nursing bio questions

1. What are the two major types of nucleic acids and their roles? DNA (deoxyribonucleic acid): Contains the genetic material as well as heredity characteristics found in living organisms. RNA (ribonucleic acid): its role is for decoding the sequence of heredity information found in DNA 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’ There are 2 bonds formed between A and U, and 3 bonds between G and C. 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 B and D 2. Carbon, Hydrogen and Oxygen atoms come together to form what primary macromolecule? Give an example. Polysaccharides. Glucose, sucrose and cellulose are all acceptable answers. Exam Page 4 Answer Key Exam Page 5 Answer Key Exam Page 6 Answer Key 1. True of False: Eukaryotic cells do not have a nucleus the cell. DNA contains a vast amount of hereditary information and is responsible for the inheritable characteristics of living organisms. RNA is responsible for deciphering the hereditary information in DNA and using it to synthesize proteins. 1. Which of the following microorganisms are considered to be Eukarya? Select all that apply. A. Animalia B. Plantae C. Fungi D. Protista A,B,C,D 2. True of False: All multicellular microorganisms classified as Animalia are heterotropic. True 3. Microorganisms classified as Plantae obtain most of their energy by converting energy into energy. Light (sunlight); chemical (sugars) Exam Page 7 Answer Key Exam Pag