The answer is D.) all of the above
Answer:
La fecha de inicio del otoño varía según el clima, la tradición y la cultura, pero cuando es otoño en el hemisferio norte, es primavera en el hemisferio sur, y viceversa.
Explanation:
Protons(Atomic Number) - 20
Electrons(Normally the same as protons) - 20
Neutrons(Mass number-proton number) - 20
Answer:
the hormone receptor is a heterotetramer composed of two subunits with 95 kDa and two subunits with 135 kDa
Explanation:
In this case, the heterotetramer is composed of two heterodimers, each composed of two subunits that held together by disulfide bonds. These heterodimers bind together through hydrophobic interactions in order to form a tetramer. The Sodium Dodecyl Sulfate (SDS) is a denaturing detergent that dissociates both heterodimers by interfering with hydrophobic interactions that hold heterodimers together. It is for that reason that only a single band of 230 kDa is observed (135 kDa + 95 kDa = 230 kDa). Moreover, 2-Mercaptoethanol breaks disulfide bonds, thereby separating the two subunits in the heterodimer. In consequence, after the use of this chemical compound (2-Mercaptoethanol), two different bands with 135 kDa and 95 kDa can be observed.
Cells are the fundamental building blocks of the body.
