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?
Following this he came to two conclusions, which became known as âChargaffâs rulesâ: 1  In DNA, regardless of which organism it comes from, the amount of adenine (A) is usually the same as the amount of thymine (T), and the amount of guanine (G) is usually the same as the amount of cytosine (C). The composition of DNA varies between different species such that the amount of each base is different.