Biology Notes - Biology Start with 1 molecule of glucose (3...

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Egg Meiosis 2 Meiosis 1 Biology Start with 1 molecule of glucose (3 ATP per NADH – 2 ATP per FADH 2 ) Glycolysis : net 2 ATP 2 ATP 2 NADH 6-2= 4 ATP 2 pyruvate 2 acetyl-coA 2 NADH 6 ATP Krebs Cycle 6 NADH 18 ATP 2 FADH 2 4 ATP 2 ATP 2 ATP Grand Total: 36 ATP Anaerobic Metabolism No oxygen to regenerate NAD+ o NAD+ needed in glycolysis Fermentation pathway comes to the rescue! Yields – 2 ATP per glucose (compared to 36 with aerobic respiration) Extra 21 Down’s Syndrome
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Cell Cycle – 5 Phases “Interphase” = Gap 1 Gap 2 G1 – normal metabolic activities May be short (fetal cells, cells lining stomach) May continue indefinitely (nerve cells) Synthesis – S phase DNA is replicated G2 – similar to gap 1 Organelles replicate, chromosomes being to condense Spindle fiber proteins produced M – Mitosis – 5 stages o Prophase Chromosomes continue to condense until they are visible under a light microscope Nuclear envelope breaks down Spindle fibers assemble Emanate from centrioles (in animal cells) Picture of the chromosomes all over o Prometaphase Spindle fibers attach to centromeres via a kinetochore
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This note was uploaded on 04/09/2008 for the course BIOL 111 taught by Professor Reimer during the Spring '08 term at St. Francis PA.

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Biology Notes - Biology Start with 1 molecule of glucose (3...

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