O level Biology Revision notes, Summaries of Biology

Covers few topics Made by me as a student while revising

Typology: Summaries

2025/2026

Available from 06/26/2026

shaheer-bukhari
shaheer-bukhari 🇵🇰

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BIOLOGY
REVISION
-
NOTES
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BIOLOGY

REVISION

  • NOTES

Biology

Human Nutrition Human gas Exchange Transport in Humans Excretion Disease Immunity Coordination & Control

& R /

    • 71m REAS BILE
  • EMULSIFICATION FAT (^) DROPLETS PANCREATIC JUICE^ ->^ AMYLASE INTESTINAL (^) JUICE - PROTEASE AND LIPASE

ON

VITC

VITC , IRON , CALAUM E WATER TRANSPORT (^) IN (^) HUMANS 1 BLOOD (^) PLATLETS PLASMA WBC

  1. VESSELS RBC ARTERIES CAPPILARIES YEINS
  2. HEART
  • > MUSCULAR (^) ORGAN
  • > 4 CHAMBERS
  • > (^) HOLLO FROM (^) INSIDE
  • > (^) DIVIDED (^) BY SEPTUM
-CORONARY ARTERY

PULMONARY ARTERY LINGS (^) PULONA

I

M VENA (^) LAVA prevent > Hearty north backflow T yes & BODY At A ACID MORE (^) ENERGY LESS (^) ENERGY PRODUCED PRODUCED COMPLETE (^) INCOMPLETE BREAKDOWN BREAKDONN

GILLA

HAIR LIKE
REMOVE MUCUS

Mucus STICKY SUBSTANCE STICKS DUST & INHALE (^) EYHALE INTERCOASTAL BONES / MUSCLES Ne EXTERNAL WORK OPPOSITLEY

volume (^) volume

increase decrease