Walking is a type of cardiovascular exercise because it builds stamina in your body and also increases the efficiency of your heart and lungs.
Sinotrial node or the SA node
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The folded structure at that region of the primary sequence of a protein that contains proline will have an alpha helix at that location.
<h3>What are aromatic amino acids?</h3>
Aromatic amino acids are amino acids which have a cyclic ring structure side chain.
Examples of aromatic amino acids are histidine and proline.
The structure of proteins made from amino acids depends on the side chains of the amino acids sin the protein.
Proline in the primary sequence of an amino acid resulted in an alpha helix at that location.
Therefore, the folded structure at that region of the primary sequence of a protein that contains proline will have an alpha helix at that location.
Learn more about amino acids at: brainly.com/question/2526971
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"Reaction time" is the correct answer
