OMM

Lesson 7

Exploring Cells

Introduction

See p 82Read p 83-85Discuss

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 cellTitle: Spirogyra cellMagnification: 400XLabel at least two organellesMeasure the cell length

Inquiry 7.2

Prepare a wet-mount slide with a piece of onion…procedure on p 89

Observe under 400X magnificationTitle: Onion CellLabel: cell wall, nucleus, cytoplasmMeasure 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 90Observe Elodea from freshwaterObserve Elodea from salt water

Data:

Drawing of Elodea from freshwaterDrawing of Elodea from salt water

Vocabulary:

cell cell membranecell wall chloroplastchromosome cytoplasmDNA endoplasmic reticulumGolgi bodies lysosomemitochondria nucleusorganelle photosythesisribosome 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 cellTitle: Cheek CellLabel: cell membrane, cytoplasm, nucleusMagnificationMeasure cell length

Inquiry 7.4Observe prepared slide of a

mammalian nerve cellDraw a nerve cell

Title: Nerve CellLabel: cell membrane, cytoplasm, nucleusMagnificationMeasure cell lengthCompare nerve and epithelial cells

Reflection:

Answer questions on page 93