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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:
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