Portage Learning BIOD BIOD 171 All Exams

Exam 1. True or False: A virus is considered a microorganism. 2. What is the smallest biological unit of life? 3. At a generalized level, all cells are comprised of what? 2. Define an essential amino acid. Exam Page 3 Answer Key 1. What are the two major types of nucleic acids and their roles? Exam Page 4 Answer Key 1. Complete the following RNA strand and indicate how many bonds are formed for each complementary pair: 3’ GGUCAUCG 5’ 5’ CC AGC 3’ 3’ GGUCAUCG 5’ 5’ CCAGUAGC 3’ Answer Key 1. The plasma membrane (select all that are true): A. Only restricts movement of materials into the cell B. Is often a bilayer comprised of lipids C. Cannot prevent essential nutrients from escaping D. Contains hydrophobic tails pointing inward 2. Carbon, Hydrogen and Oxygen atoms come together to form what primary macromolecule? Give an example.