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Unit 1 - Oral Contraceptives
Oral contraceptives inhibit the hormone FSH.

Unit 1 - Oral Contraceptives

This GCSE Biology quiz looks at oral contraceptive pills, how they affect hormones to prevent pregnancy, and the benefits and risks of using them.

Explore the Topic →
(quiz starts below)

Fascinating Fact:

When taken correctly, combined pills are highly effective, but missing doses or vomiting can reduce their reliability.

In GCSE Biology, you learn that oral contraceptives contain hormones that prevent ovulation and make it harder for sperm to reach an egg. They must be taken regularly to remain effective.

Key Terms

  • Oral contraceptive: A tablet containing hormones that is taken by mouth to reduce the chance of pregnancy.
  • Hormone: A chemical messenger carried in the blood that changes the activity of target organs or tissues.
  • Ovulation: The release of a mature egg from an ovary, usually once in each menstrual cycle.

Frequently Asked Questions (Click to see answers)

How do oral contraceptive pills work in GCSE Biology?

Oral contraceptive pills usually contain oestrogen and progesterone. They stop ovulation, thicken cervical mucus to slow sperm, and thin the uterus lining so implantation is less likely.

What are the advantages and disadvantages of the pill?

The pill is convenient, highly effective and can help with painful or heavy periods. However, it may cause side effects, must be taken daily and does not protect against STIs.

Why is it important not to miss oral contraceptive pills?

Missing pills or vomiting shortly after taking them can lower hormone levels below the effective range. This increases the risk of ovulation and therefore the risk of pregnancy.

Try These Related Quizzes

1 .
In humans, what are the male and female gametes called?
Egg and zygote
Sperm and egg
Egg and spoon
Egg and clone
When the egg fuses with the sperm it is said to be fertilised
2 .
Why is the contraceptive implant more effective than the oral contraceptive?
Cannot overdose
Cannot forget to take it
Releases a much larger dose
Delivers hormone directly into blood
Many women choose to have the implant for the convenience, effectiveness and lack of side effects
3 .
Birth control pills with the fewest side effects contain which hormone?
Oestrogen
Progesterone
FSH
LH
It is produced naturally in the ovary
4 .
The mini pill only contains one hormone. Which one?
Oestrogen
Testosterone
Progesterone
Thyroxine
Progesterone is also found in the injection and implants. It is preferred by many women as there tend to be fewer side effects
5 .
What is a fertilised egg known as?
A clone
A zygote
An ovum
A sperm
A zygote is formed from the fusion of the male and female gametes
6 .
Combined oral contraceptives contain which hormone?
Adrenaline
LH
FSH
Oestrogen
This suppresses the production of FSH
7 .
Where does fertilisation normally take place?.
In the vagina
In the uterus
In the egg tube (fallopian tube)
In the ovary
The fertilised egg then becomes implanted in the thickened wall of the uterus
8 .
What do we call an unwanted effect of a drug?
A controlled effect
A therapeutic effect
A side effect
A new effect
Side effects can be trivial or serious
9 .
Oral contraceptives are used for preventing what?
Reproduction
Pregnancy
Headache
Periods
Oral contraceptives are one of the most effective ways of preventing pregnancy
10 .
Oral contraceptives inhibit which hormone?
FSH
LH
Oestrogen
Progesterone
This targets the ovary and carries the message that prepares an egg cell for release
You can find more about this topic by visiting BBC Bitesize - Coordination and control

Author:  Donna Davidson (GCSE Biology Teacher & Examiner, Quiz Writer)
Biology Play this quiz again

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