Description given on Youtube:
http://www.sciencetutorial4u.com This video covers animal and plant cells structures and function for students studying for GCSE additional Science Biology.
Refer to these timings to cover:
1. The structure of the cells 00:28
2. The function of the cells 02:36
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Progress Test video on CELLS:
1. THE STRUCTURE OF THE CELLS 00:28
Animal cells have 5 main parts (organelles) which are nucleus, cytoplasm, cell membrane, ribosomes and mitochondria.
Plant cells have extra 3 organelles compared to animal cells. These parts are cell wall, vacuole and chloroplast, which look green in colour.
2. THE FUNCTIONS OF THE ORGANELLES 02:36
NUCLEUS
-Contains genetic materials.
-Controls the activity of the cell.
CYTOPLASM
-It is a jelly like substance.
-It is where chemical reactions takes place.
CELL MEMBRANE
-Controls what goes in and out of the cell
-It is a partially permeable membrane which means it only lets small substance such as water molecules to pass through but not large substances)
RIBOSOMES
-It is involved in protein synthesis.
MITOCHONDRIA
It provides energy by performing the process of respiration. The equation for respiration is glucose (food) and oxygen arrow carbon dioxide, water and energy. if you write this equation in reverse order then you will get the equation of photosynthesis, but the energy has to be written on the top of the arrow as light energy.
CELL WALL
Cell wall is made up of cellulose and its main function is to keep the cell rigid and it is responsible for the shape of the plant cells.
VACUOLE
it contains cell sap which stores sugar and salt.
CHLOROPLAST
Chloroplast contains a green pigment called chlorophyll. Chlorophylls trap sunlight to make glucose (food) by a process know as photosynthesis.
MUSICS:
“Son of a Rocket” Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/
“Cut and Run” Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
http://creativecommons.org/licenses/by/3.0/