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What is an infectious agent composed entirely of protein is called?
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Where are nail cells formed?
They are composed of a protein called keratin.
What are hair shafts composed of?
Hair shafts are comprised of three distinct layers. These three layers are concentric, and they are called the cortex, cuticle, and medulla.dead epidermal cells
Simple proteins are composed of only what?
Simple proteins are composed of only amino acids. These proteins are also called monomeric proteins because they consist of a single polypeptide chain. The sequence of amino acids determines the structure and function of the protein.
Which type of microrganisim is the smallest?
A prion is a small infectious particle that contains a misfolded protein. These contain no DNA or RNA. These cause Creutzfeldt-Jakob disease, Scrapie in sheep and Kuru. These are deadly and progressive nerve wasting diseases.A plant pathologist discovered an infectious RNA particle smaller than a virus that causes diseases in plants. He called it a viroid. Millions each year are lost by these viroids. These contain only RNA.These two are the smallest infectious particles. They are not called microorganisms because they are not alive any more than viruses are.
Are ribosomes called protein factors?
No. Ribosomes are called protein factories because they are the site of protein synthesis.
Does a virus have a protein coat?
Yes. All viruses are composed of a nucleic acid surrounded by a protein capsid. When the capsid is not present, the the infectious nucleic acid is called viroid. When the nucleic acid is not present, the infectious protein coating is called prion.
What protein are fingernails composed of?
Fingernails and hair (and claws, hooves and horns on animals) is composed of a protein called "Keratin".
What is the combination of a virus's gentic material and protein called?
A virus has either RNA or DNA as it's genetic material and a protein coat. Together they are called a virus. Without either they are not infectious. There are some misfolded proteins called virons that are infectious but they are not considered to be viruses.
What is an infectious protein?
Infectious protein, also known as a prion, is best known as the cause of mad cow disease (which is technically called bovine spongiform encephalopathy). Scrapie, a disease of sheep, and kuru, a disease that affects cannibals, are also caused by prions.
The operon segment composed of the gene that codes for a protein repressor is called the?
The operon segment composed of the gene that codes for a protein repressor is called the regulatory gene. This gene produces the repressor protein that can bind to the operator region of the operon, preventing transcription of the structural genes when the repressor is bound.
Where are nail cells formed?
They are composed of a protein called keratin.
Where is an arthropods skeleton?
Arthropod have exoskeleton. The exoskeleton is composed of a thin, outer protein layer, the epicuticle, and a thick, inner, chitin–protein layer.
What one of these is an infectious protein?
They are called Prion. This is the definition I fount at wordnetweb.princeton.edu/perl/webwn: "an infectious protein particle similar to a virus but lacking nucleic acid; thought to be the agent responsible for scrapie and other degenerative diseases of the nervous system".
Does egg whites have starch?
Very little starch. Mostly protein and water.
Myofibrils are composed primarily of two protein filaments called?
thick filaments and thin filaments
The skeleton of an embryo is composed almost entirely of a type of connective tissue called?
Um, I think it is...Cartilage?
Channels within the structure of the cell membrane are composed of....?
Simply stated: ProteinsChannels within the structure of the cell membrane are composed of proteins. A protein that forms an ion channel through a membrane is called a transmembrane protein.
