Cells…. What are they??? Where are they???

Cell Drawings Blue book pg. 391 In your journal draw AND color a picture of each type of cell. Label only the following parts: Plant cellGolgi bodies* Animal cellLysosome* RER*Mitochondrion* Ribosome*Nucleolus* Cell Membrane* Chloroplast Cell wallVacuole Nucleus* * Indicates a part of both cells therefore should be on both drawings

Cell Theory All organisms are made of one or more cells The cell is the basic unit of all living things All cells come from existing cells

Levels of organization Cell ~ smallest unit of life able to perform life functions…smallest part of anything living! Tissue ~ a group of cells doing the same job. Organ ~ a group of tissues doing the same job. cell>tissue>organ>organ system>organism

Types of cells Prokaryotic Cell: (1st Major Kind of Cell) Cells that DO NOT have a defined nucleus. Example – Bacteria Eukaryotic Cell: (2nd Major Kind of Cell) Cells that have a defined nucleus. Example – Plant and Animal Cells Silly trick: (Eu (you) carry a nucleus (so do plants) Eukaryotic Cells usually are 10 times larger than Prokaryote cells.

Plant cell vs. Animal cell In general, a plant cell has a rectangular shape while an animal cell has no definite shape. Plant cells have chloroplast and cell wall….animal cells do not! Plant cells have one large vacuole….animal cells have several small ones!

Plant vs. animal Which type of cell is this? How do you know??? Plant Cell Animal cell

Organelle Tiny “organs” or structures (PARTS) inside of a cell. Each has a specific job in a cell. Like Organs are in your body… Organelles are in a cell

Cytoplasm The gel-like material inside of the cell membrane. Keeps organelles in place Supports and protects cell organelles Like jello holds fruit in place…cytoplasm holds organelles in place

Mitochondria Releases energy in the cell. (The powerhouse of the cell) Site of cellular respiration

Chloroplast Site of photosynthesis (where the plant makes its food) Organelle that produces chlorophyll. ( The chemical of photosynthesis) to power the plant cell. Only found in PLANT cells. Like a kitchen in a house.

Chlorophyll Green pigment inside the chloroplast. Traps the radiant energy, which is then used by the plant cell to make sugar for energy. Chlorophyll (inside the organelle) Chloroplast (organelle) Silly trick: chlorophyll FILLS the chloroplast

Endoplasmic reticulum (ER) Carries ribosomes Smooth w/o ribosomes Rough with embedded ribosomes Like a highway in a city

Vacuole Storage site for water, waste, and food. Plant cells have a single, large vacuole Animal cells have small vacuoles Like a cabinet in a class room

Cell membrane Controls what goes in and out of a cell It keeps some things out and lets some thing in. Maintains homeostasis (balance) Cell wall (outside) Cell membrane (inside) Like a classroom door

Cell wall Found only in PLANT cells Gives support and protection to the cell Made of cellulose Like the walls of a classroom

Nucleus Contols the activity in the cell. Contains chromosomes and the nucleolus. Like the brain…

Ribosome makes protein for the cell Travel on the ER Made in the nucleolus All the little dot things are ribosomes on the ER

Chromosome Found in nucleus Called the blueprints for the cell Contains genetic information (DNA) for the cell Set number per species (i.e. 23 pairs for human) Like the blueprints of a building..

Golgi bodies Stacks of sacs that package and ship proteins around in the cell. Like a UPS truck

Lysosome Organelle that breaks down and eats worn out cell parts….gets rid of waste in the cell It contains digestive enzymes. Like a janitor in a school