In the peripheral nervous system, ACh is the neurotransmitter at the neuromuscular junction between the motor nerve and skeletal muscle. Figure 11.3. Distribution of cholinergic cell groups and projections in the rat brain.n the peripheral nervous system, ACh is the neurotransmitter at the neuromuscular junction between the motor nerve and skeletal muscle. Figure 11.3. Distribution of cholinergic cell groups and projections in the rat brain.
Answered by The Community. Making the world better, one answer at a time. If the DNA macromolecule contains 20% G (guanine), then by Watson-Crick complementarity it must contain 20% C (cytosine). Together this equals 40%, so the percent that is A (adenine) and T (thymine) together is 60%.By Watson-Crick complementarity, then, the percent A in the molecule is half of 60: 30%.0 %. Adenine pairs with thymine-therefore if 20% is A, another 20% percent will be T. Only two other bases are left, which form pairs: guanine and cytosine, in equal quant â¦ ities.
The DNA backbone contains deoxyribose sugar molecules (hence the D in DNA) and the RNA backbone contains ribose sugar molecules (hence the R in RNA). Three of the four nitrogen bases that can be attached to the RNA backbone are the same as those for DNA.Just like DNA, RNA nucleotides can have Guanine (G) and Cytosine (C) bases and just like in DNA nucleotides, Guanine is complementary (binds) to Cytosine (G-C).ut one thing that all human cells have in common-from brain to eye to muscle to skin cells is that they contain DNA, the  blueprint of life . And each cell, regardless of its form or function, contains a complete set of DNA.