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TLS Online TPP Program

#Question id: 1369

The following statements are made with reference to characteristics of glycosaminoglycans and proteoglycans, which are major constituents of extracellular matrix. Which one of them is incorrect?

#Unit 4. Cell Communication and Cell Signaling

  1. Glycosaminoglycans are long linear polymers of specific repeating disaccharides. Usually one sugar is either a uronic acid or d-galactose; the other sugar is N-acetylglucosamine or N-acetylgalactosamine.

  2. Proteoglycan core proteins are synthesized in the endoplasmic reticulum, and the GAG chains are assembled on and covalently attached to these cores in the Golgi complex.

  3. All GAG chains are elongated by the alternating addition of sugar monomers to form the disaccharide repeats characteristic of a particular GAG; the chains are often modified subsequently by the covalent linkage of small molecules such as sulfate.

  4. The ratio of polysaccharide to protein in all proteoglycans is much lower than that in most other glycoproteins.

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TLS Online TPP Program

#Question id: 4844

#Unit 8. Inheritance Biology

Failure in which of the following phenomenon would result in linkage?
TLS Online TPP Program

#Question id: 28842

#Unit 2. Cellular Organization

Microtubules can be stabilized by side-binding microtubule associated proteins (MAPs), many MAPs are positively charged and bind to microtubules through____
TLS Online TPP Program

#Question id: 4327

#Unit 3. Fundamental Processes

What would occur if the repressor of an inducible operon were mutated so it could not bind the operator?
TLS Online TPP Program

#Question id: 28996

#Unit 7. System Physiology – Animal

Fat and muscle cells contains insulin-responsive glucose transporter localized to small vesicles in the cytosol, fusion of vesicles with the plasma membrane in presence of glucose, these glucose transporters are____
TLS Online TPP Program

#Question id: 23251

#Unit 13. Methods in Biology

Which enzyme degrades the resulting component dNTPs and ATP if not incorporated in chain.