The compound in cells that works almost like a battery is

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

Which experiment would most likely contain experimental bias ?

Which geologic feature would most likely be represented by contour lines john far apart from one another? a cliff a hill a plain a valley