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A cell frequently wants to secrete larger molecules than can be accommodated through the transport systems dealt with in Topic E3. Exocytoses get to the movement of proteins out of the cell across the plasma membrane into the extracellular space. The Proteins intended to be secreted from the cell are interpreted on ribosome's attached to the RER. Membrane-bound vesicles having these proteins then bud off from the RER, migrate by the cytosol and fuse with the membrane of the Golgi apparatus that is given in the figure. On transport by the endoplasmic Golgi and reticulum apparatus, various post- translational modifications to the proteins take place, like as glycosylation.
figure: Exocytosis of proteins by the constitutive and regulated secretory pathways.
CHITIN It is polymer of N-acetyl-D-glucosamine. It is a structural homopolysaccharide found in the fungal walls as fungus cellulose and as chitin in the exoskeleton of
How do mineral salts participate in osmotic regulation? Osmotic pressure depends on the number of particles dissolved in a solution and not on the nature of such particles. Min
1. A roan bull which is heterozygous for the polled condition is mated to several cows of identical genotype to his. How many roan, polled animals should be produced out of 16?
The kind of epithelium which forms the inner walls of blood vessels is : 1. cuboidal epithelium 2. columnar epithelium 3. ciliated columnar epithelium 4. squamous epith
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In humans, the recessive allele that causes a form of red-green colour blindness (c) is found on the X chromosome. a) Determine the genotypes and phenotypes of the F1 generation fr
Zebrafish are raised in fish tanks with one family per tank. The mutation spadetail is a recessive lethal. A stock tank for spadetail was made by crossing two carriers. The fish in
what is entero coelom
Q. How is reproduction done in beings of the class Reptilia? These beings reproduce sexually through internal fecundation by means of copulation between female and male individ
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