<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:
Moth Orchid
Explanation:
The Moth Orchid is the most common type of orchid and bears the name because of its supposed resemblance to a moth in flight. Native to Southeast Asia, the Philippines, and northern Australia, the Moth Orchid isn't exactly hard to find, and it comes in nearly every colour of the rainbow.
CENTRAL NERVOUS SYSTEM INCLUDES THE BRAIN AND SPINAL CORD.
The answer to this is the nucleus
