7.7.2 Respiratory Structure and Breathing Mechanisms in Humans and Animals (Structured Question 1 & 2)

Question 1:Figure I represents a model of the human lungs in the respiratory mechanism.(a) Based on the model of the lungs in Figure I, what are the equivalent structures to the glass tube and the bell jar in the human respiratory system?Glass tube: __________Bell jar: ____________(2 marks)(b)(i) The thin rubber sheet represents the diaphragm in … Read more7.7.2 Respiratory Structure and Breathing Mechanisms in Humans and Animals (Structured Question 1 & 2)

7.7.1 The Respiratory Process in Energy Production (Structured Question 1 & 2)

Question 1:Diagram below shows a type of organelle found in muscle cells.A biochemical reaction occurs in the organelle.(a)(i) Name this organelle. [1 mark](ii) Explain why membrane W is in the form of numerous folded layers. [2 marks](b) The biochemical reaction that occurs in this organelle is summarized as follows:(i) Name gas R. [1 mark](ii) Name product … Read more7.7.1 The Respiratory Process in Energy Production (Structured Question 1 & 2)