"Structure and Function of Human and Animal Cells" PPT courseware

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"Structure and Function of Human and Animal Cells" PPT courseware

Part One: Review

1. Structure of plant cells

2. Function of plant cells

Quick answer

1. Onion epidermal cells are approximately rectangular. What structure maintains the cell shape?

2. What is the structure that allows beneficial substances to enter but prevents harmful substances from entering?

3. When we eat watermelon, the sweet juice will flow out. Which structure does it come from?

4. Where is the main place for life activities? What structures in this structure are involved in photosynthesis and respiration in plants?

5. In what structure of cells does genetic material exist?

PPT on the structure and function of human and animal cells, part 2: several types of cells in the human body

think:

Human and animal cells differ in shape and size from plant cells.

Are the structures of human and animal cells the same as plant cells?

What are the structures of human and animal cells?

PPT on the structure and function of human and animal cells, part 3: classroom experiments

Producer of temporary mounts of oral epithelial cells

1. Can you summarize the operation steps in a few words?

Rub, drop, paint, cover, dye, suck.

2. What is dropped in the center of the slide? Why?

The mass fraction is 0.9% normal saline.

In order to maintain the normal shape of cells.

3. Why should you rinse your mouth with cold water?

Prevent other impurities present in the oral cavity from affecting the observation effect.

4. Do I need to tear it off to obtain biological materials?

No, use the blunt end of a toothpick to gently scrape the inner wall of your mouth.

5. What should you pay attention to when covering the coverslip?

Try to avoid creating air bubbles.

6. How should it be dyed?

Drop iodine solution on one side of the coverslip, and absorb it with absorbent paper on the other side. Repeat 2 to 3 times. This will allow the dye to soak into the entire material, and the dyeing will be more complete and even.

PPT on the structure and function of human and animal cells, Part 4: Structure of human oral epithelial cells

(1) What are the structural similarities and differences between plant cells and human and animal cells?

Similarities: cell membrane, cytoplasm, nucleus, mitochondria;

Differences: There are no cell walls, chloroplasts, or large vacuoles in human and animal cells.

(2) Do the functions of the same structure also have the same function? yes.

(3) In the observation experiment, what structure did you use to determine that what you saw was a cell and not a bubble? Cell nucleus.

PPT on the structure and function of human and animal cells, Part 5: Class summary

1. Structure and function of human and animal cells

human and animal cells

Cell membrane: controls the entry and exit of substances inside and outside the cell

Cytoplasm: an important place for life activities

Nucleus: contains genetic material and can transmit genetic information

Mitochondria in the cytoplasm: related to respiration

2. Structural similarities and differences between human and animal cells and plant cells

Similar points: they all have cell membrane, cytoplasm, and nucleus;

Differences: There are no cell walls, chloroplasts, or large central vacuoles in human and animal cells.

3. The important function of the cell nucleus in biological inheritance

PPT on the structure and function of human and animal cells, part 6: training to meet standards

1. The cellular structure that plays an important role in the genetics of organisms is ( )

A. cell wall b. cell membrane c. Cytoplasm D. cell nucleus

2. Which cell structure can convert energy ( )

A. Cell membrane B. Nucleus c. Endoplasmic reticulum D. Mitochondria

3. The outermost structure of human cells is ( )

A. cell wall b. cell membrane c. Chloroplast D. cell nucleus

4. Bubbles appeared during temporary loading. This is mainly due to which operation step does not meet the requirements ( )

A. Clean film B. dripping water c. Cover slip D. dyeing

5. When making temporary slide specimens of human oral epithelial cells, the scraped oral epithelial cells should be smeared into 0.9% physiological saline, not clear water. The purpose is to( )

A. Prevent bacteria from multiplying during mounting

B． Prevent cells from absorbing too much water and causing rupture

C. Kill cells quickly for observation

D. Use saline to stick cells

Keywords: Jiangsu Education Edition seventh grade biology PPT courseware free download, structure and function of human and animal cells PPT download, .PPT format;

For more information about the PPT courseware "Cells are the basic unit of life activities, the structure and function of human and animal cells", please click the Cell is the basic unit of life activities ppt structure and function of human and animal cells ppt tag.

"Structure and Function of Human and Animal Cells" PPT:

"Structure and Function of Human and Animal Cells" PPT Part One Content: Observation: Human Oral Epithelial Cells Discussion: Experimental Steps for Observing the Structure of Human Oral Epithelial Cells Tips: 1. The steps for observing the structure of onion scale leaf epidermal cells can be used as a reference. 2. Reading textbook P3..

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Update Time: 2024-11-19

This template belongs to biology courseware Jiangsu Education Edition Seventh Grade Biology Volume 1 industry PPT template

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