Digestion 3070

Honelako gehiago

Marine & Freshwater Ecosystem

by aina atikah

YOSHE-BIOLOGY-chemical breakdown of food

by yoshe watson

The Digestive System(Mrs Shum)

by Serena Shum

FCE CHAPTER 1

by johnny loh

Digestion

Why do we need food?

Food = Nutritional Molecules

1. Fuel
2. Building blocks (synthesis during tissue growth/cell turnover)

Feeding Mechanisms

DEPOSIT FEEDERS (detritivory)

CARNIVORES

HERBIVORES

SUSPENSION/ FILTER FEEDING

sessile aquatic animals, sponges, hydra

ENDOCYTOSIS

pgagocytosis or phenocytosis

amoeba

SURFACE ABSORPTION

taenia

Animals can either wait or forage for food

Problems: Undernourishment vs Overnourishment