BIOLOGY 251 Lecture Notes - Lecture 2: Tay–Sachs Disease, Brossard, Oxidative Phosphorylation
Document Summary
Positive feedback: a variable causes the release of more of the variable: not related to homeostasis, oxytocin, contractions, and prostaglandins. Mr. and mrs. brossard from breaux bridge, la bring their 6 month old baby to you. Symptoms: red spot on retina, suddenly seems to have trouble hearing, is not moving like he used to. Oxidative damage: free oxygen radicals (o2, dangerous and damages cell membranes, proteins, and dna, anti-oxidants eliminate most of them, most likely proximal cause of aging and many diseases. Cell membrane (plasma membrane): mechanical boundary of the cell: selectively permeable, icf on the inside, ecf on the outside. Cytoplasm: everything inside the cell that isn"t the nucleus: organelles: membrane bound structures that have a specific function. Endoplasmic reticulum (er: rough endoplasmic reticulum (rer): synthesize and release proteins, contains ribosomes, smooth endoplasmic reticulum (ser): package and transport system for proteins created in the rer.
