The stability of atoms depends on whether or not their outer-most shell is filled with electrons. If the outer shell is filled, the atom is stable. Atoms with unfilled outer shells are unstable, and will usually form chemical bonds with other atoms to achieve stability.
Answer:
The main difference between microtubules and microfilaments is that microtubules are long, hollow cylinders, made up of tubulin protein units whereas microfilaments are double-stranded helical polymers, made up of actin proteins.
Answer:
The transport protein-hormone complexes of lipid soluble proteins can not cross the filtration membrane of glomerulus.
Explanation:
Steroid hormones are water-insoluble (hydrophobic) in nature. Since blood has watery medium, the plasma, the lipid-soluble hormones travel in blood through transport proteins. The transport protein-hormone complexes are too large to cross the filtration membrane of glomerulus. The impermeability of the filtration membrane of glomerulus for protein-hormone complexes increases the half-life of lipid-soluble proteins.
C. <span> prokaryotes convert nitrogen-containing molecules into forms that can't be used by other organisms.</span>
1) a series of circulation cells for the tropics, (2) a series for the polar regions and (3) a very dynamic series of cells in the midlatitudes
