Cell Organelles
Objectives Define the term organelle. List organelles found in living cells Identify the important roles organelles play within a cell. Compare and contrast animal and plant cells. Label organelles in plant and animal cells.
nucleus cytoplasm nucleolus
Organelles Specialized structures within a living cell Parts of the cell that act like specialized “organs”
1.Cell Membrane Description: outer layer of the cell Mainly composed of lipids & proteins Lipid bi-layer & embedded proteins Function: regulates what enters and leaves the cell
2.Cytoplasm Description: fluid like substance that fills the area of the cell outside the nucleus Function: site of many cellular activities; surrounds organelles
3.Nucleus Function: control all activities of the cell (acts like a brain) Chromatin = coiled up DNA in nucleus Nuclear Envelope = surrounds and protests the nucleus Nucleolus = dark spot in the middle of the nucleus that helps make ribosomes
nucleus cytoplasm nucleolus
4.Ribosomes Description: Particles made up of RNA & proteins. Found either: Free in the cytoplasm Attached to other organelles. Function: make proteins
ribosomes nucleus cytoplasm nucleolus
Eukaryotic Cell Organelles and Function Endoplasmic Reticulum (ER) Nickname: “Roads” Function: The internal delivery system of the cell (main transport system of the cell).
Endoplasmic Reticulum 2 Types: Rough ER: Rough appearance because it has ribosomes Function: helps make proteins, that’s why it has ribosomes Smooth ER: NO ribosomes Function: makes fats or lipids
ribosomes Smooth ER Rough ER cytoplasm nucleolus nucleus
Eukaryotic Cell Organelles and Function Golgi body: Function: packages, modifies, and transports materials to different location inside/outside of the cell Appearance: stack of pancakes
ribosomes Smooth ER Rough ER nucleus cytoplasm nucleolus Golgi apparatus
6.Lysosomes Description: small sacs of digestive enzymes Function: breakdown macromolecules & digest old organelles (“clean up crew or janitors”)
lysosome ribosomes Smooth ER Rough ER nucleus cytoplasm nucleolus Golgi apparatus
Don’t Forget: Summary Add a horizontal line to the bottom of you cornell notes Tonight: write a 3-5 complete sentence summary of our lecture today
AVID Thinking Strategy: Tattoo or Body Art You are in charge of developing a tattoo to allow the world to know about one of the discussed organelles. 1. The centerpiece of the tattoo must be a slogan representing the organelle. 2. The surrounding artwork (minimum of 3 colors) must represent the organelle’s function 3. The artwork must be suitable for all ages and appropriate for viewing in all social situations. 4. 5-7 complete sentence explanation of how the artwork represents the organelle AND the best location for the tattoo on the body
Objectives Define the term organelle. List organelles found in living cells Identify the important roles organelles play within a cell. Compare and contrast animal and plant cells. Label organelles in plant and animal cells.
7.Vacuoles Function: stores water (storage) Very large in plant Small in animal cells When there is no water, the plant wilts
lysosome ribosomes Smooth ER Rough ER nucleus cytoplasm nucleolus vacuole Golgi apparatus
8.Mitochondria Description: large organelle with folded internal membranes Has 2 membranes Contains own DNA Function: makes energy for the cell
lysosome ribosomes Smooth ER Rough ER nucleus cytoplasm nucleolus vacuole Golgi apparatus mitochondria
9.Chloroplast Function: site of photosynthesis Traps energy from the sun Converts energy to chemical energy Only occur in plant cells Contains own DNA
lysosome ribosomes chloroplast Smooth ER Rough ER nucleus cytoplasm nucleolus vacuole Golgi apparatus mitochondria
10.Cytoskeleton Description: jelly like rectangle that contains thread-like microtubles Function: support structure & transportation system of cell
lysosome ribosomes chloroplast Smooth ER Rough ER nucleus cytoplasm nucleolus cytoskeleton vacuole Golgi apparatus mitochondria
11.Centrioles Description: rod shaped bodies near the nucleus Function: help separate chromosomes during cell division (mitosis)
lysosome ribosomes chloroplast Smooth ER Rough ER nucleus cytoplasm nucleolus centrioles cytoskeleton vacuole Golgi apparatus mitochondria
lysosome ribosomes chloroplast Smooth ER Rough ER nucleus cytoplasm nucleolus Cell membrane cytoskeleton vacuole Golgi apparatus mitochondria
13.Cell Wall Description: fairly rigid layer that surrounds the outside of the cell membrane Found only around plant cells Give plant cells square shape Function: provides structure, support & protect for cell
Don’t Forget: Summary Add a horizontal line to the bottom of you cornell notes Tonight: write a 3-5 complete sentence summary of our lecture today
AVId Thinking Strategy: Toy Design Apply your knowledge of organelles to design the best selling toy of the season. It must be able to fit into a standard backpack & not cause serious bodily injury as part of normal use. What is the name of the toy? What age group is the toy designed to reach? Make an illustration of the toy(minimum of 3 colors). Use 3-4 complete sentences to describe how the toy employs on of the organelle’s functions. List the most fun feature(s) of the toy.
Objectives Compare and contrast animal and plant cells. Define the term organelle. List organelles found in living cells Identify the important roles organelles play within a cell. Compare and contrast animal and plant cells. Label organelles in plant and animal cells.
What is the difference? Plant vs Animal cells Plant Cells Animal Cells Square shaped Round shaped Contain large vacuoles Contain small vacuoles Surrounded by cell wall No cell wall Contain chloroplasts No chloroplasts
What is the SAme? Plant vs Animal cells Plant Cells & Animal Cells
Quiz Tomorrow In Class Today: Tonight: Complete animal & plant cell handouts Color in and label organelles on cell drawings Tonight: Review labeled handouts for plant and animal cells Review functions of organelles
Thinking Strategy #21: Diamante Poem This poem follows a very specific pattern. There are 7 lines that will make the shape of a diamond. Draw the following diamond on the next blank page in your notebook.
Thinking Strategy #21: Diamante Poem This poem follows a very specific pattern. There are 7 lines that will make the shape of a diamond. Line 1: topic (noun 1) Line 2: 2 describing words for noun 1 (adjectives) Line 3: Three action words (“-ing”) for noun 1 Line 4: 4 words. 2 words about the topic & 2 words opposite to those in line 2. Line 5: 3 action words for the ending noun 2. Line 6: 2 words to describe noun 2. Line 7: Ending noun 2. (opposite of line 1)