Summary Life Science- The chemistry of life

BIOLOGY



LIFE AT THE
MOLECULAR, CELLULAR
AND TISSUE LEVEL
THE CHEMISTRY OF
LIFE
___

By EasyLearning




INTRODUCTION
Molecule: chemical structure made of atoms

Compound: chemical substance made of atoms from 2+ elements

Anabolic process: process where something is built up (using smaller molecules to create a
larger one)

Catabolic process: process where something is broken down (from larger molecules to smaller
ones)

, 2




ORGANIC COMPOUNDS
All made from Carbon, Hydrogen, and Oxygen (CHO)


Carbohydrates

Made from:

● Carbon
● Hydrogen
● Oxygen

Functions:

● Stores energy
● Provides energy
● Provides protection and structure




1. Monosaccharides
(1 sugar molecule)

Energy source.

Types and sources [Can be remembered as GGF (Gives Good Flavour)]:

● Glucose
○ Test: Benedict’s solution
■ Positive = brick red colour
■ Negative = blue colour
● Galactose
● Fructose