Cells and Life Cycles What Are Cells Cells

What Are Cells? • • • Cells are the smallest living things Bacteria are

Animal Cells • 1. 2. 3. All animal cells have 3 parts: The nucleus

Plant Cells • 1. 2. 3. 4. All plant cells have six parts; The

Specialized Animal Cells • We are multi-cellular so we need specialized cells Red blood

Specialized Animal Cells • Eggs cells are large, with lots of cytoplasm for food

Specialized Plant Cells • Root Hair cells have a large surface area to absorb

Cells, Tissues, Organs • We are so large that we need lots of cells

Examples Of Organs • The Heart is made up of heart cells and tissue

Systems • The organs work together in systems • The circulatory system sends blood

Systems • The Nervous System • Is made up of nerves, muscles, the spinal

Questions • What are these cells; A= Red Blood Cells B= A Nerve Cell

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Cells and Life Cycles

What Are Cells? • • • Cells are the smallest living things Bacteria are made of single cells They can reproduce very quickly We are made of millions of cells These include; red and white blood cells, nerve cells, skin cells hair cells

Animal Cells • 1. 2. 3. All animal cells have 3 parts: The nucleus (controls the cell) Cell Membrane (a skin around the cell) The Cytoplasm (everything else inside the cell)

Plant Cells • 1. 2. 3. 4. All plant cells have six parts; The nucleus, cell membrane and cytoplasm The cell wall (protects the cell) Chloroplasts (for photosynthesis) The Vacuole (stores water)

Specialized Animal Cells • We are multi-cellular so we need specialized cells Red blood cells • Red Blood cells have no nucleus and a large surface area to pack in Oxygen • Nerve Cells are long, Nerve cell with connections at either End to pass on electrical impulses

Specialized Animal Cells • Eggs cells are large, with lots of cytoplasm for food • Sperm Cells have a tail that allows them to swim

Specialized Plant Cells • Root Hair cells have a large surface area to absorb lots of water • Leaf Cells have a large surface area to absorb sunlight • They have chloroplasts to photosynthesize

Cells, Tissues, Organs • We are so large that we need lots of cells dedicated to getting Oxygen into us • Lungs cells are specialized and work with other lung cells to pass Oxygen to Red Blood Cells • A collection of lung cells make up lung tissue • The whole lung is an organ

Examples Of Organs • The Heart is made up of heart cells and tissue • The Lungs are organs • The Brain • The Stomach • Skin • In plants the leaf and roots are organs

Systems • The organs work together in systems • The circulatory system sends blood around the body • It includes the heart, arteries, veins and capillaries • The respiratory system passes gases to the blood • This includes the lungs, red blood cells and blood vessels

Systems • The Nervous System • Is made up of nerves, muscles, the spinal cord and brain • The Digestive System • Is made up of the mouth, teeth, food pipe (oesophagus), stomach, small intestine • The Reproductive System

Questions • What are these cells; A= Red Blood Cells B= A Nerve Cell C= A Sperm Cell D= A Root Cell

Fly Life Cycle Maggots