Cells

• Selectively permeable • Allows solutes to move between the cell and the external environment • Phospho lipid bi layer • Contains a protein channel

• Storage centre of cells DNA • Nuclear pores: A protein channel that links the nucleus to the cytoplasm • Nucleolus: the largest part of the nucleus

Function: rigid boundary for plant cells outside the cell membrane

• Surrounds the organelles - Contains nutrients

Function: protein synthesis Rough endoplasmic reticulum (rER) • moves proteins within the cell • covered in ribosomes Smooth endoplasmic reticulum (sER) -moves lipids around the cell

Function: receives proteins form the rER and distributes them to other organelles or out the cell - receiving, processing, packaging and shipping

Function: converts energy food (sugar) into usable energy for wok (ATP)

Function: breaks down food particles, invading objects or worn out cell parts

Function: cell movement • Cillia short extrusions from cell surface • Flagella long extrusions from cell surface

• Temporary storage of waste nutrients of water - larger in plants then animal cells

• Used for photosynthesis • Only in plants • Converts light energy to chemical energy stored in bonds of glucose

IN: • sugars • protiens • fats • salts • 02 • H20 OUT: waste -ammonia -salts

• Makes “doors” through the membrane • allow substances in and out • Specific channels allow specific materials in and out

60%

• Steepness of the concentration gradient • temprature • The surface area • Types of molecules • It is passive transport so no energy is needed

• Cells that need molecules to move against concentration gradient • Needs to pump into cell • Uses energy due to being low to high

The active movement of a substance out of a cell

The active movement of a substance into a cell Two types: - Pinocytosis: “cell drinking”: entry of liquid substances - Phagocytosis: “cell eating” entry of large solid substances

• Epithelial (skin, lining of organs) • Connective (cartilage, blood cells, bone) • Muscular • Nervous

Tissue that forms the outer layer of organs

Provides support for the body and helps holds the bodys parts together

• Responds to stimuli contracting and lengthening • 3 cells, usually long and thin Three types: • Skeletal: Voluntary, striated • Cardiac: Involuntary, striated • Involuntary: Smooth, non- striated

Made up of electrons

• The total of all chemical processes that take place in the body • These chemical processes convert food you eat into energy and materials • Urine and sweat are examples of metabolic waste