Movement of Substances across a Plasma Membrane
3.4.2 The Movement of Substances Across the Plasma Membrane in Everyday Life (Structured Question 1 & 2)
Ad1 Question 1:Diagram I and Diagram II show the movement of substances P and Q across the plasma membrane respectively. The movement of P needs energy but the movement of Q does not.(a) Name the processes involved in the movement of P and Q. (2 marks)(b)(i) Name one example of P and Q. (2 marks)(b)(ii) … Read more
3.4.1 The Movement of Substances Across the Plasma Membrane (Structured Question 1 & 2)
Ad1 Question 1:Diagram I and Diagram II show two different types of movement of substances across the plasma membrane. (a) In Diagram I. label the following structures: Phospholipid bilayer, with letter R Carrier protein, with letter S [2 marks] (b) State two characteristics of the phospholipid bilayer. [2 marks] (c) Name the process of the … Read more
3.2.3 Types of Solution – Hypertonic
What is Hypertonic Solution? Ad1 Hypertonic solution is the solution that has lower water potential than the other solution. Water Concentration and Solute Concentration of a Cell in a Hypertonic Solution Water concentration: Water concentration inside the cell is higher than outside the cell. Solute Concentration: Solute concentration inside the cell is lower than outside … Read more
3.2.2 Types of Solution – Isotonic
What is Isotonic Solution? Ad1 In isotonic solutions, both solutions have equal water potential. Water Concentration and Solute Concentration of a Cell in a Isotonic Solution Water concentration and solute concentration are equal in both solutions. Effect of Isotonic Solution on Animal Cell If an animal cell such as red blood cell is placed into … Read more
3.2.1 Types of Solution – Hypotonic
What is Hypotonic Solution? Ad1 Hypotonic solution is the solution that has higher water potential than the other solution. Water Concentration and Solute Concentration of a Cell in a Hypotonic Solution Water concentration: Water concentration inside the cell is lower than outside the cell. Solute Concentration: Solute concentration inside the cell is higher than outside … Read more