Nutrition Edexcel IGCSE Biology (Modular): Unit 1

These flashcards encompass key vocabulary and concepts related to the process of photosynthesis, digestion, and nutrition for the Edexcel IGCSE Biology syllabus.

Photosynthesis

The process by which plants manufacture carbohydrates from raw materials using energy from light.

Chlorophyll

A green pigment found in chloroplasts that absorbs energy from sunlight for photosynthesis.

Autotrophs

Organisms that can make their own food, such as green plants.

Limiting Factor

A condition in the environment that is in short supply and restricts life processes, affecting the rate of photosynthesis.

Peristalsis

Wave-like contractions of muscles in the alimentary canal that help move food along.

Digestive Enzymes

Biological catalysts that speed up chemical reactions to break down large food molecules into smaller ones.

Carbohydrases

Enzymes that break down carbohydrates into simple sugars such as glucose.

Proteases

Enzymes that break down proteins into amino acids.

Lipases

Enzymes that break down lipids (fats) into glycerol and fatty acids.

Bile

An alkaline substance produced by the liver that emulsifies fats and neutralizes stomach acid.

Balanced Diet

A diet that consists of all the food groups in the correct proportions to maintain health.