Step in Biology

03/09/2025

https://youtu.be/hKj7tbF09Lc?si=4afj6gSw5DIbAD-l

RetrovirusesHIVCharacteristics of HIVRNA enveloped virusesReverse transcriptaseHIV, host specificTransferred from monkey to humanHuman ate monkey meat or bra...

03/09/2025

https://youtu.be/j2O9JaM6DN4?si=TtSJuemvAIxiCy5C

Bacteria and VirusesBacteriophageShapes of bacteriophageStructural components of bacteriophageHead of bacteriophageTail of bacteriophageHead is hexagonal, py...

01/09/2025

https://youtu.be/69xyAGrBnc0?si=zvb9iu_2qv-uxDj7

History of discovery of virusesVirus to venom or poison or slimeCharles ChamberlandPorcelain filter paperRabiesFilterable agentsIvanoskiTMVTobacco mosaic dis...

15/08/2025

https://youtube.com/watch?v=Q7AhmEm7jag&si=9wRm1og56T_0ld0_

Bacteria and VirusesGram positive and gram negative bacteriaSir Hans Christian GramGram staining techniqueCrystal violet-Gentian blueUse of CV and iodine to ...

13/07/2024

Lungs/its anatomy and morphologyLobes in lungsChest cavityPleural membraneIntercostal muscles and diaphragmDiaphragm and its role in respirationInhalation an...

02/07/2024

Step in Biology

Structure of BacteriaPiliCell MembraneNucleoidRibosomeCytoplasmic matrixImportance of bacteriaEcological importanceMedical importance of bacteriaEconomical i...

22/06/2024

in Biology

EnzymesIntroduction of enzymesHistory of enzymesCharacteristics of enzymesCofactor and its typesProsthetic group, coenzyme, activatorApoenzyme and Holoenzyme...

16/06/2024

Biology

Cell BiologyPlasma membranestructural models of plasma membraneFluid mosaic modelUnit membrane modelFunctions of plasma membraneSelectively permeable membran...

14/06/2024

https://youtu.be/TJ_KWB7ary8?si=oF8w3uO1GxdApgM4

This is a video lecture that explains the following topic of Cell Biology - 1 in accordance with the syllabus of MDCAT - Pakistan:- Similarities and Differen...

01/04/2023

As salamo alakum and welcome all.
Purpose of this page is to discuss:
1. Biological topics.
2. Biological entrance test objective for different universities and colleges.
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