Catherine has taught various college biology courses for 5 years at both 2-year and 4-year institutions. She has a Ph.D. in cell and molecular biology. Have you ever wondered what the doctor is measuring when he does a lipid screen? Or why a lipid screen is even necessary to begin wit...
What macromolecule is produced during translation? Which one of the monomers below would most readily polymerize, using an anionic mechanism? What are the differences between polymers and monomers? What has nucleic acids? Is gelatin a protein, carbohydrate, lipid, or nucleic acid?
The plasma membrane is the outermost layer of the living cell, and it is the living part of the cell that isolates the cell from the surrounding environment. It is a lipid bilayer with inner hydrophobic tail and an outer hydrophilic head of the lipid ...
long-chain fatty acids, and hydrosymyristic acid. Core oligosaccharide is composed of two sugars; keto-deoxy octanoic acid and a heptose sugar bounded together by Lipid A. O-polysaccharide are composed
Biochemists find uses for biomolecules. For example, a biochemist may use a certain lipid as a food additive. Alternatively, a biochemist might find a substitute for a usual biomolecule. For example, biochemists help to develop artificial sweeteners. ...
What is the current definition of an exosome? That is a very good question. Since the original description of exosomes over 30 years ago, the term has been loosely used for various forms of extracellular vesicle, muddying the field and contributing to the scepticism with which the research has...
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Amphipathic molecules serve several important biological roles. They are the primary component of the lipid bilayers that form membranes. Sometimes there is a need to alter or disrupt a membrane. Here, the cell uses amphipathic compounds called pepducins that push their hydrophobic region into membra...
(countable) A lipid that is solid at room temperature, which fat tissue contains and which is also found in the blood circulation; sometimes, a refined substance chemically resembling such naturally occurring lipids. Dietary fat is not the evil that it was once misapprehended to be; carbs are...
It is found between the extracellular fluid and intracellular fluid. It contains many proteins, little carbohydrates, and no water. It is a semipermeable membrane that is made up of a lipid bilayer. Specifically, there are 55% proteins, 25% phospholipids, 13% cholesterol, 4% other lipids that...