Try it son. Send us the pictures!!
the mitochondria
Cows do not digest cellulose cell walls because they, as an animal, are incapable of producing a special enzyme, called cellulase, to do the job. The cellulose-digesting bacteria in their rumen, however, are capable of producing such an enzyme and are thus responsible for digesting cellulose and helping the cow obtain essential nutrients from coarse plant material where she cannot.
Because they do not have the digestive enzyme to break down cellulose.
Humans are unable to get metabolic energy from cellulose because they lack the enzymes necessary to chemically break it down. Since the human body can't properly digest cellulose, it's passed in the feces.
We lack the enzyme cellulase... and we don't have bacteria in our stomachs that do like cows, only bacteria can digest cellulose.
Micro-organisms, such as bacteria, are able to digest cellulose. No mammals are able to digest cellulose. This is because cellulose contains a β(1,4) linkage that no mammalian enzyme can break. This is why herbivores must have symbiotic bacteria somewhere in their digestive system that help them break down cellulose.
Because cattle are ruminants and cellulose is broken down by the microbes found inside of the rumen and then digested further in the cecum. Humans do not have a multiple-chambered stomach nor a functional cecum, thus making digesting cellulose impossible. Cellulose only acts as a gut filler for humans, which is the main reason why plant matter passes through so quickly (in around 2 hours) in a human's digestive tract compared to meat, and compared to the time it takes plant matter to go through a cow's digestive tract.
salivary amylase (salivary glads) and pancreatic amylase (pancreas)
Humans lack the necessary enzyme to digest cellulose, so it acts as roughage in the intestines and helps with the digestion process
Amalyse
Animals such as cows, horses, sheep, goats, and termites have symbiotic bacteria in the intestinal tract that contain the enzymes that allow them to digest cellulose in the GI tract. No vertebrate (animals with an internal skeleton) can digest cellulose directly; all must use the enzyme to break down cellulose.
In symbiosis there is benefit to both host and symbiont.example in the intestine of termite tryconympha companula is present. It secretes the cellulose digesting enzyme beta-glucosidases which converts cellulose into glucose which is later shared by both.