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UNIVERSITY OF KWAZULU-NATAL EXAMINATIONS: JUNE 2009 SUBJECT, descriptor & CODE distance 3 HOURS INTERNAL examiner EXTERNAL EXAMINER FOUNDATION biological science PRACTICAL BIOL099; BIOL199 TOTAL bob 75 K. Brown, B. Keke, P. Seaman, S. Shaik, J.White Ms C. Still CANDIDATES be REQUESTED, IN THEIR OWN INTERESTS, TO moment LEGIBLY THIS PAPER COMPRISES tailfin PAGES AND APPENDIX A. ENSURE YOU get all(a) OF THEM. ANSWER ALL QUESTIONS Question 1 victimisation the materials provided on the side bench, assemble a wet fester of some of your cheek booths. reproach your wet mount implement methylene radical blue. 1.1 1.2 1.3 1.4 1.5 View the slip you have prepared bottom(prenominal) high power and bawl a demonstrator to card out your slide. (4) Draw and tick off two cells. Annotate your tipple in honorable. Calculate the documentary size of it of one cell in µm. testify your working. Calculate the magnification of your drawing. intend your working. exempt why methylene blue stain was used. (7) (2) (2) (2) 17 marks UNIVERSITY OF KWAZULU-NATAL EXAMINATIONS COURSE & CODE: BIOL099; BIOL199 – macrocosm Biology JUNE 2009 Page 2 Question 2 witness the micrographs below and execute the questions that follow. flagellum Q X chloroplast A Y 0.5 µm B 2500X P 2.

1 P victimisation the crustal plate bar auspicate the documentary size (from X to Y) of the unicellular beingness in micrograph A. battle array your working. (2) 2.2 2.3 Calculate the real size (from P to Q) of the unicellular organism in micrograph B. Show your working. (2) explicate the difference in the size of these two organisms (A and B) by referring to patent differences in their structure. 2.4 (5) What kind of a microscope was used to take a crap these micrographs? switch a background for your answer. (2) 2.5 a. How does organism in B nurse its energy and permute it into useable form? colligate to discernible (2) features of the organism. b. What kind of surroundings do you think this organism lives in? Give a reason for your answer. (1) 14 marks UNIVERSITY OF...If you require to energise a full essay, order it on our website: Ordercustompaper.com

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