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Cells Anatomy & Physiology.

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Presentation on theme: "Cells Anatomy & Physiology."— Presentation transcript:

1 Cells Anatomy & Physiology

2 Cells vary in SIZE and STRUCTURE
Depends on what they do

3 Cell Membrane is selectively permeable
All Animal Cells have Nucleus Cytoplasm (cytosol) Cell Membrane Cell Membrane is selectively permeable

4 Lipid bilayer (phospholipids) make up the membrane with proteins embedded to help regulate what comes across the membrane

5 ORGANELLES-  "little organs" within the cell that perform specific functions
The nucleus is to the cell what the __________is to a person. The cell membrane is to a cell what the ________ is to a person. Image:  

6 Transport system; canals and channels that connect membrane to nucleus and to organelles within the cell Smooth ER (lipid synthesis) Rough ER (contains ribosomes for protein manufacture)

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8 Flattened membranes; function to package and deliver proteins produced by the ribosomes
Proteins are exported in vesicles

9 The “powerhouse” of the cell
Chemical energy from food is converted to a useable form (ATP) • process is called Cellular Respiration The “powerhouse” of the cell CRISTAE

10 Lysosomes - contain digestive enzymes to break down substances
Centrosome – forms a spindle during cell division Vesicles – packaged substances, exported Microfilaments and Microtubules - cell skeleton (cytoskeleton), maintains shape and functions in movement Cilia & Flagella

11 Directs cell activities (the “brain” of the cell)
Contains genetic information (DNA) in the form of chromatin Also contains a nucleolus – makes ribosomes Has tiny pores where RNA can exit the nucleus

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15 Diffusion - molecules tend to spread out Facilitated Diffusion
Diffusion Animation

16 Hypertonic Hypotonic Isotonic SALT SUCKS

17 Osmosis Animation

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19 Filtration Active Transport Exocytosis
Endocytosis (phagocytosis & pinocytosis)

20 Mitosis = nuclear division
Mitosis is followed by cytokinesis (cell division) The steps of mitosis ensure that each new cell has the exact same number of chromosomes as the original Interphase = growth phase, differentiation occurs

21 Interphase • Prophase • Metaphase • Anaphase • Telophase
IPMAT

22 1. chromosomes visible (chromatids)
2. centrioles migrate to the poles 3. nuclear membrane disappears 4. nucleolus disappears 5. spindle forms

23 1. chromosomes line up on the equator, spindle attaches

24 1. chromatids separate and move to opposite poles

25 1. chromosomes disappear • chromatin
2. nuclear membrane reforms 3. nucleoli reappears 4. spindle disappears 5. centrioles duplicate

26 - division of the cytoplasm to form 2 new daughter cells
- organelles are divided - daughter cells are genetically identical Cells return to interphase

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