[Giving brain+follow+ty+likes!] *when the genetic code is transcribed from the DNA to mRNA..
Which nitrogenous base never appears in RNA and is replaced with uracil?*
A. Adenine
B. Thymine
C. Guanine
D. Cytosine

Thank you <3

Thymine is replaced by uracil

Option B, OH- accumulates on the inside of the membrane while H+ accumulates on the outside.

Explanation:

In electron chain reaction, the electrons move through a series of electron transporters thereby undergoing redox reactions. This leads to accumulation of hydrogen ion (H+) with in the matrix and hence development of concentration gradient that leads to diffusion of hydrogen ion out of the matrix and accumulation of OH- ion on the inner side of the matrix while passing through ATP synthase

Hence, option B is correct