GCSE · Biology · AQA · Spec 8461

Gonorrhoea

Gonorrhoea used to be one of the easy ones. An antibiotic called penicillin treated it easily. Then many resistant strains appeared, and the easy answer stopped being easy.

Build the web

Follow the bacterium

Seven pieces of the gonorrhoea story are below. Draw an arrow from each piece to the piece it acts on: what causes what, what spreads it, and where each control does its job. Then compare your web with the real one.

  1. A bacterium
  2. Gonorrhoea infection in a person
  3. Symptoms: thick yellow or green discharge, pain on urinating
  4. Spread to another person by sexual contact (outcome)
  5. A condom (a barrier method of contraception)
  6. Treatment with antibiotics
  7. Many penicillin-resistant strains
Add a link

No links yet.

Two controls, side by side

Treatment with antibioticsvsA condom (barrier method)

Read the top row first. It's the difference people most often blur.

Focus

What it does

Treatment with antibiotics

Treats the infection

A condom (barrier method)

Puts a barrier in the way during sexual contact

The insight

One treats, the other blocks. If you remember one thing from this table, make it this.

Where it breaks the chain

Treatment with antibiotics

At the person who already has gonorrhoea

A condom (barrier method)

At the route: the sexual contact that spreads the bacterium

What kind of thing it is

Treatment with antibiotics

A medicine: an antibiotic

A condom (barrier method)

A barrier method of contraception

Touched by the penicillin story?

Treatment with antibiotics

Yes. Penicillin treated it easily until many resistant strains appeared

A condom (barrier method)

No. The resistance story is about a medicine, and a condom is a barrier, not a medicine

What do you really think?

Treating gonorrhoea

Someone has just found out they have gonorrhoea.

Which is closest to what you think about treating it?
How sure are you?

Say it precisely

Precise, or too vague?

Each phrase is trying to say something true about gonorrhoea. Does it say it precisely, or is it too vague to pin down?

Still to sort

Precise (0)

Names exactly which cause, route or control it means.

Where the line is: A precise phrase could only mean one thing in the gonorrhoea story.

Too vague (0)

True-ish, but it could mean several different things.

Where the line is: If you could swap in a different disease or a different control and the phrase still fits, it's too vague.

8 of 8 still to sort.

Your turn to write

Spread, and how to control it

Explain how gonorrhoea is spread and how its spread can be controlled. [3 marks]

0 words · your answer stays on this page and is not sent anywhere.

WHAT YOU'VE LEARNED

A quick recap of today's lesson.

One bacterium, one route between people, and two ways to break it — plus the antibiotic that stopped being the easy answer.

What you need to know

  • Gonorrhoea is a sexually transmitted disease (STD): it is spread by sexual contact.
  • Gonorrhoea is caused by a bacterium.
  • Its symptoms are a thick yellow or green discharge from the vagina or penis, and pain on urinating.
  • Its spread can be controlled by treatment with antibiotics, or by a barrier method of contraception such as a condom.
  • Gonorrhoea was easily treated with the antibiotic penicillin until many resistant strains appeared.

The big picture

Gonorrhoea is a sexually transmitted disease (STD) caused by a bacterium. Its symptoms are a thick yellow or green discharge from the vagina or penis, and pain on urinating. It is spread by sexual contact. Its spread can be controlled in two ways that act at different points: treatment with antibiotics deals with the infection in the person who has it, and a barrier method of contraception such as a condom puts a barrier in the way of the sexual contact that spreads it. Penicillin once treated gonorrhoea easily, until many resistant strains appeared.

Key points

1Cause: a bacterium, not a virus.
2Symptoms: a thick yellow or green discharge from the vagina or penis, and pain on urinating.
3Route: sexual contact. That is why it is called a sexually transmitted disease.
4Two controls, two different break points: antibiotics treat the infected person; a condom is a barrier on the route.
5The twist: penicillin treated it easily until many resistant strains appeared, so it is no longer the easy answer.

Worked example

Problem

A student's revision note says: 'Gonorrhoea is caused by sexual contact. Its spread is controlled by antibiotics, which put a barrier in the way.' Find the two mistakes and write a corrected note.

⚠ Watch out

Muddling up a symptom with the cause. The thick yellow or green discharge is something the infection produces; it isn't what causes gonorrhoea. The cause is a bacterium.

🧠

Memory hook

One bacterium, one route, two breaks. Treat the person, or put a barrier on the route. And remember: penicillin was the easy fix only until resistant strains appeared.

✓

Check yourself

Cover the page. Say what causes gonorrhoea, its two symptoms, how it spreads, and its two controls. Then add the penicillin twist in one sentence.

Flashcards

(9)
What kind of disease is gonorrhoea?
A sexually transmitted disease (STD).
What causes gonorrhoea?
A bacterium.
What are the two symptoms of gonorrhoea?
A thick yellow or green discharge from the vagina or penis, and pain on urinating.
How is gonorrhoea spread?
By sexual contact.
Name the two ways the spread of gonorrhoea can be controlled.
Treatment with antibiotics, and a barrier method of contraception such as a condom.
Which control acts on a person who already has gonorrhoea?
Treatment with antibiotics — it treats the infection.
Which control acts on the route gonorrhoea spreads by?
A barrier method such as a condom — it puts a barrier in the way during sexual contact.
Which antibiotic once treated gonorrhoea easily?
Penicillin.
Why is penicillin no longer the easy answer for gonorrhoea?
Many resistant strains have appeared.

Tap any card to flip it, or use Study as deck to go through them one at a time. In the full lesson these run as a spaced-repetition deck — you rate each card Hard, Good or Easy and the tricky ones keep coming back until they stick.

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How this lesson was checked. This AQA GCSE Biology (specification 8461)lesson was published through Lightbulb Learning's human-designed editorial process — the educational standards, accuracy rules and publication checks it must pass were authored and approved by Philip Halpin. It passed subject-specific assessment, automated educational checks and technical publication verification before going live (publication checks completed 29 September 2026). Published pages are monitored, human spot-checking is ongoing across the lesson library, and anything found wrong is corrected or withdrawn. How our lessons are made and checked. Spotted a mistake? Email hello@lightbulblearning.co and we'll review it.