Which of the following is NOT a characteristic of organisms that make up the Domain Bacteria?
A. They lack membrane-bound organelles
B. They are multicellular
C. They lack a nucleus
D. They live in both aquatic and terrestrial habitats

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+