<span>The two main factors that determine nuclear stability are the neutron/proton ratio and the total number of nucleons in the nucleus</span>
Answer:
Option A (mediate...........polypeptides) would be the appropriate choice.
Explanation:
- That's only because the leucine zipper symbol consisting of such a leucine remnant anywhere certain 7th point and has an α helical attachment.
- Maybe the leucine including its zipper between one protein dimples again from α-helix as well as interdigit this same leucine including its iterator of some other antibody.
Some other possibilities in question are not connected to something like the situation in question So that is the correct approach.
Answer:
Intracellular mediator or the secondary messenger molecules
Explanation:
The hormones act on the target cell or a group of target cells by binding to the hormone receptors present in the membrane of the target cells.
The hormones which are composed of the lipids bins to the intracellular receptors but the amino acid-based hormones are not able to diffuse into the cell and thus binds to the membrane-bound receptors.
This involves the signal transduction by the production of the secondary messenger molecules. The messenger molecules act as intracellular mediators like the cyclic AMP, cyclic GMP and the cyclic CMP.
Thus, the secondary messenger is the correct answer.
<span>For an organism having an eight-cell embryo, the cells of the upper tier were aligned over the cells of the lower tier at a very slight angle. Given these conditions, it can be concluded that the organism is likely to be a sea cucumber. The growth of the sea cucumbers starts with the development of the larvae. </span>