Myanmar Matriculation Biology case studies
Myanmar Matriculation Biology · Put your knowledge to work in context.
The Myanmar Matriculation Biology examination is the Grade 12 biology paper sat at the end of upper secondary schooling in Myanmar. A pass is a school-leaving and university-entrance credential: it is used for admission to science, medical, agricultural, forestry and education programmes, and it signals that a student can handle cell biology, genetics, physiology and ecology at pre-university depth. The Myanmar Matriculation Biology case studies are 5 cases and about 3,392 words.
1Colchicine and the Onion Root Tip Mitotic Index
During a practical, a student germinates onion bulbs and collects root tips 1 mm long. After fixing in ethanol–acetic acid, hydrolysing in 1 M HCl and staining with acetocarmine, she squashes each tip and counts 400 cells from five random fields at ×400.
681 words, about 3 min2Amylase, pH and Copper Ions: Reading Inhibition Data
A student investigates salivary amylase by mixing 1 cm3 of diluted saliva with 5 cm3 of 1% starch solution and testing a drop with iodine every 30 s until no blue-black colour appears. At pH 7, the times are: 20°C, 8.0 min; 30°C, 4.0 min; 40°C, 2.0 min; 50°C, 3.0 min; 60°C, 10.0 min; 70°C, no colour loss within 15 min.
678 words, about 3 min3Beta-Thalassaemia Risk in a Consanguineous-Like Family History
At a township hospital in Mandalay, a couple seeks genetic counselling. The husband is healthy, but his younger brother died at age 6 from transfusion-dependent beta-thalassaemia.
716 words, about 4 min4Yellowing Rice After Waterlogging: Nutrient or Root Problem?
In a rice field in the Ayeyarwady Delta, three weeks after transplanting, a farmer notices that the older leaves turn uniformly pale yellow and then die from the tip downwards, while the youngest leaves remain greener. The field was flooded by heavy rain and has stood in 10 cm of water for eight days.
674 words, about 3 min5A Lake Fish Kill: Diel Oxygen, Algal Blooms and Nutrient Control
A shallow lake near a pig farm is used for fishing and washing. Over two years, farmers report that the water turns bright green in calm sunny weather and that fish die overnight.
643 words, about 3 min