Understand living systems, one clear concept at a time. Explore biology and botany notes, practise with explained questions, and build your laboratory skills.
From the whole organism to the living cell.
A CLOSER LOOK AT LIFEUse clear methods, worked calculations and explained questions to connect biology notes with evidence.
Create Class 11 and 12 Punjab Board practice papers. Choose your subject and chapters, then review the questions and marks before printing or exporting.
Open FSc Class 11 & 12 all-subjects generator →Create Class 9 and 10 chapter tests with MCQs, short and long questions, adjustable marks and Word/PDF export.
Open Class 9 & 10 generator →Create Class 9 and 10 physics practice papers with MCQs, short questions and numericals. Edit and review questions before classroom use.
Open Physics Class 9 & 10 generator →Build editable Class 9 and 10 paper drafts for Mathematics, English, Urdu and other subjects. Add complete questions, check marks, then print or export to Word.
Open all-subjects builder →Create editable Class 9 and 10 chemistry practice papers. Check question selection and curriculum coverage before classroom use.
Open Chemistry Class 9 & 10 generator →Build editable Class 11 and 12 practice papers. Review the generated questions, marking guidance and curriculum coverage before use.
Open Class 11 & 12 generator →Find publisher-hosted Punjab Biology textbooks and official medical-entry-test documents. These links open external sources; PreachBio is an independent study website, not the textbook publisher or examination authority.
Use the PECTAA official e-book directory. Under Class-XI → Optional / Elective (Science), choose Biology 11 2025–26. Compare the edition with the book prescribed by your college.
Open official Class 11 book directory ↗
Source: PECTAA / Punjab textbook resources. PreachBio Class 11 collection: growing.Read Topic 1.1: Three-domain classification →
More topic lessons are currently updating.In the same official directory, go to Class-XII → Optional / Elective (Science). The listing includes Biology (27.08.2026) and an older 2020 edition. Select the version prescribed for your session rather than assuming both editions have the same chapters.
Open official Class 12 book directory ↗
Source: PECTAA / Punjab textbook resources. PreachBio Class 12 collection: growing.More topic lessons are currently updating.The linked national curriculum is titled MDCAT 2025. PMDC’s May 2026 notice states that this curriculum applies to MDCAT 2026. For Punjab test instructions and later announcements, also check UHS. Do not treat an older guide as a future-year syllabus.
Open official MDCAT curriculum PDF ↗
UHS official MDCAT notices ↗ · PMDC curriculum-applicability notice ↗
PreachBio MDCAT lessons and practice questions: currently updating.A board textbook and the MDCAT learning-outcome list serve different purposes. Use your prescribed textbook for college study; use the official MDCAT curriculum to check entry-test scope. Check official updates before planning an examination session.
Sources checked: 20 October 2026. Textbooks and official documents remain with their respective rights holders. Links provide access to the original source; PreachBio does not rehost the files or claim official endorsement. Publisher pages may require browser verification or change their file links.
Start with a worked lesson, then check your understanding with explained questions and a separate practice quiz.
Interpret Km and Vmax, inhibition models and experimental data.
Competitive and noncompetitive inhibition →Calculate Rf values and interpret chromatography results.
Chromatography calculations →Compare diversity indices using worked datasets and sampling limitations.
Simpson’s diversity index →Search a topic, process or practical technique.
Choose a subject. Start with the concepts.
Keep building from there.
Metabolism, biomolecules and the chemistry of plant life.
Explore notes Physiology02How plants grow, transport materials and respond to their environment.
Explore notes Life sciences03Cells, inheritance and the principles of genetic variation.
Explore notes Ecology04Populations, communities and plant responses to their habitats.
Explore notes Practical skills05Microscopy, specimen preparation and practical botany methods.
Explore notes Plant diversity06Explore vascular plants, their structure and classification.
Explore notesBrowse our course and practice collections, including subjects with a small number of lessons. These are growing collections; coverage varies by subject.
A guide to preparing, staining and mounting plant sections.
Explore the pathways behind an essential group of biomolecules.
More explanations, revision topics and practical resources.
class 12 notes
Original AI-generated editorial cover; use the labelled teaching diagrams below for re…
Biology Class 11 New Syllabus Notes
Original AI-generated editorial cover; use the labelled teaching diagrams below for re…
Biology Class 11 New Syllabus Notes
Original AI-generated editorial cover; use the labelled teaching diagrams below for re…
class 12 notes
Original AI-generated editorial cover; use the labelled teaching diagrams below for re…
