PART B
(36) Allow 1 credit for identifying, by name, an organelle shown in the diagram. Appropriate
responses include, but are not limited to:
A = vacuole (or food vacuole)
B = vacuole (or contractile vacuole)
C = nucleus
D = cell membrane
(37) Allow 1 credit for explaining how the organelle selected in question 36 assists in the
maintenance of homeostasis. [Note: students may receive credit for the correct function
of the organelle chosen, even if the name of the organelle was incorrect in question 36.1
Appropriate responses include, but are not limited to:
A = Food is digested (or stored) in the vacuole.
B = Liquid wastes are stored in the vacuole.
C = The nucleus controls the activities of the cell.
D = The cell membrane controls the movement of molecules into and. out of the cell.
(38) Allow 1 credit for identifying a system in the human body (no1 an organ) that performs
a function similar to that of the organelle selected in question 36. Appropriate responses
include, but are not limited to:
A = digestive system
B = excretory system
C = nervous system
D -= excretory system, lining of digestive system (or respiratory system)
(39) Allow 1 credit for marking appropriate scales on the two axes (Both scales must be
correct for full credit.)
(40) Allow 1 credit for plotting the data accurately (according to its dependent/independent
variables) and connecting the points. Example of an appropriate graph:
(41) -2
(42) Allow 1 credit for stating one effect of increasing the intensity and duration of exposure
to light on the production of oxygen by duckweed plant!. Appropriate responses include,
but are not limited to:
-The production of oxygen would increase
(43) 3
(44) 1
(45) Allow 1 credit for stating an ecological drawback to ,he use of the “dig and dump”
method. Appropriate responses include, but are not limit< d to:
-The dig and dump method adds .wastes to landfills tliat are overloaded.
--It’s messy.
--It only moves the contaminated soil, from one place to another.
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