Answer:
A. is correct. Ra - rv - L - la - lv - b
Explanation:
Firstly they are not membranes and they are villi's which increase the surface area during digestion
<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:
AUG CAG UUC UUG CGC GAA UAA GCA AU
Explanation:
tRNA pairs with mRNA to make a chain of amino acids that form a protein, through the process of translation. The anti-codons in the tRNA are complementary to the codons in the mRNA. Through the rules of complementary base pairing, A always pairs with T/U and G always pairs with C.
T/U is because in DNA, the base is thymine (T), but in RNA, the base is uracil (U).
Therefore, wherever you see a U in the mRNA sequence, the complementary tRNA is A. Whenever you see an A, the complementary tRNA is U. Whenever you see a G the complementary base is C, and whenever you see a C, the complementary base is G.
Answer:
Scientists should sent a robot and observe the light penetration in the ocean water.
Explanation:
Robots in modern day have become a source of experiments for scientists. Many scientists believe that sending a robot is a better way for research as they can have different observation at different time for a certain period before making a final remark. The robots should be sent in ocean water and observations should be recorded on graph. These observations should be made in different timings to make the research more realistic.
