The cell membrane is made of a protein layer that is sandwiched between 2 phospolipid layers. It has pores that allow selective passage of substances in and out of the cell.
Please fix your question, and this belongs in science, not biology. When the ball hits it's maximum height, it's kinetic energy will change to zero, and it will be converted to potential energy.
Answer:
480 nucleotides comprise this molecule of dna
Explanation:
According to Chargaff rule,
- Adenine is paired with thymine
- Cytosine is paired with guanine
Given in the question
Adenine residue = 120
Cytosine residue = 120
So, [A] = [T]
i.e. [A =120] = [T=120]
again, [C] = [G]
i.e. [C=120] = [G=120]
hence, total number of nucleotides present
=> [A] + [T] + [C] + [G]
=> 120 + 120 +120 +120
=> 480.
