Chapter 7 Cellular responses in defence + Chapter 8 Viruses HUMAN BIOLOGY HIGHER Chapter 7 Cellular responses in defence + Chapter 8 Viruses Past paper questions SECTION A All questions in this section should be attempted. Answers should be underlined with a ruler. 2007. 2007. 2012 (revised). 2008. [Turn over
HUMAN BIOLOGY Past paper questions HIGHER [Turn over SECTION A All questions in this section should be attempted. Answers should be underlined with a ruler. 2008. 2010. 2011. 2009. [Turn over
HUMAN BIOLOGY Past paper questions HIGHER [Turn over SECTION A All questions in this section should be attempted. Answers should be underlined with a ruler. 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. 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. [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. 2010 [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. [Turn over
Note that the question contains a choice. SECTION C This question should be attempted. Note that the question contains a choice. The question should be attempted on the blank pages which follow. Supplementary sheets, if required, may be obtained. Labelled diagrams may be used where appropriate. Marks 2002 Give an account of immunity under the following headings: B-lymphocytes and t-lymphocytes (7) Macrophages. (3) 10 [END OF QUESTION PAPER] [Turn over