Digestion Definition and 23 Threads

In around 40% of people, ##C_4H_6O_2S_2## is enzymatically broken down into sulfur-containing compounds such as methanethiol, dimethyl sulfide, or dimethyl disulfide. Is it basically possible to belong to these 40% and later in life to the other 60%? How stable is "enzymatically" and what are...

A friend, whose knowledge of biology comes primarily from pseudoscientific works, considers occasional fasting beneficial -- on this I will not take a stand, because as far as I know, the jury is still out on this. However, his justifications are annoying, (To paraphrase a notorious quotation...

Hello I have read this article about why doesn't the stomach digest itself https://www.scientificamerican.com/article/why-dont-our-digestive-ac/ but also during the digestion along the small intestine, there are enzymes. How does the small intestine defend against these enzymes? ( I suppose...

Hi Friends! Our body makes glucose from food we eat in around 10 hours time .If we eat glucose we get instant energy. In young age and old age by eating same amount of food the young has more energy because he digests food almost whole and an old person gets less energy because he cannot digest...

Homework Statement The intial step in the digestion of milk in Humans is carried out by which of the following enzymes? A) lipase B) trypsin C) rennin (No, not renin) D) pepsin Homework Equations Casein is converted to Paracasein by rennin and then paracasein along with calcium is acted upon...

I have a few questions on energy from foods. Do we have any other macronutrients that contribute energy to the body other than carbohydrates, proteins and fats in our body? What is the role of Hydrochloric acid (HCL) in our stomach? Is the HCL involved in all three above macronutrient digestion?

I don't understand how grass can enter an animal like a cow, have nutrients extracted by the cow and then be excremented as fertilizer? My point is that if i got the same grass, soaked in water and added it to plants without removing any nutrients it would be a useless fertilizer. How come you...

Here I will talk about the digestive system of my Kepler Bb humanoids. Mouth The teeth are much stronger than bone(Strong enough that they can eat bones no problem). Other than that and all time tooth formation(so a loose adult tooth is no problem for them since another will grow in its...

Hello everybody, I am looking for a disgestion procedure of Pb-alloy, so that we can measure the elements with ICP-OES. Pb should be removed, that it doesn't contaminate the system. So far we used HCl for digestion, but the results weren't very good. Elements of interest are: Sn Sb Bi Cu Cd As...

The structure of the Paramecium is rather complicated. Its plasma membrane is specially equipped with thickenings, so the membrane can be strengthened. Then, this membrane is called the pellicle. A paramecium has one big nucleus and two smaller nuclei. The bigger nucleus is about nutrition, and...

Is digestion related to heating and aging related to allowing the precipitate to sit?

What actually happens when cells break down food and combines it with oxygen? Does the sugar release a particle or energy in the form of light? If a particle, what is happening? Does the release of energy transform two different particles (one is the sugar, the other being the one that receives...

Most textbooks say it begins in the mouth. In fact, THAT is a quote from a text. Does it? Define digestion, specifically. So where does it begin?

Hey guys Does anyone know how to calculate the biogas volume of an anaerobic digester depending on the type of biomass fed in. Are there any good sources on this specific question? Thanks

I have a problem whereby sludge of quantity 1000 kg/day is required to fill an anaerobic digester tank. The sludge enters at 20deg and is heated to 35deg. With refernece to this link http://books.google.co.uk/books?id=DwMWvTki7h8C&pg=PA197&dq=heat+required+to+heat+sludge+anaerobic+digestion"...

Hi, 1) Humans cannot digest cellulose. Plant cell walls are made of cellulose. How can we get any nutrition fro plants if we can't break it's outermost structure? 2) When we take medicine by mouth, what prevents it from being broken down in the acidic stomach, or the enzymes on the small...

Homework Statement I would like to have some of my homework problems checked. I looked in the book, and answered these the best I could. My answers are in bold. Thanks in advance for the help! Homework Equations N/A. The Attempt at a Solution 1. Which functional plant cells lack a...

For humans, is it best to do nothing while eating? So that the digestive system can function with full vigour without resources directed to other activities during eating? From experience doing other physical activity is definitely not good but what about doing mental activities while eating...

I'm looking for information about how different nutrients are digested, absorbed, and metabolized during each stage of digestion. So basically how food is digested, absorbed, metabolized and how it differs from nutrient to nutrient. This would mean the different pathway which the sugar...

I'm an artist, currently researching the four stomachs of a cow for my sculpture project. As part of my finished piece I wish to incorperate the seasons of the year. Four seasons and four stomachs would fit together nicely. If there happens to be some kind of real connection it would benifit...

Do fish---- Break wind, when looking at them in aquariums i have never seen bubbles coming from that end, so may be their digestive system works differently.

Okay so protein digestion happens a lot in the stomach...how come the stomach doesn't just digest itself??

Is there a difference between saturated and hydrogenated fats, or are hydrogenated fats simply unsaturated fats which have been saturated? How readily are saturated fats (and hydrogenated, if they're a different thing) digested/stored/used for energy? I've heard claims by supposed health...