PLANT CELL AND ANIMAL CELL grade 71.pptx

Science 7

1. PLANT CELL AND ANIMAL CELL GRADE 7 QUARTER 2- MODULE 3

2. HOW DOES A CELL LOOK LIKE ? The cells of animals, plants, and other organisms have three basic structures. These are : Cell membrane – the outer boundary of the cell. Nucleus – controls most of the activities of the cell. Cytoplasm – the gelatinous liquid between cell boundary and nucleus .

3. The cell membrane or plasma membrane surrounds the cell's contents and separates it from other cells and the environment. It also controls the entry of materials in and out of the cell. Cytoplasm - a jelly-like structure where the cell's contents, such as organelles, are embedded.

4. Mostly found at the center is a large, round, membrane-bound organelle called the nucleus . Organelles are the specialized structure that performs specific functions inside the cell.

5. Near the nucleus of an animal cell, we can also find a cylindrically shaped organelle called centrioles and play a vital role in cell division Chromosomes are molecules in the nucleus made up of DNA and protein.

6. A nuclear membrane covers the nucleus, regulating the passage of materials in and out of it.

7. Organelles of the Cell As you enter the cytoplasm, you might bump into sausage-shaped bodies called mitochondria . Commonly called the "powerhouses" of the cell, they turn the chemicals from food into energy that the cells can use. Within the cytoplasm, we can find a network of canals called the endoplasmic reticulum .

8. Organelles of the Cell Ribosomes are tiny particles that serve as protein factories found in the cytoplasm and on the endoplasmic reticulum. In a manufacturing business, products are packaged and moved to a loading center to be carried away. Structures called Golgi bodies are the packaging and releasing centers of the cell.

9. Organelles of the Cell A structure called lysosome contains chemicals that digest wastes and worn-out/damaged cell parts. When a cell dies, chemicals in the lysosomes act to quickly break down the cell, but in a healthy cell, the membrane around the lysosome keeps it from breaking down the cell itself. Cells of a plant do not have lysosomes.

10. Organelles of the Cell Vacuoles are storage areas in cells, and they may store water, food, or waste products. It also helps maintain water balance in plant cells. In animal cells, vacuoles are small.

11. Activity !!!!!!! Identify the different parts of the cells illustrated below and answer the guide questions that follow. Write your answers on your answer sheet. Identify the different parts of a plant cell. Write your answers on your answer sheet.

12. Activity !!!!!!! Identify the parts of an animal cell. Write your answers on your answer sheet .