IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Cells-Factors affecting human health
Topic :Cells– Weightage : 21 %
All Questions for Topic : Tissues,Organs,System,Structure and Function,Life processes,Factors affecting human health,Vaccination
Question:
Discuss whether the spread of a disease within a population has the same properties as transmission of a nerve impulse along a nerve fiber.
▶️Answer/Explanation
Ans: Infectious disease is similar in that disease is passed from an individual that has it to another that doesn’t and a nerve impulse is passed from a region of a nerve fibre undergoing a nerve impulse to another region that has not yet received it; different in that nerve impulses are carried linearly along a nerve fibre and not to multiple other fibres whereas disease transmission can be
to many different individuals.
Question
7 Stress can lead to health problems. The video below explores one health problem related to stress.(9 marks)
a.One of the effects of stress is a temporary increase in blood pressure. Outline how arteries are better able to withstand high pressure than veins.(2 marks)
▶️Answer/Explanation
Ans: Arteries can handle high pressure because they have thicker walls and more muscle compared to veins. This helps them withstand the force of blood flow and maintain stable blood pressure. Veins, on the other hand, have thinner walls and rely on valves to prevent blood from flowing backward.
Question
7b .Exercise can be prescribed to reduce hypertension. Besides reducing blood pressure, suggest two more advantages and two disadvantages to health from exercise.(4 marks)
Advantage 1
Advantage 2
Disadvantage 1
Disadvantage 2
▶️Answer/Explanation
Ans:
Advantage 1: Exercise can improve cardiovascular health, increasing heart strength and endurance.
Advantage 2: Regular exercise can boost mood and reduce symptoms of anxiety and depression.
Disadvantage 1: Overtraining or excessive exercise can lead to injuries, such as strains or stress fractures.
Disadvantage 2: Exercise is the potential for overexertion, which can lead to fatigue or burnout. It’s important to listen to your body and give yourself adequate rest and recovery time.