Task: Cellulose Digestion
Human lack the enzyme necessary to digest cellulose. Hay and grasses are particularly abundant in cellulose, and both are indigestible by human (although humans can digest starch)…. Read More
Response 1: Cellulose digestion, which is essential for herbivorous animals to obtain energy from plant material, involves the breakdown of complex carbohydrates by specific enzymes, primarily cellulase produced by microorganisms in the gut, allowing animals to absorb glucose and other nutrients, yet differences in digestive systems, such as ruminant stomachs or hindgut fermentation, determine the efficiency and rate of cellulose utilization, highlighting the importance of symbiotic microbial populations for sustaining energy needs.
PTE Summarize Written Text Task Sample 7: Response 1
Response 2: The process of cellulose digestion enables certain animals to extract nutrients from plant fibers by using enzymes like cellulase, which are often secreted by gut microorganisms, and involves complex mechanisms such as fermentation in the rumen of cattle or hindgut fermentation in horses, allowing these animals to access glucose and other essential compounds, but variations in digestive anatomy and microbial composition affect the effectiveness of cellulose breakdown and overall energy absorption.
PTE Summarize Written Text Task Sample 7: Response 2
Response 3: Cellulose digestion is a crucial physiological process in herbivores, whereby complex carbohydrates in plant cell walls are broken down into simpler sugars through the action of cellulase enzymes produced by symbiotic microbes in the gastrointestinal tract, with ruminants relying on multi-chambered stomachs and hindgut fermenters using cecum or colon fermentation, demonstrating that efficient nutrient absorption depends not only on enzyme activity but also on the specialized digestive adaptations of each species.
PTE Summarize Written Text Task Sample 7: Response 3
