"Cell Proliferation" Cell Life Course PPT Teaching Courseware

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"Cell Proliferation" Cell Life Course PPT Teaching Courseware

The first part of the content: Independent preview plan before class

1. Mitosis of animal cells

1. Differences in mitosis of animal and plant cells[Fill in the table]

2. Characteristics and significance of mitosis

(1) Characteristics: Precisely and evenly distribute the ______ of the replicated parent cells into ______.

(2) Significance: The stability of ______ is maintained between the parent and offspring of the cell.

2. Amitosis

3. Cells cannot grow indefinitely

The limiting factor that prevents cells from growing indefinitely

4. Observe the mitosis of tissue cells in the root apical meristem zone

1. Experimental principle

(1) The ______ at the root tips and stem tips of higher plants can undergo mitosis.

(2) Under a high-power microscope, the stage of mitosis that the cell is in can be identified based on the morphology of ______ within the cell.

(3) Chromosomes in the nucleus are easily stained by ______ (such as gentian violet solution).

(4) A mixture of hydrochloric acid and alcohol can cause cells in tissues to ______.

2. Experimental reagents

(1) Dissociation solution: prepared from ____________ and ____________ at a ratio of 1:1.

(2) Gentian violet solution (or acetic acid magenta solution): color ______.

(3) Rinse solution: ______, wash away the dissociation solution in the tissue.

Cell Proliferation PPT, Part 2 Content: Classroom Interactive Research Case

【Course Standards】

Describes the different ways cells divide, among which mitosis ensures the consistency of genetic information in parent and daughter cells

Make and observe simple mounting of root tip cell mitosis, or observe their permanent mounting

[Achievement of quality]

1. Through comparative analysis, the similarities and differences of mitosis in animal and plant cells are elucidated. (scientific thinking)

2. Observe the schematic diagram of cell division, draw coordinate curves by hand, and understand the characteristics of the changes in the number of chromosomes, DNA and other materials during mitosis. (scientific thinking)

3. Make mounting slides and observe the mitotic process of root apical meristem cells. (scientific inquiry)

Research point one: Comparison of mitosis and amitosis of animal and plant cells

【Teacher's Guidance】

The picture shows a comparison of mitosis in animal cells and higher plant cells. According to the picture analysis:

1. What are the main differences between the interphase of animal and plant cell divisions?

Answer: The structures where duplication occurs are not exactly the same. Animals also have duplication of centrosomes.

2. What are the differences in the way spindles are formed during early cell division in animals and plants?

Answer: Higher plant cells are formed by spindle fibers emitting from the poles of the cell, and animal cells are formed by star rays emitted around the centriole.

3. What are the differences in the way cells divide into two at the end of cell division in animals and plants?

Answer: A cell plate appears in the center of higher plant cells and expands to form a cell wall. One cell forms two daughter cells; the animal cell membrane dents inward from the middle of the cell, and one cell constricts into two daughter cells.

【Detection feedback】

1. (Must pass the test) Regarding the mitosis of higher animal and plant cells, the correct statement is ()

A. During nuclear division, chromosomes behave differently

B． Cytoplasm divides in the same way

C. Spindles form and disappear in the same way

D. Different roles of Golgi apparatus at the end of cell division

2. (Required to pass the examination) The picture shows an image of cells of a higher organism undergoing mitosis at a certain stage. Which of the following statements is incorrect ()

A. The creature is a plant

B． This cell contains 8 chromatids

C. The cell is in late stage of mitosis

D. The cell contains 8 chromosomes

3. (Must pass the exam) Which of the following statements about amitosis is wrong ()

A. The unique way of cell division in lower organisms

B． There is also a process of duplication of genetic material

C. Spindle fibers do not appear during division

D. No chromosomal changes occur during division

Cell proliferation PPT, the third part: [Backbone implementation]

1. The main differences between animal cells and higher plant cells in mitosis are:

(1) Centriole doubling during interphase.

(2) The prophase spindle is composed of star rays emitted by centrioles.

(3) In the late stage, the cell membrane is sunken from the middle and the cell is split into two parts.

2. Amitosis does not show changes in spindle fibers and chromosomes.

3. The role of gentian violet solution or acetic acid magenta solution is to color chromosomes, and the role of hydrochloric acid and alcohol is to dissociate plant cells.

4. The process of making onion root tip cell mitotic slides: dissociation → rinsing → staining → preparation.

5. Since interphase lasts the longest, there are the greatest number of cells in interphase.

Keywords: PPT courseware for high school biology compulsory course 1 from the People's Education Press is available for free download, cell proliferation PPT download, cell life course PPT download, .PPT format;

For more information about the PPT courseware "Life Course of Cells and Proliferation of Cells", please click on the Life Course of Cells ppt Cell Proliferation ppt tag.

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Update Time: 2024-06-28

This template belongs to biology courseware High School Biology Compulsory Course 1, published by People's Education Press industry PPT template

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