11 SCIN Herbivores & Respiration

Description of foregut digestors

stomach is divided into several large chambers including a rumen, passage of food is slower which allows more time for chemical digestion of cellulose

Description of hindgut digestors

has no extra chambers, but has a very large caecum

Rumen

in foregut digestors houses the bacteria that produces the cellulase enzyme

Caecum

houses the bacteria that produces the cellulase enzyme, also where anaerobic bacteria ferment plant material

Differences between the stomachs of carnivores and herbivores

carnivores have larger stomachs than herbivores as they may need to eat a large meal while herbivores eat over a longer period of time

Difference in length of digestive tract between carnivores and herbivores

herbivores have a longer digestive tract than carnivores as plant matter takes longer to digest than meat

Difference in nutrition gained through digestion of foregut and hindgut digesters

Foregut digestors have a higher level of nutrition compared to hindgut digestors

Aerobic respiration

uses oxygen and releases lots of energy

Anaerobic respiration

does not use oxygen and releases a small amount of energy

Word equation of aerobic respiration

glucose + oxygen —» carbon dioxide + water + lots of energy

Word equation of anaerobic respiration

glucose —» lactic acid + small amount of energy

Lactic acid

collects in muscles and stops them from working

Respiration

the production of energy using glucose and oxygen for other life processes

Difference in location of aerobic and anaerobic respiration

aerobic respiration occurs in mitochondria whereas anaerobic respiration occurs in the cytoplas