Name: Bisnan, Ysabel Mari M. Professor: Ma’am Gecelene Es
Date: May 25, 2022
Activity 1
Onion and Cheek Cells
I. Introduction:
Onion Cell
An onion is a multicellular (consisting of many cells) plant organism. As in all plant cells, the cell of an
cell wall, cell membrane, cytoplasm, nucleus and a large vacuole. The nucleus is present at the periphe
vacuole is prominent and present at the centre of the cell. It is surrounded by cytoplasm. The presence
vacuole are indicators that help identify plant cells, such as seen in the onion peel.
Human Cheek Cell
As in all animal cells, the cells of the human cheek do not possess a cell wall. A cell membrane that is se
the cytoplasm. Unlike plant cells, the cytoplasm in an animal cell is denser, granular and occupies a la
in an animal cell is smaller in size, or absent. The nucleus is present at the centre of the cytoplasm
wall and a prominent vacuole are indicators that help identify animal cells, such as cells seen in the hu
II. Objectives
• Understand the different organelles inside the cell and their functions.
• Understand difference between animal cells and plant cells.
• Acquire skills to do the temporary mounts of cells by observing animation and simul
III. Materials
• Glycerine
• Safranin solution
• Dropper
• Forceps
• Distilled water
• Cover slip
• Compound Microscope
IV. Procedure
A. Preparation of Stained Onion Peel Temporary Mount
• Pour some distilled water into a watch glass.
• Peel off a leaf from half a piece of onion and using the forceps, pull out a piece of transparent onio
Date: May 25, 2022
Activity 1
Onion and Cheek Cells
I. Introduction:
Onion Cell
An onion is a multicellular (consisting of many cells) plant organism. As in all plant cells, the cell of an
cell wall, cell membrane, cytoplasm, nucleus and a large vacuole. The nucleus is present at the periphe
vacuole is prominent and present at the centre of the cell. It is surrounded by cytoplasm. The presence
vacuole are indicators that help identify plant cells, such as seen in the onion peel.
Human Cheek Cell
As in all animal cells, the cells of the human cheek do not possess a cell wall. A cell membrane that is se
the cytoplasm. Unlike plant cells, the cytoplasm in an animal cell is denser, granular and occupies a la
in an animal cell is smaller in size, or absent. The nucleus is present at the centre of the cytoplasm
wall and a prominent vacuole are indicators that help identify animal cells, such as cells seen in the hu
II. Objectives
• Understand the different organelles inside the cell and their functions.
• Understand difference between animal cells and plant cells.
• Acquire skills to do the temporary mounts of cells by observing animation and simul
III. Materials
• Glycerine
• Safranin solution
• Dropper
• Forceps
• Distilled water
• Cover slip
• Compound Microscope
IV. Procedure
A. Preparation of Stained Onion Peel Temporary Mount
• Pour some distilled water into a watch glass.
• Peel off a leaf from half a piece of onion and using the forceps, pull out a piece of transparent onio
