The following cell structures are located within cells that make proteins. Which description best explains the relationship among these cell structures and their functions? Nucleus
Ribosome
Endoplasmic reticulum

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

What are chlorofluorocarbons made of

Which symbols below represent the ions found in the glass of water ? a. oh- and h+ b. co2 and o2 c. o2 and h2 d. nh3- and h+