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.
What are the three parts of a DNA nucleotide, and how are they connected to each other? 2. If 15% of the nucleotides in a DNA molecule contain guanine, what percentage of the nucleotides contain each of the other three bases? Explain your reasoning. 3. Why is complementary base pairing important in DNA structure? 4. Critical Thinking How did X-ray diffraction photographs help Watson and Crick determine the structure of DNA? STRUCTURES AND FUNCTIONS Label each part of the figure in the spaces provided. The diagram below shows two nucleotide base pairs in a segment of a DNA molecule. 52 Section 10-2 Review Name Class Date C T a b c d