Regulation of digestion, diseases and Laboratory work 4
Answers are for parents and teachers.
1
Give an example of Pavlov’s experiment and a conditioned reflex.
A dog salivating on seeing food; a person’s mouth watering at the smell of food.
2
Write 5 rules to avoid intestinal infections.
Wash hands with soap; clean/boiled water; wash produce; cook meat well; keep food covered.
3
Write the signs of food poisoning and what should be done.
Stomach pain, vomiting, diarrhoea; tell adults, small sips of fluid, 103 or a doctor; do not induce vomiting.
4
Complete the laboratory results table and write a 2-sentence conclusion.
Starch was split only in the warm saliva tube; the enzyme does not work in cold or acid.
5
Why are alcohol and smoking harmful for teenagers? Write 3 reasons.
Developing organs (liver, stomach, brain) are harmed; dependence arises; health and study suffer.