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Which of the following descriptions of proteins are true? i. proteins can have different sequences of amino acids. ii. proteins can have different shapes. iii. proteins can have different numbers of amino acids. a. only i and ii are true. b. only ii and iii are true. c. only i and iii are true. d. i and ii and iii are all true. e. none are true statements

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

The organelle pictured is found in cells of and is theorized to have once been an independent organism.