IB MYP Biology Circulation , Transpiration and Translocation Exam Style Questions
IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Metabolism-Circulation,Transportation and Translocation
Topic :Metabolism– Weightage : 21 %
All Questions for Topic : Nutrition,Digestion,Biochemistry and enzymes,Movement and transport,Diffusion,Osmosis,Gas exchange,Circulation,Transpiration and Translocation,Homeostasis
Question (3 marks)-IB MYP Biology Circulation , Transpiration and Translocation Exam Style Questions
The surgical and medical interventions shown below can be used to reduce the effects of atherosclerosis.
Surgical intervention – angioplasty
In an angioplasty, a tube called a stent is placed into an artery to keep it open.
Medical intervention – statins
Enzymes catalyse the conversion of substance A into cholesterol in the liver. Statins block the action of these enzymes. Statins are a form of medication that are commonly taken in tablet form.
Describe how angioplasty and a stent lead to a reduction in blood pressure
▶️Answer/Explanation
Ans:
inflating the balloon increases the diameter of the artery or squashes the plaque or keeps
artery open
allowing more blood to flow or making it easier for the blood to flow
heart does not need to pump as hard (to supply the same volume of blood)
Question:
Formulate a hypothesis regarding which of these extra structures are needed in the cells below so they can perform their functions:
a) Cells forming the lining of the small intestine, where digested foods are absorbed.
▶️Answer/Explanation
Ans: Microvilli, vesicles, pseudopodia.
b) White blood cells that fight disease by moving into infected tissue and engulfing the organisms causing the infection.
▶️Answer/Explanation
Ans: Lysosomes, actin and myosin filaments, pseudopodia.
c) Neurons that transmit nerve impulses and send signals across synapses from one neuron to another.
▶️Answer/Explanation
Ans: Vesicles.
d) Cells that develop into hair or nail.
▶️Answer/Explanation
Ans: Keratin fibres, microtubules.