B1A AQA Revision Exam

Practice exam questions for science B.

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  • Created by: Arjun
  • Created on: 14-06-11 13:11
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BIOLOGY SPECIMEN PAPER B1A
Time Allowed: 50 mins Maximum Marks: 67
Name: Form:
1. This question is about coordination.
a. Why are reflexes important? [1]
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b. Make a flow chart to show how reflex actions work (remember to name the
neurones!) [5]
c. What is a synapses? [1]
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d. For FSH, Oestrogen and LH, write down which gland it is produced in, and
what it's effect on the menstrual cycle is. [6]
FSH:
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OESTROGEN:
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LH:
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What is the name given to the release of an egg? [1]
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The lining of the uterus thickens from around day 5 until some days after
the release of an egg. Suggest two purposes for this thickened lining. [2]
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Harriet does not produce eggs at ovulation. Explain how FSH could
be the cause, and why it could help release an egg. [5]
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f. Describe the process of IVF. [5]
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2. This question is about diet.
a. Define `metabolic rate'. [2]
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What is the difference between HDLs and LDLs? [2]
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f. It is important to have the right balance of HDLs to LDLs. Which type of fat
best helps you achieve this? [1]
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3. This question is about drugs.
a. What are `withdrawal symptoms'? [1]
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b. Name two recreational, two legal, and two illegal drugs. [2]
RECREATIONAL:
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LEGAL:
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ILLEGAL:
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c. What two diseases result from binge drinking? [2]
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TAR:
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CARBON MONOXIDE:
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e. What is a carcinogen? [1]
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4. This question is about disease.
a. Name two types of pathogens. [2]
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b. What did Semmelweiss find out? [2]
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c. Name three ways white blood cells protect you from disease, and briefly
describe how. [6]
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d. What are antibiotics? [1]
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e. Why did MRSA become resistant in hospitals? [2]
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How does a vaccine work? [4]
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Comments

sajeda

do you havbe the answersssss?

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