How does denaturation affect the active site of an enzyme? #1 It alters the primary structure of the protein, shortening the sequence of amino acids so that substrate molecules cannot bind to it. #2 It alters the three-dimensional structure of the protein so that substrate molecules cannot bind to it. #3 It alters the quaternary structure of the protein by adding a new polypeptide chain to the active site so that substrate molecules cannot bind to it. #4 It alters the secondary structure of the protein, converting alpha helices into beta pleated sheets so that substrate molecules cannot bind to it.

a. seed plant structure. 1. the three main plant organs are roots, stems, and leaves. a fourth kind of tissue, meristematic tissue, is responsible for plant growth. meristematic tissue is the only plant tissue that produces new cells by mitosis. plants can lose water out of their leaves as they exchange gases with the air

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just finished the test, the answer is d, greg is the least cost-effective because he charges the most for the project

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.