PSEB SS Biology case studies
PSEB SS Biology · Put your knowledge to work in context.
The Punjab School Education Board (PSEB) Senior Secondary examination is the Class 12 board examination for students in Punjab, conducted by a body that "came into existence through a legislative enactment in November 1969 for the development and promotion of school education in the state of Punjab." Biology is one of the science subjects in the Senior Secondary programme. Candidates typically reach it after Class 11 study in an affiliated or associated school, and the subject is assessed through a written board theory paper and a practical examination with an external examiner, since the Board publishes both "Practical Instructions for Centre Controllers" and a "Letter for External Examiner for Practical paper." The Board publishes the syllabus, textbooks (e-Books), a question bank, the "Structure of Question Paper" and "Model Test Paper/Sample Of Question Papers," so candidates can see the paper design and the style of questions before the exam. The PSEB SS Biology case studies are 5 cases and about 3,799 words.
1A 3-year-old with sickle cell anaemia and a second pregnancy
A couple from a village near Bathinda bring their 3-year-old son to a district hospital. Over two years he has had three episodes of severe bone and abdominal pain, one needing admission for five days.
809 words, about 4 min2A pea-green lake, supersaturated surface and dying bottom-feeders
A 40-hectare shallow lake on the edge of a town receives secondary-treated sewage from a plant that removes solids and BOD but does no nutrient removal; a sugar mill also discharges upstream during the crushing season. In late June the water is pea-green and a Secchi disc disappears at 0.4 m.
750 words, about 4 min3Discordant HIV tests ten days after a needle-stick
A 26-year-old staff nurse sustains a hollow-bore needle-stick while recapping a cannula after taking blood from a patient known to be HIV-positive and not on antiretroviral therapy; the patient's last viral load was 100,000 copies/mL. She washes the site, reports within 30 minutes and starts post-exposure prophylaxis 4 hours after the injury.
757 words, about 4 min4Choosing an assisted reproduction route for blocked tubes and a low sperm count
A 34-year-old woman and her 38-year-old husband attend a fertility clinic after 6 years of trying to conceive. Her cycles are regular; day-3 FSH is 9 IU/L and AMH 1.1 ng/mL.
742 words, about 4 min5Yellow young leaves and black blossom ends in a lime-rich tomato field
A tomato grower on sandy loam irrigated with bicarbonate-rich tube-well water applies a 19:19:19 NPK fertiliser every week. Soil pH is 7.9 and organic carbon 0.3%.
741 words, about 4 min