Practice Exam 1

Practice Exam 1 - Biology 101 Practice Exam Dr. Porter 1....

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Practice Exam Dr. Porter 1. Which of the following is an incorrect pairing? a.Cell – the structural and functional unit of life b.Population – a group of two or more tissues c. System – two or more organs functioning together d.Community – two or more populations e..All of these are correctly paired. 2. Which of the following best lists the steps in scientific method? a. Experiment, observation, hypothesis, conclusion b. Guess, experiment, conclusion, hypothesis c. Observation, hypothesis, experiment, conclusion d. Observation, conclusion, experiment, hypothesis 3. Which of the following is a purine? a. Alanine b. Guanine c. Cytosine d. Pyrimidine e. Ribose 4. Which of the following are characteristics of living things? a. They reproduce. b.They acquire energy. c.They are complex and organized. d.They respond to their environment. e.All of the above. 5. _________is the scientific study of life and knowledge in this field is acquired by using ___________. a. Science/the scientific method b. Biology/ scientific theories c. Chemistry/ scientific theories d. Biology/the scientific method e. Chemistry/microscope 6. Which of the following molecules was formed by a dehydration synthesis reaction? a. cholesterol b. amino acid c. sucrose d. hydrogenated fatty acid 7. Which of the following molecule has both a hydrophobic region and a hydrophilic region? a. Water b. triglyceride c. phospholipids d. cellulose e. chitin 8. The ___________structure results when the R group of amino acids interact to form bonds within the polypeptide chain. a. Primary b. secondary c. tertiary d. quaternary e. peptide 9. Hemoglobin is a globular protein composed of two alpha chains and two beta chains. To carry out its function of transporting oxygen, the molecule must be at the __________structural level. a. Primary b. secondary c. tertiary d. quaternary e. peptide 10. Which of the following is a nucleotide of RNA? a. Ribose, phosphate group, cytosine b.Uracil, ribose, phospholipids c.Deoxyribose, phosphate group, guanine d.Pentose sugar, phosphate group, thymine 11. When an atom becomes an ion: a. It shares a hydrogen atom with another atom b.It emits energy as it loses extra neutrons c.It gives up or takes up one or more electrons d.It shares a pair of electrons with another atom. e.All of the above 12. Which of the following is characteristic of an acid? a.It donates hydroxide ions. b.It contains a carboxylic acid group. c.It donates hydrogen ions. d.It will donate or accept hydrogen ions depending on pH. e.All of these. 13. Which of the following is not a function of polysaccharides in organisms? a. Energy storage in plants b. Energy storage in animals. c. Structural support d. Component of cell wall e. Component of nucleic acid 14. The continuity of life depends on the inheritance of biological information in the form of a. RNA b. ATP c. amino acids d. DNA e. protein 15. To regulate homeostasis an organism generally uses a. The scientific method b. positive feedback
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Practice Exam 1 - Biology 101 Practice Exam Dr. Porter 1....

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