Name
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
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]
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.
6. The diagram at .the right shows an acorn
and a metric ruler. How long is the
acorn in millimeters?
2.5 mm
(2) 25 mm
(3) 250 mm
(4) 2,500 mm
(1)
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
8. 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.
1~-'-8
C
9. In which structure would most of the stored food for the
embryo be found?
(1) A
(3) C
(2) B
(4) D
10. The epicotyl and the hypocotyl are represented by
(1) A and C
(2) Band D
(3) C and D
(4) A and B
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 contrast
Base your answers to questions 12 and 13 on the diagrams below, which
represent groups of cells, and on your knowledge of biology.
CELL- A
CELL- C
'.
12. A structure found in cell C which is not found in either
cell A or cell B is
(1) chromosome
(2) nucleus
(4) cell wall
(3) centriole
13. A structure found in cell B that is found in neither
cell A nor cell C is
(2) nucleus
(1) chloroplast
(4) cell wall
(3) centriole
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.
15. The graph below was developed as a 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.
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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.
A
B
B
c
D
17. The vascular bundle shown is
which is made up of a cell
(1) collenchyma
(3) periderm
surrounded by a sheath
type called
(2) sclerenchyma
(4) parenchyma
18. In the stem, the bundle is surrounded by pith cells
which are of a cell type called
(1) collenchyma
(2) sclerenchyma
(4) parenchyma
(3) periderm
19. A tissue that would conduct nutrients upwards and
downwards is indicated by
A
(2) B
(3) C
(4) D
(1)
20. The region indicated by D is a(n)
(1) parenchyma cell
(2) air space
(3) xylem vessel
(4) phloem tube