structure and support for the cell?
Select all that apply:
#47. Increases in thyroxine concentration in the blood cause a decrease in the amount of thyroxine released. What kind of feedback mechanism is this?
#48. Is active transport an active or a passive process?
#49. What is the Induced Fit Model of enzyme action?
#50. What travels along neurones to pass information through the nervous system?
#51. What is the heart rate measured in?
#52. Surfaces where diffusion takes place allowing substances to enter the body usually have which characteristics?
Select all that apply:
#53. Arteries carry blood around the body, do they carry blood away from or towards the heart?
Remember – Arteries Away