Name _A_!,_,_g_W_e_R_K_£_Y_ Dr. Osborne Bio. 1000 Supplemental Instruction Program Lab Quiz 1 Base your answers to questions 1 through 5 on the information below and on your knowledge of biology. An investigation was performed to estimate the amount of absorption of different wavelengths (nanometers) of light by a photosynthetic organism. The following data were collected: 550 nanometers. 40% absorption; 450 nanometers, 85% absorption; 650 nanometers. 70% absorption; 500 nanometers, 60% absorption; 600 nanometers. 50% absorption. 1. Complete both columns of the Data Table so that the nanometer values are increasing. [1] DATA TABLE WAVELeN'Tij ,t{gs'ClRfrID N 450 "'''''' 85~. 5 aD _" "'" c,o ~ 650"''-40% G. 00 t\ f4o\. 50% "50.,.." .707. 0 o t "" '\ V 0 '\.. V ...... ./ ..... 0 0 I/-RJ So. S"SD '0 II "SD ~ 4-V~L£1J9n/ (",...) Using the information in the Data Table, construct a graph on the grid provided next to the Data Table, folloWing the directions below. 2. Mark an appropriate scale on each axis. [1] 3. Label each axis and indicate the units. [1] 4. Plot the data and then connect the points. [1] I 5. Which inference is best supported by the data collected? (1) The 550-nanometer wavelength is probably not very effective for photosynthesis. (2) Increasing the wavelength of light will always increase the rate of photosynthesis. (3) The 450-nanometer wavelength corresponds to green light used in photosynthesis. (4) The rate of photosynthesis is greatest when the photo-synthetic organism is exposed to a wavelength of 550 nanometers.2 6. The diagram at .the right shows an acorn and a metric ruler. How long is the acorn in millimeters? (1) 2.5 mm (2) 25 mm (3) 250 mm (4) 2,500 mm I 7. A response of some plants to exposure to light is a sudden enlargement of the stomates. This makes possible an increased (1) intake of carbon dioxide (2) intake of liquid water (3) intake of oxygen (4) discharge of carbon dioxide The closing of stomates on a leaf would have the least effect on the (1) diffusion of carbon dioxide into the atmosphere (2) release of water vapor from the leaf (3) size of the glucose molecules within the cell (4) diffusion of water molecules into the leaf Base your answers to questions 9 and 10 on the diagram of the internal view of a bean seed and on your knowledge of biology. C 1~--tr-8 4 9. In which structure would most of the stored food for the embryo be found? (1) A (2) B (3)C (4)D 4-10. The epicotyl and the hypocotyl are represented by (1) A and C (2) Band D (3) C and D (4) Aand B 3 11. The internal structure of chloroplasts is best studied with the aid of which type of microscope? (1) simple (2) compound light (3) electron (4) phase contrastBase your answers to questions 12 and 13 on the diagrams below, which represent groups of cells, and on your knowledge of biology. CELL- C ' .. . Aoot Tlaue .3 12. A structure found in cell C which is not found in either cell A or cell B is (1) chromosome (2) nucleus (3) centriole (4) cell wall I 13. A structure found that is foundin cell B in neither cell A nor cell C is (1) chloroplast (2) nucleus (3) centriole (4) cell wall 2 14 • When a thin section of living plant tissue was mounted on a slide and observed under a microscope, it appeared that some of the cells were without nuclei. Which is the most likely explanation for this observation? (1) Cell nuclei can only be seen with the electron microscope. (2) Some nuclei were not in the plane of the section. (3) The cells had insufficient light to form nuclei. (4) The tissue section did not contain nuclei. 2 15. The graph below was developed asa result of an investigation of bacterial counts of three identical cultures grown at different temperatures. Which conclusion might be correctly drawn from this graph? (1) The culture contains no bacteria. (2) Refrigeration retards bacterial reproduction. (3) Temperature is unrelated to the bacteria reproduction rate. (4) Bacteria cannot grow at a temperature of 50 C. I( 3.000 ! 2.000 1.000 CELL-A 10.000 9.000 il ::E 11 5.000 j 1 4.000 jc::::::....-__----~_-5"C o n Ilor••• P.rlod ( Hour.)I 16. Which group of measurement units is correctly arranged in order of increasing size? (1) micrometer, millimeter, centimeter, meter (2) millimeter, micrometer, centimeter, meter (3) meter, micrometer, centimeter, millimeter (4) micrometer, centimeter, millimeter, meter Base, your answers to questions 17 through 20 on the diagram below and your knowledge of biology. The diagram represents details of a cross-section of a corn stem as seen through the high power objective of your microscope. 2 17. The vascular bundle shown is surrounded by a sheath which is made up of a cell type called (1) collenchyma (2) sclerenchyma (3) periderm (4) parenchyma 18. In the stem, the bundle is surrounded by pith cells which are of a cell type called (1) collenchyma (2) sclerenchyma (3) periderm (4) parenchyma 19. A tissue that would conduct nutrients upwards and downwards is indicated by (1)A (2) B (3)C (4) D 2 20. The region indicated by D is a(n) (1) parenchyma cell (2) air space (3) xylem vessel (4) phloem