Cells. Views of Cells Why Are Cells Small? 30 µm10 µm Surface area of one large cube = 5,400 µm 2 Total surface area of 27 small cubes = 16,200 µm 2.

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Presentation transcript:

Cells

Views of Cells

Why Are Cells Small? 30 µm10 µm Surface area of one large cube = 5,400 µm 2 Total surface area of 27 small cubes = 16,200 µm 2

Cell Types: Prokaryotic

Animal Cell

Plant Cells

Membranes Bilipid membrane Hydrophobic Hydrophilic Fluid-mosaic model Selectively permeable

Plasma Membrane

Nucleus of Cells The compartment that encloses the DNA DNA is found along fibers of chromosomes When cells are not dividing, chromosomes are unraveled

Nucleus of Cells How genes work DNA  RNA  protein Protein is the gene product (function)

The Endomembrane System The system is a collection of membranous organelles These organelles manufacture and distribute cell products The endomembrane system divides the cell into compartments

Overview of System

Endoplasmic Reticulum Rough ER Ribosomes Protein synthesis within vacuoles Plasma membrane repair Smooth ER No ribosomes Lipid synthesis Detoxification

Rough ER Secretory Proteins

The Golgi Apparatus

Lysosomes & Vacuoles

Cytoskeleton Skeleton of cells: shape, size, movement, attachment

Cilia and Flagella

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