Biology For Igcse #1 Apr 2026

Classification organizes organisms into groups based on shared characteristics.

A two-part, international naming system (Genus capitalized, species lower case, in italics) that reduces language confusion.

Beyond physical features, modern classification uses DNA and genetic analysis to determine evolutionary relationships. 👑 1.3 The 5 Kingdoms of Living Organisms Biology for IGCSE #1

ovement, R espiration (releasing energy), S ensitivity (detecting stimuli), G rowth, R eproduction, E xcretion (removing metabolic waste), and N utrition. 🗂️ 1.2 Concept and Uses of Classification

Organisms are classified into five major kingdoms, ranging from complex multicellular organisms to single-celled bacteria: 👑 1

. This foundational unit outlines the essential life processes that define living things and explains how scientists organize them into groups. 🧬 1.1 The 7 Characteristics of Life

Characteristics of Living Organisms - IGCSE Biology Revision 🧬 1

To be considered alive, an organism must fulfill seven specific criteria, easily memorized using :