HUMAN BIOLOGY HIGHER UNIT 2: Chapter 19, Need for a Transport System and Chapter 20, Transport Mechanisms past paper questions. SECTION A All questions in this section should be attempted. Answers should be underlined with a ruler. 2012 2010. 2010 [Turn over

HUMAN BIOLOGY HIGHER [Turn over SECTION A All questions in this section should be attempted. Answers should be underlined with a ruler. 2009. 2008 2008 2007 [Turn over

All questions in this section should be attempted. SECTION B All questions in this section should be attempted. All answers must be written clearly and legibly in ink. Marks 2012 [Turn over

All questions in this section should be attempted. SECTION B All questions in this section should be attempted. All answers must be written clearly and legibly in ink. 2011 [Turn over

All questions in this section should be attempted. HUMAN BIOLOGY HIGHER SECTION B All questions in this section should be attempted. All answers must be written clearly and legibly in ink. 2009 [Turn over

All questions in this section should be attempted. SECTION B All questions in this section should be attempted. All answers must be written clearly and legibly in ink. 2008 [Turn over

All questions in this section should be attempted. SECTION B All questions in this section should be attempted. All answers must be written clearly and legibly in ink. 2007 [Turn over

All questions in this section should be attempted. SECTION B All questions in this section should be attempted. All answers must be written clearly and legibly in ink. 2007 Con’t [Turn over

[END OF QUESTION PAPER] SECTION C BOTH questions should be attempted. The questions should be attempted on the blank pages which follow. Supplementary sheets, if required, may be obtained. Labelled diagrams may be used where appropriate. Marks 2012. Describe the exchange of substances between plasma and body cells. (10) AND 2010 Discuss the conducting system of the heart and how it is controlled. (10) [END OF QUESTION PAPER] [Turn over