human eye, no microscope

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Presentation transcript:

human eye, no microscope light microscopes hummingbirds humans frog eggs 1 mm 1 cm 0.1 m 1 m 10 m 100 m redwoods Do not post to Internet

most animal cells and plant cells mitochondria, chloroplasts light microscopes electron microscopes lipids bacteriophages most animal cells and plant cells mitochondria, chloroplasts small molecules most bacteria proteins 0.1 nm 1 nm 10 nm 100 nm 1 µm 10 µm 100 µm 1 mm

Impacts, Issues Do not post to Internet

In-text Figure Page 51 Do not post to Internet Rickettsia prowazekii

Bacterial cell (prokaryotic) DNA cytoplasm plasma membrane

Animal cell (eukaryotic) DNA in nucleus cytoplasm plasma membrane

Plant cell (eukaryotic) DNA in nucleus cytoplasm plasma membrane

Cytoskeleton

0.5 1.0 1.5 0.79 0.06 3.14 7.07 0.52 1.77 Diameter (cm): Surface area (cm2): Volume (cm3): Surface- to-volume ratio: 13.17:1 6.04:1 3.99:1

Cells are Factories

Nucleus: Cytoskeleton: nuclear envelope nucleolus DNA in nucleoplasm microtubules microfilaments intermediate filaments rough ER mitochondrion centrioles smooth ER Golgi body plasma membrane lysosome

lipid bilayer fluid one layer of lipids

Fluid Mosaic Model

adhesion protein communication protein

receptor protein recognition protein passive transporter active transporters

Transport Proteins

Nucleus

DNA infolding of plasma membrane

Figure 3.9a-c Page 46 pore chromatin nucleolus nuclear envelope (two lipid bilayers) cytoplasm ribosome vesicle Do not post to Internet

smooth ER channel, cross-section budding vesicle plasma membrane

Golgi and ER

repeated foldings of inner membrane (cristae) outer compartment inner compartment outer membrane inner membrane

Figure 3.10(2) Page 48 Do not post to Internet

Nucleus: Cytoskeleton: cell wall chloroplast central vacuole nuclear envelope Cytoskeleton: nucleolus DNA in nucleoplasm microtubules microfilaments rough ER mitochondrion plasmodesma smooth ER Golgi body plasma membrane lysosome-like vesicle

two outer membranes stroma thylakoids

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