Answer:Adenine and guanine are purine bases found in both DNA and RNA. ... What is the nitrogenous base displayed in the computer model? ... Click the button below to examine the structure of a nucleotide triphosphate.
Explanation:
1. Rhythm generators (SA node)
2. Conductive cells (node cells)
3. Contractile cells (myocardial cells)
Ice is less dense
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