ORGANELLES ANIMAL CELL REMEMBER SOMETHING ABOUT THE PARTS OF THE CELL? AS WELL AS YOU HAVE ORGANS, THE CELLS HAVE SOMETHING THAT WE CALL ORGANELLES

THIS WAS AN ANIMAL CELL… PAY CLOSE ATTENTION TO IT THIS WAS AN ANIMAL CELL… PAY CLOSE ATTENTION TO IT. DO YOU REMEMBER SOME OF ITS PARTS? MITO….. LYSO…… NUC…………. CELL MEM……….. RIBO……………

NOW, LET´S START WITH THE COVERING LAYER OF THE CELL NOW, LET´S START WITH THE COVERING LAYER OF THE CELL. THE NAME IS DIFFERENT FOR PLANTS AND ANIMALS. IN ANIMAL CELLS THE NAME IS CELLULAR MEMBRANE IN PLANT CELLS THE NAME IS CELL WALL

ANIMAL CELL???? OR CELL WALL???? WHAT DO YOU THINK THAT WAS? ANIMAL CELL???? OR CELL WALL????

ANIMAL CELL???? OR CELL WALL???? WHAT DO YOU THINK THAT WAS? ANIMAL CELL???? OR CELL WALL????

LOOK THE DIFFERENCE BETWEEN THEM, THE FOLLOWING IMAGES ARE CELL WALLS

NOW… COMPARE

THEY LOOK PRETTY DIFFERENT, DON´T YOU THINK SO? LET´S LIST THE MAIN DIFFERENCES BETWEEN THEM (BY THE WAY, AT THIS MOMENT YOU HAVE TO COPY ON YOUR NOTEBOOK)

WELL, THAT WAS THE CELL MEMBRANE Vs THE CELL WALL, NOW, ARE YOU READY TO TAKE A QUIZ? QUESTION: WHY DO YOU THINK CELL WALLS ARE THICKER THAN CELL MEMBRANES? A. BECAUSE IT WOULD BE MUCH MORE DIFFICULT FOR HERBIVORES TO EAT THEM B. BECAUSE THE MORE THICKER IT IS MORE NUTRIENTS IT HAVE C. BECAUSE THAT IS THE WAY NATURE IS AND THERE ARE NO EXPLAINATIONS D. BECAUSE IF SOMETHING IS SOFT AS THE CELL MEMBRANE IT IS HARDER TO EAT IT, INSTEAD, IF IT IS HARD AND STRONG AS THE CELL WALL IT WOULD BE EASIER TO EAT IT… SOUND LOGICAL DON´T YOU THINK SO.

REVIEW ABOUT CELL WALL AND CELL MEMBRANE. The main function of the cell wall and the cell membrane is to give support and allow the movement of substances like water and nutrients in and out the cell. CELL WALL Is thicker than the cell membrane. It is rich in cellulose It is harder to break it All these reasons make the cell wall harder to eat and that´s why sometimes we have to cook the vegetables we eat during long periods of time. It is even har for the chemical juices of your stomach to digest the cell wall and cooking and heating we help this process to be much more efficient. CELL MEMBRANE It is softer than cell wall. It is not rich in cellulose It is much more simple to break it All these reasons make the cell membrane easier to break and digest, have you ever eat sushi, it is made up of raw fish, and when we eat it we don´t have any digestion problems

CYTOPLASM

THE CYTOPLASM *WHAT IS IT? *WHAT IS ITS FUNCTION? SUPPOSE THIS IS A CELL, THE CYTOPLASM WOULD BE:

THE BLUE PART REPRESENT THE CYTOPLASM, ITS FUNCTION IS TO HOLD THE OTHER ORGANELLES PRESENT IN THE CELL. THE CYTOPLASM IS MADE UP OF SUGARS, SALTS, PROTEINS, AMINOACIDS AMONG OTHERS, AND IT IS ALSO MADE UP OF A NET OF PROTEIN FIBERS CALLED THE CYTOSKELETON. ALL THESE THINGS TOGETHER MAKE A STRONG, RESISTANT SPACE FOR THE ORGANELLES HANG ON, ORGANELLES ARE NOT JUST FLOTING, THEY ARE HOLDED ON TO THE FIBERS OF THE CYTOSKELETON.

THE NUCLEUS

The nucleus is one of the most visible parts of cells, it is made up by the nuclear membrane (it separates the nucleus of the rest of the cell), the nucleolus (it is important for the ribosome formation) and the chromatin (which is made up of DNA and during cell reproduction forms the chromosomes)

VACUOLES

Vacuoles are present in animal and vegetable cells, they are bubble like structures which function is to store water, sugars, salts and pigments

RIBOSOMES

Ribosomes can be anywhere in the cytoplasm or attached to the rough endoplasmic reticulum, the principal function of ribosomes is to create proteins and proteins is the chemical compound that forms your muscles and almost every part of your body

ROUGH ENDOPLASMIC RETICULUM