Praktek Bio

7/29/2019 Praktek Bio

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Experiment 1

Purpose

observe the structure of plant cells and animal cells and dead cells (cork cells)

Equipment and materials

1. Microscope

2. Glass objects and glass cover3. Pipette drops

4. Razor blade

5. Ttissue6. Methylene blue

7. Water

8. Onion

9. Cork cassava tissue10. Carrots

11.Rhoeo discolor

12. Preparations preserved several typesof animal cells

Working procedures1. Slice the onion lengthwise

2. Drops with methylene blue and cover with glass cover

3. Observe under a microscope with a magnification of weak first, and then a new morepowerful magnification

4. Pictures and give descriptions.

5. Do well on cork cassava, carrots,Rhoeo discolor6. For preparations preserved several types of animal cells, directly observed under the

microscope

Observations

1. Pictures for preparation of onion

( the magnitude 40 x )


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Source : Observe under a microscope Source : Browse from interne

2. Pictures for preparation of carrot


Source : Observe under a microscope Source : Browse from internet

3. Pictures for preparation of cork cassava




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4. Pictures for preparation of preserved several types of animal cells

a. Skeletal muscle



b. Cardiac muscle




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c. Amoeba




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Experiment 2

Purpose

Observing plants cells and animal cells

Equipment and materials

1. Microscope

2. Glass objects and glasscover

3. Tweezers

4. Pipette drops5. Methylene blue

6. Lugol

7. Onion8. Toothpick

9. Razor blade

10. Tissue11. Distilled water

A. Observing plants cells

Working procedures

1. Sliced onion (1 x 1 cm), placed on glass objects

2. Drops with lugol and cover with glass cover3. Observe under a microscope with a magnification of weak first, and then a new

more powerful magnification

4. Pictures and give descriptions these observations

Observations

1. Pictures for preparation of Bombay onion




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B. Observing animal cells

Working procedures

1. Provide glass preparations, then the pipette, drops with a drop of water

2. Incised in the walls of the oral cavity using a blunt toothpick3. Apply the results of these scratches on the glass slide that has been poured the

water, then cover with glass cover.

4. To appear more clearly, with a drop of methylene blue5. Observe under a microscope with a magnification of weak first, and then a new

more powerful magnification

6. Pictures and give descriptions these observations.

Observations

Pictures for preparation of the walls of the oral cavity




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Conclusion

Plants and animal cells commonly have equal size. The difference between both

depend on their outer layer. The most outer layer of animal cell is cell membrane,

meanwhile the most outer layer of plant cell is cell wall. Beside that, in cytoplasmplant cell contain plastid particularly chloroplast (use photosynthesis process) that

there is not on animal cell.


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LAPORAN HASIL PRAKTIKUM BIOLOGI

( observe the structure of plant cells and animal cells )


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Name of member : Jessica Purwanti (15)

Laily Rahmawati (19)

Maria Alviani K. (22)Nurkartika Rukmana (27)

Class : XI IPA 3

SMA NEGERI 1 REMBANG

2010

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