Science Worksheet - Grade 8 Intermediate Level - The University Of The State Of New York - 2012 Page 22

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Base your answers to questions 67 and 68 on the diagram below and on your knowledge of science. The
diagram represents an enlarged view of a plant cell. Several cell structures have been labeled.
Cell
membrane
Chloroplast
Cytoplasm
Large
vacuole
Cell wall
67 Identify two labeled structures that identify this cell as a plant cell rather than an animal cell. [
]
1
(1) _______________________________
(2) _______________________________
68 Identify one other structure that could be found in this plant cell that is not labeled in the diagram. [
]
1
__________________________________
Base your answers to questions 69 and 70 on the information below and on your knowledge of science.
A student performed an experiment in which 10 mL of a strong acid was placed on a
sample of limestone. Bubbles formed where the acid touched the limestone. After 20 minutes,
the bubbling stopped and the surface of the limestone appeared unchanged.
69 Identify one observation that shows a chemical reaction occurred between the acid and the limestone. [
]
1
______________________________________________________________________________________
70 Explain why limestone buildings are weathered by acid rain even though the limestone sample in this
experiment did not appear to be changed by the strong acid. [
]
1
______________________________________________________________________________________
______________________________________________________________________________________
[22]
Grade 8 Science — June ’12

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