REVISED BIOD 171 FINAL EXAM QUESTIONS

REVISED BIOD 171 FINAL EXAM QUESTIONS True/False. A virus is considered a microorganism. - RIGHT ANSWER -False True or False: The smallest biological unit of life is the molecule. - RIGHT ANSWER -False At a generalized level, all cells are comprised of what? - RIGHT ANSWER -Macromolecules A student may also answer: Proteins, Lipids, Nucleic acids and Polysaccharides but they must answer with all four to be fully correct. Proteins are formed from various combinations of _______ of which there are ______ known forms. - RIGHT ANSWER -1. Amino acids 2. 20 How many amino acids are classified as being essential amino acids? - RIGHT ANSWER -9 The plasma membrane (select all that are true): A. Restricts movement of materials in and out of the cell B. Is often a triple layer comprised of lipids C. Prevents essential nutrients from escaping D. Contains hydrophobic tails pointing outward - RIGHT ANSWER -A;C Complete the following DNA strand, and indicate how many bonds are formed for each complementary pair: 3' GGTCATCG 5' 5' CC _____AGC 3' - RIGHT ANSWER -3' GGTCATCG 5' 5' CCAGTAGC 3' There are 2 bonds formed between A and T, and 3 bonds between G and C. True of False: The genetic material within a prokaryotic cell is contained within a membrane-enclosed region. - RIGHT ANSWER -False How many carbon atoms are present in the monosaccharide glucose? - RIGHT ANSWER -6 Describe the 4 basic bacterial morphologies. - RIGHT ANSWER -Coccus (round/spherical), bacillus (rod), vibrio (curved rod) or spirillum (spiral/corkscrew). True or False: Archaea, a eukaryotic class of microorganisms, is capable of surviving harsh environments. - RIGHT ANSWER -False Which of the following microorganisms are considered to be Eukarya? Select all that apply. Animalia Plantae Fungi Protista - RIGHT ANSWER -All of them Microorganisms classified as _________ obtain most of their energy by converting light energy into chemical energy. - RIGHT ANSWER -Plantae