BIOL-101 Lecture Notes - Lecture 3: Nuclear Membrane, Nuclear Pore, Facilitated Diffusion
6 Apr 2016
School
Department
Course
Professor
Document Summary
Sept 24/15: bacteria & archaebacteria, have no true nucleus, dna in nucleoid region, circular dna no membrane-bound organelles. Humans are linear bound dna (chromosomes: small (1-10 um, no membrane bound organelles. Smaller than eukaryotic cells: slide 3 (picture) Be careful there"s many different types of them and they do not all look like this. Need to have cytoplasm, dna/rna, and plasma membranes. All prokaryotics have cell walls, most eukaryotes don"t. Flagellums propel like a motor on a boat: slide 6: have various shapes. Bacilli (rods): e-coli that lives in our gut, e-coli disease (e=discoverer, coli=colon) Cell fractionation** (just need to know what happens) Take cells apart and separate the major organelles from each other. Centrifuge spins test tubes at various speeds. Resulting force separates cellular components by size and density. Has been used to assign various functions to the different organelles. Slide 9: j-curve: bacteria takes time to affect the body, accumulation.
