Cell membrane fluidity is determined by many things, including the presence of or absence of saturated and or unsaturated fatty acid tails, and because of that the ability of the phospholipids in a cell membrane to tightly pack together or not. I believe though in terms of an additional substance it would have to be cholesterol. These specific lipid molecules are inserted in between the phospholipids preventing phospholipids from tightly packing together thus allowing the cell membrane to have greater fluidity and flexibility.
Different forms of a given gene are known as alleles
This is the correct answer.
The probability of two tossed coins will come down as heads is 1/4. Because you have to calculate the probability of 1/2, multiplied with the probability of the other one - 1/2
Because it contains hydrogen (H+) ions
In rem sleep the eyes moves rapidly and the body is paralysed and cannot move. all the senses are blocked as well.
The answer should be D :) please correct me if i’m wrong <3
