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The diagram shows changes in the thickness of the uterus lining during one menstrual cycle and the level of one hormone involved - Edexcel - GCSE Biology - Question 3 - 2015 - Paper 1
Question 3
The diagram shows changes in the thickness of the uterus lining during one menstrual cycle and the level of one hormone involved. (i) Complete the sentence by putti... show full transcript
Worked Solution & Example Answer:The diagram shows changes in the thickness of the uterus lining during one menstrual cycle and the level of one hormone involved - Edexcel - GCSE Biology - Question 3 - 2015 - Paper 1
Step 1
Complete the sentence by putting a cross (X) in the box next to your answer. This hormone causes the uterus lining to thicken.
Answer
The hormone that causes the uterus lining to thicken is B oestrogen. Oestrogen is responsible for the proliferative phase of the menstrual cycle, promoting growth of the endometrial lining.
Step 2
Complete the sentence by putting a cross (X) in the box next to your answer. In this menstrual cycle ovulation is most likely to occur on
Answer
Ovulation is most likely to occur on C day 14. This is typically around the midpoint of the menstrual cycle when the surge in luteinizing hormone (LH) occurs.