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6. Methods of contraception include use of hormones and barrier methods - Edexcel - GCSE Biology - Question 6 - 2021 - Paper 1
Question 6
6. Methods of contraception include use of hormones and barrier methods. (i) Which form of contraception is a barrier method? A. oral contraception B. female condo... show full transcript
Worked Solution & Example Answer:6. Methods of contraception include use of hormones and barrier methods - Edexcel - GCSE Biology - Question 6 - 2021 - Paper 1
Step 1
Step 2
State why a barrier method of contraception may be used in addition to a hormonal method.
Answer
A barrier method can be used in addition to a hormonal method to provide extra protection against unintended pregnancy. This dual approach increases effectiveness and reduces the failure rate associated with each method when used alone.
Step 3
Step 4
Explain how high levels of oestrogen and progesterone in the combined contraceptive pill work together to prevent pregnancy.
Answer
High levels of oestrogen in the combined contraceptive pill inhibit ovulation by suppressing the release of luteinizing hormone (LH) from the pituitary gland. Progesterone thickens the cervical mucus, making it more difficult for sperm to enter the uterus. Additionally, progesterone helps to maintain the uterine lining, which prevents the implantation of a fertilized egg. Together, these hormones effectively prevent ovulation and create an inhospitable environment for sperm and a fertilized egg, thereby preventing pregnancy.