Staying healthy: germs, vaccines, sleep, food and exercise
Tests: 6 of 11 right · Exam: 2 of 4 right · Kind: plain · Understood: 9 of 15 · Run: 2026-10-18, commit f3c23ea72
Lesson 72 of the biology 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 · wrong ✗
«it's freezing and my hair's wet, Mum says I'll catch a cold» What is right?
- 1. You only catch a cold from a virus, often passed on by someone — ✓ the right answer · no support
- 2. No, colds only come from eating sweets — ← Mova's choice · score 9
- 3. Yes, cold wet hair turns into a real cold — no support
- 4. Yes, but only if it is below zero — no support
Why: It took the question to ask which statement is true. It chose option 2 with score 9, the only option with support. Its support: lesson 72, line 4: «Cartoons show germs as green monsters you can see, cold weather giving you a cold, and every pill curing everything; in real life colds come from viruses, anti…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «colds» (+5); the same action «come» (+4). The right option, 1, found no support in what it remembers. · the question and its options parsed, with trees and pragmatics
Test 2 · right ✓
«just give me antibiotics for this cold, it'll be gone tomorrow» What is right?
- 1. Yes, but only if you take double the dose — no support
- 2. Antibiotics do nothing to cold viruses, and needless use helps bacteria resist — ← Mova's choice · ✓ the right answer · score 12
- 3. No, antibiotics only work on broken bones — score 3
- 4. Yes, antibiotics kill every germ there is, including the viruses that cause colds — score 11
Why: It took the question to ask which statement is true. It chose option 2 with score 12, against 11 for the next best. Its support: lesson 72, line 8: «Colds are caused by viruses, most often rhinoviruses; antibiotics do nothing against viruses, and going out with wet hair does not give you a cold.», reached through the same lesson line as the sentence the question matched. What matched: the same doer «antibiotics» (+5); the same circumstance (+3); the same thing acted on «nothing» (+2); the same light verb (be, have, do, get, go) (+2). · the question and its options parsed, with trees and pragmatics
Test 3 · right ✓
In a cartoon, green germ monsters with faces jump off a door handle. What is true?
- 1. Real germs are far too small to see without a microscope — ← Mova's choice · ✓ the right answer · no support
- 2. Germs are always harmful and must all be killed — no support
- 3. Germs are green and about the size of an ant, so you can squash them — no support
- 4. Germs only live on door handles — 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 4 · wrong ✗
«why am I shivering?? my head's boiling» What is right?
- 1. Shivering means the fever has already gone and you are getting better now — ← Mova's choice · no support
- 2. The brain turned the thermostat up, and shivering makes heat to reach it — ✓ the right answer · no support
- 3. Shivering means the germs are winning for sure — no support
- 4. Your body is too cold and needs a cold bath — 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 5 · right ✓
«gonna pick my scab, it's well itchy» What is the best answer?
- 1. Pick it, the wound heals much faster with the scab off and air on it — no support
- 2. Leave it: picking can let germs in and leave a scar — ← Mova's choice · ✓ the right answer · score 1
- 3. Pick it, scabs are only dried dirt — score -1
- 4. Pick it and put soil on to dry it — no support
Why: It took the question to ask what it is done to. It chose option 2 with score 1, against -1 for the next best. Its support: lesson 72, line 9: «When you graze your knee, platelets plug the wound and threads of fibrin make a net that dries into a scab, a natural plaster under which new skin grows; picki…», reached through the same lesson line as the sentence the question matched. What matched: the same action «let in» (+4); it fills the role the question asks for (+1). Against it: a different doer (counts against) (-4). · the question and its options parsed, with trees and pragmatics
Test 6 · wrong ✗
What would happen if you only ate chips for months?
- 1. You would grow faster than other children — no support
- 2. You would miss vitamins, because no single food has everything — ✓ the right answer · score 2
- 3. You would never get ill again — no support
- 4. Nothing, chips have every vitamin and mineral that a growing child needs — ← Mova's choice · score 3
Why: It took the question to ask what happens next. It chose option 4 with score 3, against 2 for the next best. Its support: lesson 69, line 12: «Carrots have vitamin A, which the eye needs to see in dim light, but eating extra carrots does not give night vision; the story spread in the Second World War…», reached through the same lesson line as the sentence the question matched. What matched: the same action «need» (+2); the same thing acted on «vitamin» (+2). Against it: a different doer (counts against) (-1). The right option, 2, scored 2. · the question and its options parsed, with trees and pragmatics
Test 7 · right ✓
«had a fizzy drink and a sweet, too tired to brush, whatever» Why is brushing at bedtime especially important?
- 1. Bacteria feed on sugar all night and make acid that eats enamel — ← Mova's choice · ✓ the right answer · score 7
- 2. Toothpaste helps you fall asleep — no support
- 3. Saliva is stronger at night and protects teeth, so brushing matters less in the morning — score 6
- 4. Teeth grow at night and need cleaning — no support
Why: It took the question to ask why something happens (its cause). It chose option 1 with score 7, against 6 for the next best. Its support: lesson 72, line 12: «Bacteria in plaque eat sugar and make acid that dissolves enamel into cavities; brushing twice a day for two minutes with fluoride toothpaste helps, and brushi…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «bacteria» (+4); the same action «feed» (+2); the same circumstance (+1). · the question and its options parsed, with trees and pragmatics
Test 8 · right ✓
«it's cloudy, don't need sunscreen» What is right?
- 1. Clouds block every single ultraviolet ray completely, so you are safe — no support
- 2. Sunburn only happens when you feel hot — no support
- 3. Ultraviolet only reaches the beach at noon — no support
- 4. Most ultraviolet rays pass through thin clouds, so you can still burn — ← Mova's choice · ✓ the right answer · score 12
Why: It took the question to ask which statement is true. It chose option 4 with score 12, the only option with support. Its support: lesson 72, line 15: «Ultraviolet rays in sunlight damage skin cells and cause sunburn; sunscreen blocks much of it but must be put on again after swimming, and you can burn on a cl…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «most ultraviolet rays» (+5); the same action «pass» (+4); the same place «thin cloud» (+3). · the question and its options parsed, with trees and pragmatics
Test 9 · wrong ✗
«bloody hot match, I'm parched, how do I know I've drunk enough» What is a simple sign?
- 1. Not needing the toilet all day — ← Mova's choice · no support
- 2. Pale yellow wee — ✓ the right answer · no support
- 3. A headache and a dry mouth — no support
- 4. Dark brown, smelly wee — 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 · wrong ✗
«my mate says the jab gives you the actual disease» What is right?
- 1. No, a vaccine is just sugar water — ← Mova's choice · no support
- 2. A vaccine uses a harmless copy or piece of the germ, not the disease — ✓ the right answer · no support
- 3. Yes, but only for one week — no support
- 4. Yes, a vaccine is the full disease in a small dose, so you get ill a bit — 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 11 · right ✓
Why do you puff and go red after running round the playground?
- 1. The lungs are running out of water — no support
- 2. The body is overheating and is just about to stop working altogether — no support
- 3. The heart pumps faster and the lungs work harder to bring oxygen — ← Mova's choice · ✓ the right answer · score 6
- 4. Running squeezes all the blood into your face — no support
Why: It took the question to ask why something happens (its cause). It chose option 3 with score 6, the only option with support. Its support: lesson 65, line 8: «The pulse is the stretch of an artery each time the heart pumps; you can feel it on the wrist or neck, and it gets faster when you run, because working muscles…», reached through the same lesson line as the sentence the question matched. What matched: the same doer «heart» (+4); the same action «pump» (+2). · the question and its options parsed, with trees and pragmatics
Exam question 1 · formal language · right ✓
Identify the principal reason for which antibiotic medicines are ineffective against the common cold.
- 1. The common cold is caused by exposure to cold air rather than by any germ — score 2
- 2. The common cold is caused by bacteria too resistant for any medicine — score 2
- 3. The common cold is caused by viruses, whereas antibiotics act upon bacteria — ← Mova's choice · ✓ the right answer · score 4
- 4. Antibiotics are effective only at elevated temperatures — no support
Why: It took the question to ask which statement is true. It chose option 3 with score 4, against 2 for the next best. Its support: lesson 72, line 8: «Colds are caused by viruses, most often rhinoviruses; antibiotics do nothing against viruses, and going out with wet hair does not give you a cold.», reached through the option's own match among the sentences about the question's things. What matched: the same action «cause» (+2); the same doer «viruses» (+1); the same thing acted on «colds» (+1). · the question and its options parsed, with trees and pragmatics
Exam question 2 · formal language · right ✓
Which of the following statements most accurately characterises the mode of action of a vaccine?
- 1. It forms an impermeable coating over the surface of the blood — no support
- 2. It presents a harmless copy or portion of a germ, such that the immune system retains a memory of it — ← Mova's choice · ✓ the right answer · score 11
- 3. It induces the full disease in a brief and controlled form — no support
- 4. It eliminates all micro-organisms from the body for a period of ten years — no support
Why: It took the question to ask who or what does it. It chose option 2 with score 11, the only option with support. Its support: lesson 63, line 13: «A vaccine shows the body a harmless copy or piece of a germ, so the immune system learns to recognise it and can fight the real germ fast; Edward Jenner made t…», reached through the same lesson line as the sentence the question matched. What matched: it fills the role the question asks for (+5); the same doer «immune system» (+4); a different action (counts against) (+2). · the question and its options parsed, with trees and pragmatics
Exam question 3 · formal language · wrong ✗
Ascertain the normal temperature of the human body, expressed in degrees Celsius.
- 1. Approximately thirty — ← Mova's choice · no support
- 2. Approximately one hundred — no support
- 3. Approximately thirty-seven — ✓ the right answer · no support
- 4. Approximately forty-two — 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 ✗
Select the response consistent with the established facts concerning the observation made by Alexander Fleming in the year 1928.
- 1. The washing of hands had reduced deaths among mothers — ← Mova's choice · no support
- 2. A Penicillium mould had destroyed the bacteria around it upon a culture dish — ✓ the right answer · no support
- 3. Citrus fruit had prevented scurvy among sailors — no support
- 4. Cowpox had conferred protection against smallpox among those who milked cows — 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/biology/72-staying-healthy/