Author: Joyce Buda


BIOL 103-7380 FINAL EXAMUniversity of Maryland University CollegeThe following general directions apply to this exam: This exam is worth a total of 100points. Multiple choice questions #1-45 are worth 1 point each. Multiple choice questions#46-50 are worth 2 points each. Choose 5 of 7 essay questions #51-57, which are worth 9points each. Please provide answers on the answer sheets provided at the end of the exam.I recommend that you print out the exam, answer the questions, then copy the answersonto the answer sheets. Please submit only the answer sheets into your assignment folderby 11:59 PM Eastern Standard Time Sunday 17 April.As in all assignments, I trust that your answers are your own work.GOOD LUCK!Thanks for taking the course, D Riege**********************************************************************MULTIPLE CHOICE QUESTIONS – 1 POINT EACH – 45 POINTS TOTAL: On theanswer sheet, indicate the letter that represents the best answer to each of the multiplechoice questions below.1. Which of the following includes all the others?A) atomB) cellC) organismD) population2. In science, a hypothesis must be A) testable B) derived from a theoryD) able to be proven absolutely trueC) a known fact3. A chlorine atom has 17 protons, 18 neutrons, and 17 electrons. The atomic number ofchlorine isA) 8 B) 17 C) 35D) 524. If you place the probe of a pH meter in lye or sodium hydroxide (NaOH), it will readpH 14. Sodium hydroxide is A) an acid B) neutralC) a base5. This polysaccharide forms fibers that are a major component of plant cell walls:A) glucose B) starch C) cellulose D) glycogen6. Which of these types of molecules contain nitrogen?A) polysaccharides B) proteins C) steroids7. Fats contain more energy per gram than carbohydrates or proteins becauseA) fat molecules contain a lower percentage of oxygen atomsB) fat molecules contain a lower percentage of hydrogen atomsC) fat molecules contain a lower percentage of carbon atomsD) fat molecules contain a higher percentage of adipose atoms8. Prokaryotic cells, with no nucleus or membranous organelles, are found inA) animals B) bacteria C) fungi D) plants9. The main function of a ribosome is to A) extract energy from glucoseB) synthesize glucoseC) store food in the form of fatD) synthesize proteins10. Mitochondria A) package proteins for secretion from cell B) contain chromosomesC) are sites of oxidation of glucose to generate ATP D) synthesize proteins11. The plasma membrane consists of A) a single layer of phospholipid moleculesB) a double layer of phospholipid molecules in which proteins are embeddedC) several layers of protein and carbohydrate moleculesD) a triple layer of phospholipids and carbohydrates12. The movement of molecules from a region of low concentration across a membraneto a region of high concentration by use of ATP energy is A) active transportB) diffusion C) passive transport D) osmosis13. The oxygen in our atmosphere is produced by A) greenhouse effectB) cellular respiration C) photosynthesis D) volcanic eruptions14. Yeast cells break down glucose anaerobically intoA) ethanol and CO2B) lactic acid and CO2C) lactic acid and H2OD) ethanol and H2O15. Carbon dioxide is released in A) the light-dependent phase of photosynthesisB) the Krebs cycleC) glycolysisD) the Calvin cycle16. If the concentration of glucose in the water outside of a cell is lower than theconcentration inside, A) water will tend to enter the cell by osmosisB) water willtend to leave the cell by osmosis C) glucose will tend to enter the cell by osmosisD) glucose will tend to leave the cell by osmosis17. What happens if a red blood cell is placed in a hypertonic solution?A) the cell will shrink B) the cell will swell and may burstC) the cell will remain the same size18. Which of the following is not a characteristic of enzymes? A) they are proteinsB) they speed up the rate of chemical reactions C) they act on specific substances calledsubstrates D) they are used up in each reaction, thus need to be produced in large quantities19. Which of these does not have to be present for photosynthesis to occur?A) water B) carbon dioxide C) glucoseD) chlorophyll20. Each new cell produced by this process will have an identical copy of allchromosomes and genes possessed by the parent cell: A) mitosis B) meiosis21. During the first division of meiosis, A) chromosomes separate at the centromereB) homologous chromosomes separateC) chromosomes become triploid22. If a normal parent and an albino parent have albino child, the genotypes of the parents areA) AA x Aa B) Aa x Aa C) Aa x aa D) aa x aa

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