ANIMAL CELLS BAB 1 CSCIENCE kelas 7.pptx

cambridge science

1. CELLS Cambridge Science 7 th Grade Created by Yulinar , S.Pd

2. PICTURE GAME What is it? DOOR

3. PICTURE GAME What is it? FRIDGE

4. PICTURE GAME What is it? FLOOR, CHAIR AND TABLE

5. PICTURE GAME What is it? CHEF

6. PICTURE GAME Where can we find them?

7. All the mentioned things and people are what makes up a restaurant. They all have basic structure and function. Can you find out what lesson will be discussing today?

8. CELLS

9. What are cells ?

10. Cells Cells are the smallest unit of living things that can carry out basic processes of life. Most cells are microscopic. Cells come from other pre-existing cells or another cells. A cell divided or split into two new cells and so did the cells before that and so on.

11. What is inside a cell ?

12. What is inside a cell ? All organism are made up of cells and your own body has more than 200 different kinds of cells. Plant and animal cells have several basic structure, called Organelles , that help them perform life processes. Organelles have functions that help keep cells alive.

13. ANIMAL CELLS Part of Animal Cells

14. Cell Membrane It is a flexible wrapping that surrounds an animal cell. It is layer around the outside of the cell. It wraps around the cells the same way your skin wraps around you. It gives the cell its shape. It control what material move into and out of the cell. Only certain substances are able to enter and leave the cell. Cell Membrane

15. Cytoplasm It is a gel like liquid that fills the region between the nucleus and the cell membrane. It is mostly made up of water which a variety of organelles float in the cytoplasm. It supports all cell’s structures and it constantly moves through the cell in stream like motion. Some of the cells life processes take place in the cytoplasm. Cytoplasm

16. Nucleus The brain of the cell. It is the cell’s control center and most cells have this. It is a large, round organelle usually found in the center of the cell. Easy to see with a microscope. It has a membrane with pores or opening that allow certain material to pass in and out. Nucleus

17. Mitochondria It is powerhouse of the cell. They are oval, membrane covered organelles that supply energy for the cell. They break down food which releases energy for the cell to use Each mitochondria is a tiny powerplant. Cells that require a lot of energy such as muscle cells have many mitochondria. Mitochondria

18. Vacuoles It is a membrane covered structure used for storage. It can store water, food and wastes. The nucleus can signal a vacuole to release whatever it is storing. Some animal cells, have many small vacuoles and some may not have any vacuoles. Vacuoles

19. Guess the organelles and write the function! 2 4 3 1 5