Bellwork  What is one similarity between prokaryotic and eukaryotic cells? 1

2 The Organelles!

3 Cell Membrane Description: Has 2 layers of MOLECULES and is known as a phospholipid bilayer. Proteins are stuck inside the membrane. Each phospholipid has a HYDROPHOBIC (water fearing) and HYDROPHILIC (water loving) end.

4 CELL MEMBRANE Functions:  holds the cell together, keeps all of the pieces (the organelles) inside the cell  controls what goes in and out of the cell  Found in animal and plant cells

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CYTOSKELETON  Functions include: movement of material through the cell maintaining the shape of the cell keeping the cell from getting smashed Found in animal cells only 6

Cell Wall  Function: Barrier that provides support and protects plant cells  Found in plants 7

8 Nucleus  Description: large, round organelle in the center of the cell. Chromosomes are found inside.  Functions:  “brain” of the cell, controls all of the cellular activities  DNA inside-carries genetic info. for maintenance, function, and replication  Found in animal and plant cells

9 CHROMOSOMES- carry the information that determines what traits a living thing will have are found inside the nucleus Nucleus

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11 Function: they help to form the fibers that move chromosomes around when the cell is dividing generally appear in animal cells Centrioles:

12 NUCLEOLUS  Description: dark area in the nucleus  Function: Contains RNA for protein manufacturing  Found in plant and animal cells

Rough Endoplasmic Reticulum (ER)  Description: Tubular with ribosomes on it (looks spotted)  Function: to make membranes and proteins  Found in animal and plant cells 13

14 Smooth ER  Function-collect, maintain & transport things. Creates steroids (lipids), and stores ions for the cell to keep nutrients balanced  Description: Shaped slightly tubular Found in animal and plant cells

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16 Description: small dot-like structures in cells. Made up of proteins and RNA. Two types: floating and attached. Function: site of protein synthesis in cells (makes proteins). Made in the nucleus. Floating make proteins for the cytoplasm, attached make proteins used in rough ER. Found in animal and plant cells Ribosomes

GOLGI APPARATUS 1) Functions: It takes simple molecules and combines them to make larger molecules. It modifies, sorts and packages molecules Description: It’s made up of a stack of flattened out sacs Found in animal and plant cells

18 Golgi apparatus

19 Mitochondria Description: OUTER MEMBRANE: covers mitochondria INNER MEMBRANE: folds many times to increase the surface area-more space it has, the more energy it creates.

20 Description: MATRIX: a fluid that has water and proteins mixed together

21 MitochondriaMitochondria  Functions: The Power-House of the cell (makes ATP). They break down food molecules so the cell has the energy  Found in both animal and plant cells

LYSOSOMES (primarily animal) Smaller molecules are released; get absorbed by the mitochondria 22 Functions: The enzymes in the lysosome bond to food & digest it. It breaks down organelles that don’t work or are damaged, and can destroy the cell if it breaks open.

LYSOSOMES 23

VACUOLE: STORAGE IN PLANT CELLS Functions: Vacuoles in plants support structure, stores waste, water and food. Storing waste products protects the cell from contamination  When there is no water, the vacuole shrinks.  Found in animal and plant cells-more important to plant than animal cells 24

25 Chloroplast

26 Description: disk-like structures, and are composed of a single membrane Found only in plant cells Chloroplast

27 Chloroplast Function: photosynthesis takes place inside the chloroplast: the process in it captures sunlight, water, carbon dioxide to make sugar (food)

28 **The vesicle can move to the Golgi apparatus or the cell membrane 1)If the vesicle floats to the cell membrane, the proteins are going to be sent out of the cell……or (exocytosis) 2)If they move to the Golgi Apparatus, the proteins will be used inside the cell MOVEMENT of VESICLES

Flagella  Has a tail-like structure  Aids in locomotion and feeding  Found in some animal cells, prokaryotes and plant cells 29

Cilia  Used to sweep substances across surfaces  Hair-like projections  Found in some animal cells, protist cells, and prokaryotes 30

31 The release of intracellular molecules (hormones or proteins) EXOCYTOSIS-

32 Turgor Pressure- force exerted by the water entering (osmosis) the vacuole, which then swells exerting internal force on the cell wall