BIO 206 Term Test 1 with complete solutions

Which of the following is a tenet of the Cell Theory? 1) All organisms are composed of one or more cells. 2) The cell is the structural unit of life. 3) Cells can arise only by division from a preexisting cell. 4) Cells divide only by fission. 1,2,3 What characteristics distinguish prokaryotic and eukaryotic cells? 1) Eukaryotes have membrane-bound organelles; prokaryotes do not. 2) Prokaryotes have relatively little DNA; eukaryotes generally have much more. 3) Eukaryotic chromosomes are linear; prokaryotic chromosomes are circular. 1,2,3 Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:00 / 0:15 Full screen Brainpower Read More The genetic material of a prokaryotic cell is present in a _________, a poorly demarcated region of the cell that lacks a boundary membrane to separate it from the surrounding cytoplasm. nucleoid RNA always _____. a. codes for protein b. codes for more than 1 protein c. is processed d. b & c e. a & c f. all of the above g. none of the above G All proteins have a. a primary structure b. a secondary structure c. a tertiary structure d. a quaternary structure e. a & b f. a, b & c g. All of the above F Uncharged amino acids ____. a. can be polar b. cannot be nonpolar c. cannot be hydrophilic d. can be hydrophobic e. a & c f. c & d g. a & d G You isolate DNA from a particular organism and analyze it. The amount of adenine was 6 μmoles and the A+T/G+C ratio is 4.0. How much thymine would be found in the sample? a. 1.5 μmoles b. 3 μmoles c. 4 μmoles d. 6 μmoles e. 12 μmoles f. Cannot be determined from the information provided. g. None of the above choices (a - f) are correct. D