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CELL OBSERVATION LAB ACTIVITY.
SYNTHESIS STAGE.
TECAHER INGRID ROCÍO MARÍN HOYOS
Student name ____________________________________ Grade ___________________ Date __________
Understanding Performances.
 Identifying of cellular organelles to understand the specific function of each cellular organelle.
Ongoing assessment.
 S. Describes the structure of cellular organelles and compare it with the function.
 S. Relates specific result with a framework
 S. Distinguishes specific cellular organelles with the cellular function.
Concepts: Shape and function.
CELL OBSERVATION LAB ACTIVITY
Materials:
Glass
Slides
Cover slips
Droppers
Onion Skin
Various prepared slides (blood, cork)
Methylene blue dye
Procedure.
A. Obtain a clean slide. If the slide needs to be cleaned, rinse your slide with water and wipe dry. Place a drop
of iodine in the middle of the clean slide.
B. Peel a thin layer of onion skin.
C. Place the onion peel in the drop of iodine and then add a cover slip. Make sure the onion peel is flat.
D. Examine the onion under your microscope. Using a pencil, draw your observations below.
E. Label the Cell wall, Nucleus, Cytoplasm. If you’re lucky, you can find the Nucleolus.
F Repeat the procedure since part D with other prepared slides.
G. Do not forget take notes in your science notebook.
To raise new questions, new possibilities, to regard old problems
from a new angle, requires creative imagination and
marks real advance in science.
“Albert Einstein”

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Lab seventh grade. cell.docx

  • 1. CELL OBSERVATION LAB ACTIVITY. SYNTHESIS STAGE. TECAHER INGRID ROCÍO MARÍN HOYOS Student name ____________________________________ Grade ___________________ Date __________ Understanding Performances.  Identifying of cellular organelles to understand the specific function of each cellular organelle. Ongoing assessment.  S. Describes the structure of cellular organelles and compare it with the function.  S. Relates specific result with a framework  S. Distinguishes specific cellular organelles with the cellular function. Concepts: Shape and function. CELL OBSERVATION LAB ACTIVITY Materials: Glass Slides Cover slips Droppers Onion Skin Various prepared slides (blood, cork) Methylene blue dye Procedure. A. Obtain a clean slide. If the slide needs to be cleaned, rinse your slide with water and wipe dry. Place a drop of iodine in the middle of the clean slide. B. Peel a thin layer of onion skin. C. Place the onion peel in the drop of iodine and then add a cover slip. Make sure the onion peel is flat. D. Examine the onion under your microscope. Using a pencil, draw your observations below. E. Label the Cell wall, Nucleus, Cytoplasm. If you’re lucky, you can find the Nucleolus. F Repeat the procedure since part D with other prepared slides. G. Do not forget take notes in your science notebook. To raise new questions, new possibilities, to regard old problems from a new angle, requires creative imagination and marks real advance in science. “Albert Einstein”