Cell Biology | Grade 6 | Unit 1 - Concept 1 - Lesson 6 | Science

شرح ساينس الصف السادس الابتدائي لغات - الفصل الدراسي الأول
شرح ساينس سادسة ابتدائي - ترم أول

لينك تحميل الملزمة
https://drive.google.com/file/d/1WPpQ...


لينك تليجرام
https://t.me/mrahmedelbashagroup


In This Part :
Careers and Cell Biology:
• Cells are very tiny, where the diameter of an animal cell is about (0.001 cm).
• Cell biologists use microscopes to magnify cells, so they seem larger.
• Cell biologists analyze data and present their conclusions to other researchers, where:
- Some cell biologists work with doctors to watch how cells can work to repair body parts or how cells respond to different medicines.
- Some other cell biologists work in agriculture to study how plant cells respond to different environmental factors.

Staining Cells:
- Cells are usually clear and colorless, so it is hard to see their structures under microscope.
- Stains (dyes) are used to add color and make the cell's structures more visible.
- There are different types of stains, where some stains are used to highlight one part of cells and make it more
visible such as "methylene blue" dye that helps you see the nucleus as a blue area in a sample of cheek lined membrane cells.

Cells in 3D:
• Scientists have built a microscope that shows the cell in 3D, which means that they can see the top, sides and layers of a cell, where:
- The 3D microscope takes pictures of a cell in layers.
- Then, a computer puts these layers together.
- Finally, colors are added to the formed image.

• The 3D microscope can help:
- Cell biologists learn more about cell components and how cells divide.

بالتوفيق
مستر احمد الباشا