UAE TLS Biology Test case studies
UAE TLS Biology Test · Put your knowledge to work in context.
The UAE Teacher Licensure System (TLS) Biology credential is a subject-matter licence for teachers who want to teach biology in UAE schools. It is aimed at pre-service graduates of biology or biology-education programmes, experienced teachers moving into the Emirati system, and teachers certified abroad whose qualifications must be mapped to local expectations. The UAE TLS Biology Test case studies are 5 cases and about 3,245 words.
1The Rogue Potato Cylinder: Deciding What the Osmosis Data Mean
Five groups in a Grade 11 practical each cut six 4.0 cm potato cylinders from the same tuber and weighed them before soaking for 30 minutes in sucrose solutions of 0.0, 0.2, 0.4, 0.6 and 0.8 mol/dm3. Mean percentage mass changes were +6.2, +2.1, -3.4, -9.8 and -15.1.
638 words, about 3 min2Two Affected Sons, an Uncertain Variant, and a Family Wanting Numbers
A couple with no symptoms has four children: two sons with prolonged bleeding after minor injuries (factor VIII activity below 5%), an unaffected son and an unaffected daughter. The mother's brother has the same disorder; the father's clotting is normal and he has no family history.
669 words, about 3 min3The Player Who Drank Too Much Water in the Heat
During a two-hour tournament match at 38 °C a 70 kg player loses 2.4 kg. Over the match and the next six hours he drinks 3.5 L of plain water, eats nothing salty, and passes only 300 mL of urine.
648 words, about 3 min4The Number on the Poster: Defending a Mark–Recapture Estimate
Students estimate the number of fish in a 0.4 ha desert pool. On day 1 they net 60 fish, clip a small fin, and release them.
636 words, about 3 min5Nineteen Out of Twenty-Eight Think Plants Eat Soil
A Grade 10 class of 28 students, nine of them EAL learners, completes a six-item quiz on plant nutrition. On the key item, 19 students choose 'plants take in their food from the soil' and only 6 choose the correct option.
654 words, about 3 min