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.
Describe your reasoning. As guanine and cytosine are complementary, another 15% of the nucleotides must have cytosine. The remaining 70% of the nucleotides (100%-30%) must have adenine and thymine in equal proportions (35% each), as they are complementary to each other.f 15% of the nucleotides in a DNA molecule contain guanine, what percentage of the nucleotides having each of the other three bases?
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.