Answer:
l think that it's true.hope this helps
The p wave on an electrocardiogram (ecg) represents the depolarization of cells in the sinoatrial (SA) node.
<h3>What is sinoatrial node?</h3>
The sinoatrial node is close to the opening of the superior vena cava. This bundle of nerve tissue propagates electrical impulses and therefore governs sinus rhythm from minute to minute.
Electrocardiogram is a test, it is possible to detect the rhythm of the heart and the number of beats per minute.
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Answer:
Both are considered macromolecules. I'll explain below
Explanation:
Proteins are like a huge Lego construction. Each individual piece gets pieced together to make a larger "thing" - Death Star, House, etc. Each individual piece is a monomer, and the larger construction is the polymer. The monomers are Amino Acids and they get pieced together to form the polymer that is called a protein. The linkage that they use is an amide bond, and in biology it is usually called a peptide bond.
Carbohydrates can be singular monomers or polymer units. They are made of completely different compounds - usually aldehydes or ketones. And they link together through different chemical linkages (acetal or ketal linkages for polymers,hemiacetal or hemiketal linkages for monomers).
Both can be large, 3D strucutres - proteins are only functional as a large, 3D structure, while carbohydrates can be singular.