The structure and function of cellulose in plant cells
By: Tom Brend
Cellulose is an organic compound essential to plants. Cellulose is a non-branched polysaccharide, meaning the compound is a linear, chemically bound chain of sugar molecules, more exactly beta-glucose, and a constitutional form of glucose. The chemical sum formula is (C6 H10 O5 )n where...
How are amino acids built into proteins
By: John Traveler
Of all the chemical manifestations in the universe, amino acids are without question the most incredible stuff ever to have chemically evolved. But quite amazingly, amino acids are a totally natural occurrence and just about anywhere you find liquid water, you are almost sure to...
By: G E Barr
The Shield Lignin is a natural polymer which confers flexibility as well as strength to cellulose in the cell wall of the plant cell. Lignin resists attacks by many microorganisms. What is known as "fiber" is actually the amount of cellulose and lignin present in...
By: Sammy Stein
LIgnin is a substance found in vascular plants, usually within the cell walls and also between cells themselves. It is largely a supportive structure and is part of the secondary thickening of tall plants. It is a major constituent of 'woody' material. Most trees would...
The functions of lipids in human cells
By: Joshua Horn - 257112
Lipids are molecules found throughout the cell with a wide variety of unique functions. They are hydrophobi small molecules and serve a variety of functions, including signaling, cellular structure, and energy storage. Below is a list of various lipid functions throughout the cell. 1) Membrane...
Proteins: The building blocks of life
By: Joshua Horn - 257112
Proteins are a ubiquitous part of the cell and to many are considered the basic building block of life. While a number of other molecules are necessary for life, including nucleic acids, carbohydrates and lipids, the sheer number of proteins and their huge variety of...
The different functions of proteins in cells
By: Joshua Horn - 257112
Proteins are an essential building block of every cell and are ubiquitous throughout the cell. They are involved in almost every process in the cell, from forming structural components to catalyzing reactions to cell signalling and interactions. Proteins are made of amino acids, which each...
Structure and function of proteins
By: Tarek Musslimani
Proteins are a very important class of compounds for the proper functioning of the human body. They have structural as well as functional roles. Proteins are composed of chains of amino acids that are connected with each other through a chemical bond. Amino acids...
By: Erich Rosenberger M.D.
In the last few years, carbohydrates have become a major topic in the world of nutrition. Eat lots of them - don't eat any; the debate rages on like a gigantic sugary pendulum. But what exactly is a carbohydrate and what are the functions of...
Why homeopathic remedies are unscientific: The chemistry behind infinite dilutions and molecular memory
By: Magda DH
In the simplest sense, homoeopathic remedies are unscientific because there is no evidence from well designed, controlled clinical trials that homoeopathic remedies perform better than placebo. They cannot thus be regarded as evidence-based treatments. Moreover, homoeopathic remedies are unscientific because the supposedly chemical and physiological...

 

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