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Untitled Prezi

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by

Kenken Lachica

on 6 May 2013

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Objectives What is a cell? Cellular Structures
and Functions Results The Cell Theory 1) Cells are the basic units of life.

2) All living things are made up of cells.

3) All cells arise from pre-existing cells. o to introduce and describe general cell structure and functions;

o to determine the differences between prokaryotic and eukaryotic cells; and A cell is the smallest unit that can carry out activities associated with life. Cell Structure and Function 1) Observe the slides containing:
a. bacteria
b. animal cells
c. plant cells

2) Note their similarities and differences. Drawing is highly encouraged. Prokaryotic cells Plasma Membrane - phospholipid bilayer
- semi-permeable cell membrane o to gain appreciation of the underlying unity of all living things through cells Maria Kenosis Emmanuelle G. Lachica
06 May 2013 Ms. KEN Nucleus Endoplasmic Reticulum Golgi Apparatus Mitochondria Chloroplasts Organelles - specialized cellular organs
- found in the cytoplasm of the cell - spherical / oval in shape enclosed by a nuclear membrane / envelope
- contains the: (1) nucleolus and (2) chromosomes (DNA) DNA or deoxyribonucleic acid is the cell's blueprints that controls cell structure and activity. - sac-like structures that extend from the nucleus to the cytoplasm
- may be: (1) smooth (tubular) or (2) rough (flat)
- manufacture proteins and lipids and function in drug detoxification Ribosomes - enzyme-containing structures that form proteins
- may be (1) attached to the RER or (2) free in the cytoplasm Cytoskeleton - network of protein fibers that give cells mechanical strength, shape, and the ability to move
- may be (1) microtubules, (2) microfilaments, and (3) intermediate filaments - appear as stacks of flattened sacs (cisternae)
- process, sort, and modify proteins from the RER Lysosomes Peroxisomes - double membraned-sacs that enclose an intermembrane space and a matrix
- site of energy transformation via cellular respiration - sacs in animal cells with enzymes that break down ingested materials,wastes, and dysfunctional proteins - sacs that have enzymes that transport H to O2, producting H2O2 (hydrogen peroxide)
- for break down of fatty acid molecules Vacuoles - double-membraned sacs enclosing the stroma and internal thylakoids
- sites of photosynthesis - sacs in plants, fungi, and algae
- store materials, wastes, water, and maintain hydrostatic pressure Activity 1: Pair Me Up Activity 2: Compound Light Microscopy Nucleus | Mitochondrion | Endoplasmic Reticulum
Golgi Apparatus | Lysosomes | Plasma Membrane Anton van Leeuwenhoek Eukaryotic cells - 'before the nucleus'
- examples are bacteria and archaea
- DNA is located in a nuclear area or nucleoid, not a nucleus
- most have cell walls outside the plasma membrane - have highly organized membrane-enclosed organelles
- with a defined nucleus with DNA
- Plants: have chloroplasts, cell wall, large vacuole Matthias Schleiden, Theodor Schwann, and Rudolf Virchow
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