Digestion 3070

Mer som dette

Context Classes

Ved Luis Maldonado

9B Test Biology Hayden S

Ved Hayden Silbermann

Digestion

Ved Woon Kiat

Water as microbial habitat

Ved Yap Mei Kee

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