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Lesson 7
Exploring Cells
Introduction
See p 82
Read p 83-85
Discuss
Inquiry 7.1
Obtain a sample of Spirogyra
Observe under 100X magnification
and discuss how this alga got its
name
Inquiry 7.1
Observe under 400X and focus on
one cell
Draw the cell
Title: Spirogyra cell
Magnification: 400X
Label at least two organelles
Measure the cell length
Inquiry 7.2
Prepare a wet-mount slide with a
piece of onion…procedure on p 89
Observe under 400X magnification
Title: Onion Cell
Label: cell wall, nucleus, cytoplasm
Measure cell length
Why are there no chloroplasts?
Inquiry 7.3 Question
How does salt effect a plant cell?
Hypothesis:
If…then…because
Procedure:
See p 90
Observe Elodea from freshwater
Observe Elodea from salt water
Data:
Drawing of Elodea from freshwater
Drawing of Elodea from salt water
Vocabulary:
cell
cell wall
chromosome
DNA
Golgi bodies
mitochondria
organelle
ribosome
cell membrane
chloroplast
cytoplasm
endoplasmic reticulum
lysosome
nucleus
photosythesis
vacuole
Conclusion:
A conclusion answers the original
question (look back at the question).
Be sure to write complete sentences.
Use and underline each of the
vocabulary words that apply to Inquiry
7.3 in writing your conclusion.
Inquiry 7.4
Observe prepared slide of
mammalian epithelial tissue
Draw an epithelial cell
Title: Cheek Cell
Label: cell membrane, cytoplasm, nucleus
Magnification
Measure cell length
Inquiry 7.4
Observe prepared slide of a
mammalian nerve cell
Draw a nerve cell
Title: Nerve Cell
Label: cell membrane, cytoplasm, nucleus
Magnification
Measure cell length
Compare nerve and epithelial cells
Reflection:
Answer questions on page 93