Germs, the immune system and hand-washing

Tests: 4 of 11 right · Exam: 0 of 4 right · Kind: ★ · Understood: 9 of 15 · Run: 2026-10-18, commit f3c23ea72

Lesson 30 of the medicine course of Mova's primary school, as Mova's small model took its tests: it had read this lesson and the ones before it and learned from their exercises. Each test shows the options in the order the student saw them, its choice, the right answer, the score of every option and why it chose. The lesson itself, sentence by sentence with trees and pragmatics: the lesson in the corpora.

Every question of this lesson and each of its options parsed by Mova, with trees and pragmatics: the lesson's questions in the corpora.

Test 1 · ★ · right ✓

Dropped my chips, picked em up in 2 secs, all good yeah?

1. Yes, chips are germ-proof — no support
2. Yes, it's the 5-second rule, you're well safe — no support
3. Only if you blow on them first — no support
4. No, bacteria can get on in under a second — ← Mova's choice · ✓ the right answer · score 6

Why: It took the question to ask which statement is true. It chose option 4 with score 6, the only option with support. Its support: lesson 30, line 13: «The 5-second rule is a myth: bacteria can move onto dropped food in under a second, depending on the food and the floor.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «bacteria» (+3); the same property (+3). · the question and its options parsed, with trees and pragmatics

Test 2 · ★ · wrong ✗

Dad says "mud's good for you". What's fair?

1. Mud cures colds — ← Mova's choice · no support
2. Outdoor play and microbes may help the immune system, then wash before eating — ✓ the right answer · no support
3. Eat a bit of mud daily — no support
4. Mud is always dangerous and should never be touched by children — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 3 · ★ · wrong ✗

What would happen if doctors stopped washing their hands between patients?

1. Nothing, germs don't live on clean-looking hands — ← Mova's choice · score 4
2. Patients would get better faster — score 4
3. Only the doctors themselves would get ill — score 4
4. Germs would spread from patient to patient — ✓ the right answer · score 0

Why: It took the question to ask what happens next. It chose option 1 with score 4, tied with another option at 4 (the first shown, or the one claiming less beyond what it knows, wins). Its support: lesson 25, line 8: «Doctors look in ears with an otoscope and in the throat with a light and a flat wooden stick, and saying «aah» helps them see.», reached through the option's own match among the sentences about the question's things. What matched: the same action «look» (+2); the same doer «doctors» (+2). The right option, 4, scored 0. · the question and its options parsed, with trees and pragmatics

Test 4 · ★ · wrong ✗

Ben coughs into his hand then opens the door. What's the problem?

1. Nothing, coughs don't carry any germs at all — no support
2. The door handle gets sticky, that's all — no support
3. Germs from his hand go onto the handle for others — ✓ the right answer · no support
4. Germs die on hands the moment they land there — ← Mova's choice · score 5

Why: It took the question to ask what it is done to. It chose option 4 with score 5, the only option with support. Its support: lesson 30, line 5: «Most germs reach your mouth on your own hands, which is why twenty seconds with soap, about two Happy Birthdays, is one of the most powerful medicines there is.», reached through the remembered sentence the question matched. What matched: the same place «own hands» (+4); the same doer «most germs» (+2). Against it: a different action (counts against) (-1). The right option, 3, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 5 · ★ · right ✓

"u got a lump in ur neck, that's cancer" — after a cold. Most likely?

1. A broken bone — no support
2. A bee sting — no support
3. A swollen lymph node fighting the cold — ← Mova's choice · ✓ the right answer · score 4
4. Definitely cancer, see a surgeon today — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 4, the only option with support. Its support: lesson 30, line 14: «Lymph nodes, often called glands, are part of the immune system and swell while fighting an infection, such as in the neck during a cold.», reached through the option's own match among the sentences about the question's things. What matched: the same action «fight» (+3); the same doer «lymph nodes» (+2). Against it: a different thing acted on (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 6 · ★ · wrong ✗

A cut gets red, hot, spreads, and you get a fever. What then?

1. Put mud on it — no support
2. Squeeze it hard to push the germs out — no support
3. Ignore it, red always means it is healing well — ← Mova's choice · score 2
4. See a doctor, the infection may be spreading — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 3 with score 2, the only option with support. Its support: lesson 4, line 4: «Deep or gaping cuts heal better when the edges are held together by stitches, medical glue or paper strips.», reached through the option's own match among the sentences about the question's things. What matched: the same action «heal» (+3). Against it: a different doer (counts against) (-1). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Test 7 · ★ · wrong ✗

Mum buys super antibacterial soap "to kill 99.9%". Is ordinary soap enough?

1. Yes, ordinary soap and good washing work well — ✓ the right answer · score 3
2. No, normal soap does nothing at all against germs — no support
3. Only antibacterial soap works properly — ← Mova's choice · score 5
4. Only very hot water works — no support

Why: It took the question to ask which statement is true. It chose option 3 with score 5, against 3 for the next best. Its support: lesson 30, line 11: «Ordinary soap works well, and antibacterial soap has not been shown to be better for everyday use.», reached through the option's own match among the sentences about the question's things. What matched: the same action «work» (+3); the same doer «ordinary soap» (+2). The right option, 1, scored 3. · the question and its options parsed, with trees and pragmatics

Test 8 · ★ · right ✓

Cartoon shows germs as huge green monsters on a sandwich. What's real?

1. Germs are far too small to see without a microscope — ← Mova's choice · ✓ the right answer · score 7
2. Germs are only ever green — no support
3. Sandwiches have no germs on them — score 5
4. Germs really are that big, they just hide — no support

Why: It took the question to ask which statement is true. It chose option 1 with score 7, against 5 for the next best. Its support: lesson 30, line 1: «Germs are tiny living things, bacteria, viruses and fungi, far too small to see without a microscope; most bacteria are harmless or even helpful, and only some…», reached through the option's own match among the sentences about the question's things. What matched: the same action «see» (+3); the same doer «germs» (+2); the same circumstance (+2). · the question and its options parsed, with trees and pragmatics

Test 9 · ★ · wrong ✗

Why do you wash between fingers and under nails, not just palms?

1. Palms have no skin for germs to sit on — ← Mova's choice · no support
2. It looks nicer — no support
3. Nails clean themselves — no support
4. Germs hide there too — ✓ the right answer · no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Test 10 · ★ · right ✓

In the 1800s a doctor says illness comes from bad smells. What showed he was wrong?

1. Smells were banned — no support
2. Experiments proved tiny germs cause infections — ← Mova's choice · ✓ the right answer · score 9
3. Nothing, he was right about the bad smells — no support
4. Perfume was found to cure most diseases — no support

Why: It took the question to ask who or what does it. It chose option 2 with score 9, the only option with support. Its support: lesson 30, line 4: «Two hundred years ago doctors thought illness came from bad air; then Semmelweis made doctors wash their hands and fewer mothers died, and Pasteur and Koch pro…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+4); the same action «cause» (+3); the same doer «germs» (+3). Against it: a different thing acted on (counts against) (-1). · the question and its options parsed, with trees and pragmatics

Test 11 · ★ · wrong ✗

Your gut has trillions of bacteria. Are you ill?

1. Yes, you need antibiotics to clear them out — ← Mova's choice · score 7
2. Yes, very ill, and you should be in bed — no support
3. Only if you can feel them — no support
4. No, most are helpful and help digestion — ✓ the right answer · no support

Why: It took the question to ask which statement is true. It chose option 1 with score 7, the only option with support. Its support: lesson 18, line 15: «After a missed dose you usually take it when you remember, unless it's nearly time for the next one, and you never take two to catch up.», reached through the option's own match among the sentences about the question's things. What matched: the same thing acted on «medicine» (+4); the same action «take» (+3). The right option, 4, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics

Exam question 1 · formal language · wrong ✗

Identify the principal function of white blood cells within the human body.

1. The formation of bone — ← Mova's choice · no support
2. The detection and destruction of pathogens — ✓ the right answer · no support
3. The transport of oxygen to the tissues of the body — no support
4. The digestion of food within the stomach — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 2 · formal language · wrong ✗

Select the response consistent with the established facts concerning the so-called five-second rule.

1. The rule is endorsed by food safety authorities — ← Mova's choice · no support
2. Bacteria cannot transfer to dry food — no support
3. Bacteria may be transferred to food in less than one second — ✓ the right answer · no support
4. Bacteria require a minimum of five seconds to transfer to food — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 3 · formal language · wrong ✗

Ascertain the scientists credited with demonstrating, in the nineteenth century, that micro-organisms cause infectious disease.

1. Edward Jenner and Joseph Priestley — ← Mova's choice · no support
2. Louis Pasteur and Robert Koch — ✓ the right answer · no support
3. Isaac Newton and Robert Hooke — no support
4. Alexander Fleming and Howard Florey — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

Exam question 4 · formal language · wrong ✗

Determine the duration of hand-washing with soap and water ordinarily recommended.

1. Approximately five minutes — ← Mova's choice · no support
2. Approximately two seconds — no support
3. Approximately twenty seconds — ✓ the right answer · no support
4. No minimum duration is recommended — no support

Why: No option found support in what it remembers, so it guessed: it took the first option shown. · the question and its options parsed, with trees and pragmatics

This page in Markdown → https://md.mova.elamur.ai/free/en/school-run/medicine/30-germs-the-immune-system-and-hand-washing/