Cells. Views of Cells Why Are Cells Small? 30 µm10 µm Surface area of one large cube = 5,400 µm 2...

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Transcript of Cells. Views of Cells Why Are Cells Small? 30 µm10 µm Surface area of one large cube = 5,400 µm 2...

Page 1: 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.

Cells

Page 2: 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.

Views of Cells

Page 3: 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.

Why Are Cells Small?

30 µm 10 µm

Surface areaof one large cube= 5,400 µm2

Total surface areaof 27 small cubes= 16,200 µm2

Page 4: 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

Page 5: 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.

Animal Cell

Page 6: 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.

Plant Cells

Page 7: 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.

MembranesBilipid membrane

Hydrophobic

Hydrophilic

Fluid-mosaic model

Selectively permeable

Page 8: 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.

Plasma Membrane

Page 9: 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.

Nucleus of Cells

The compartment that encloses the DNA DNA is found along

fibers of chromosomes

When cells are not dividing, chromosomes are unraveled

Page 10: 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.

Nucleus of Cells

How genes work

DNA RNA protein

Protein is the gene product (function)

Page 11: 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.

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

Page 12: 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.

Overview of System

Page 13: 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.

Endoplasmic Reticulum

Rough ER Ribosomes Protein synthesis

within vacuoles Plasma membrane

repair

Smooth ER No ribosomes Lipid synthesis Detoxification

Page 14: 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.

Rough ER Secretory Proteins

Page 15: 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.

The Golgi Apparatus

Page 16: 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.

Lysosomes & Vacuoles

Page 17: 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.

Lysosomes & Vacuoles

Page 18: 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.
Page 19: 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.
Page 20: 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.

Cytoskeleton

Skeleton of cells: shape, size, movement, attachment

Page 21: 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.

Cilia and Flagella


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Cells 1. Cells are small. There are 100 trillion cells in the body. They range in size from 7.5 µm = micrometers (micrometer is 1 millionth of a.

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Enormous variety in the size and shape of different cells Smallest cells belong to group of organisms Mycoplasma Only about 0.2 µm in diameter.

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