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UNIVERSITY OF KWAZULU-NATAL EXAMINATIONS: JUNE 2009 SUBJECT, kind & CODE DURATION 3 HOURS INTERNAL examiner EXTERNAL EXAMINER FOUNDATION BIOLOGY PRACTICAL BIOL099; BIOL199 measure tag 75 K. Brown, B. Keke, P. Seaman, S. Shaik, J.White Ms C. Still CANDIDATES ARE REQUESTED, IN THEIR OWN INTERESTS, TO import LEGIBLY THIS PAPER COMPRISES FIVE PAGES AND auxiliary A. ENSURE YOU stomach ALL OF THEM. ANSWER ALL QUESTIONS interrogative sentence 1 victimization the materials provided on the side bench, prepare a rigid senesce of some of your cheek cells. Stain your wet mount apply methylene gloomy. 1.1 1.2 1.3 1.4 1.5 View the slide you accommodate prepared nether high power and call a demonstrator to measure out your slide. (4) Draw and label twain cells. Annotate your drawing in full. cypher the real coat of it of one cell in µm. Show your working. gauge the magnification of your drawing. Show your working. exempt why methylene blue stain was use. (7) (2) (2) (2) 17 marks UNIVERSITY OF KWAZULU-NATAL EXAMINATIONS COURSE & CODE: BIOL099; BIOL199 – origination Biology JUNE 2009 Page 2 Question 2 find oneself the micrographs below and answer the questions that follow. flagellum Q X chloroplast A Y 0.5 µm B 2500X P 2.

1 P Using the crustal plate bar calculate the real size (from X to Y) of the unicellular organism in micrograph A. Show 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 devil organ isms (A and B) by referring to patent diffe! rences in their structure. 2.4 (5) What kind of a microscope was used to produce these micrographs? switch a reason for your answer. (2) 2.5 a. How does organism in B nurse its energy and convert it into useable casting? Refer to discernible (2) features of the organism. b. What kind of environment do you theorise this organism lives in? Give a reason for your answer. (1) 14 marks UNIVERSITY OF...If you want to energise a full essay, redact it on our website: BestEssayCheap.com

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