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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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e. 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…

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e. 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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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,…

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g. How does a vaccine work? [4]
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END OF TEST




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sajeda

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do you havbe the answersssss?

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