MCDB 1A Lecture 4: MCDB 1A-Smith lectures
7 Nov 2018
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Identify: antibodies, large protein molecules, product of immune system, each antibody type recognize a specific molecule called an epitope, can be used as research tools to label specific molecules. Life"s 3 do(cid:373)ai(cid:374)s: 2 domains do not have nuclei. Prokaryotes: bacterial structures are comprised of macromolecules. Prokaryote structure 2: bacterial flagella: many bacteria swim using flagella, different ones have different numbers of flagella, rotor-like protein complex, spin, counterclockwise: forward, clockwise: tumbling, flagellar rotation is work, requires energy. Prokaryote structure 3: bacterial pili: many employ pili, short hollow tread-like structures, adhere to one another, adhere to surfaces, bridges two bacteria, bacterial conjugation, bacterial sex, transfer dna that encodes useful structural elements. Inner membrane is folded inward to produce shelf-like structures called cristae that creates a large surface area-contains atp synthesizing enzyme, a larger surface area leads to greater atp production. Insulin discovered by banting and best, miracle drug for diabetes: vesicles/lysosome lysosomes, peroxisomes, secretory vesicles that move to cell surface.
