<h2>b) option is correct </h2>
Explanation:
- Some bacterial toxins cause disease by altering the activity of G protein, cholera toxin is one of them
- Cholera toxin catalyse ADP ribosylation of Gs and blocks GTPase activity thus Gs GTP become permanently active
- Constitutive activation of Gs protein continuously induce adenylyl cyclase, cytosolic cAMP level rises that leads to activation of protein kinase A (pKA)
- Activated pKA catalyse phosphorylation of two transmembrane proteins of intestinal epithelial cells:
- CFTR cause excessive outflow of Cl- ion and Na+ H+ exchange cause efflux of Na+ ion, both enters in gut and form Na+ Cl-
- Na+Cl- leads to outflow of water from the gut, resulting in diarrhea and dehydration and this condition may cause death of organisms due to loss of water and ions
Answer:
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Answer:
Hydrogen peroxide works by producing free radicals that damage cellular macromolecules. Hydrogen peroxide has broad-spectrum activity, working against gram-positive and gram-negative bacteria (with slightly greater efficacy against gram-positive bacteria), fungi, viruses, and endospores.
Explanation:
Hope this helps.
Answer:
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Explanation:
The kind of lipid that forms when a glycerol combines with fatty acids through dehydration synthesis is the trigylceride. It is also known as a triacylglycerol. It is compound that is formed from a glycerol molecule and three molecules of fatty acid. It is synthesized by the reaction dehydration synthesis wherein water is the by-product of the process. The -OH from the functional group of glycerol are detached and the fatty acids would attach to it forming the triglyceride. A dehydration synthesis involves the combining of smaller molecules to be able to form a larger molecule and along with it water molecules are being released. It is also known as a condensation reaction.
