"Observe the living world around you with a microscope (2)" Tiny World PPT

Description

"Observe the living world around you with a microscope (2)" Tiny World PPT

Part One: Observation of Biological Cells

Small information

After Robert Hooke first discovered "cells", many scholars observed and studied plant stems, buds, fruits, as well as animal blood and lower animals under microscopes, and found that they all had the cells described by Hooke. structure. With the improvement of microscope manufacturing technology, people's research on cells has become more and more extensive and in-depth. A large number of research facts have shown that living organisms are composed of cells.

The establishment of the cell theory is hailed as one of the three major discoveries in natural science in the 19th century.

Use a microscope to observe the living world around you PPT, Part 2: The role of cells

What is the significance of cells to living organisms?

Check out relevant information and organize what you learned about the functions of cells into a network diagram.

Red blood cells in the blood transport inhaled oxygen and produced carbon dioxide;

Nerve cells have the function of conducting excitation;

Lymphocytes play an immune role;

The mesophyll cells of plants can perform photosynthesis to synthesize organic matter;

Phagocytes in body fluids have the function of destroying antigens;

Muscle cells have a role in movement;

Stem cells have the function of differentiating into new cells;

Epidermal cells play a role in tissue protection;

Retinal cells are photosensitive.

Use a microscope to observe the living world around you PPT, Part 3: Class Summary

After studying this lesson, what do you know about cells?

All living organisms are composed of cells. Cells have various shapes and have different functions.

Cells are the most basic structural unit of organisms and the most basic functional units of organisms.

Life activities such as respiration, digestion, excretion, growth, development, reproduction, heredity and other biological activities are all carried out through cells.

Keywords: Free download of Chinese PPT courseware for the second volume of the sixth grade in the textbook version, use a microscope to observe the living world around you PPT download, download of the tiny world PPT, .PPT format;

For more information about the PPT courseware "Use a Microscope to Observe the Living World Around You in a Tiny World", please click on the Tiny World ppt Use a Microscope to Observe the Living World Around You ppt tag.

"Tiny World and Us" Tiny World PPT download:

"Tiny World and Us" Tiny World PPT Download Part One: Review and Summary How have human observation tools developed from ancient times to the present? How do people expand their observation horizons? ... ... ... Tiny World and Us PPT, Part 2...

"Tiny World and Us" Tiny World PPT:

"Tiny World and Us" Tiny World PPT Part One Content: Review and Summary Review the learning content of this unit, think about how human observation tools have developed from ancient times to the present, and how people's observation horizons have expanded. Let's talk about two relationship between them. ..

"Use a microscope to observe the living world around you (3)" Micro World PPT teaching courseware:

"Observe the living world around you with a microscope (3)" Micro World PPT teaching courseware Part One: Questions before class 1. Move the film to the left, where will the objects under the microscope move? Move to the right 2. What does the word above look like when placed under a microscope? 3.How to make foreign...

File Info

Update Time: 2024-10-01

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 2 industry PPT template

Preview