BIO 3124 Lecture Notes - Lecture 5: Eukaryote, Lipoprotein, Facilitated Diffusion
15 Sep 2016
School
Department
Course
Professor
Document Summary
Slide 2: eukaryote cells range from 10-200um, size range for prokaryote is 0. 2 700um. If a cell size too big the rate of metabolism will be too slow. But if the cell size is too small the cell will not be able to hold. Dna, rna, and ribosomes, and collapse under the osmotic pressure. Epulopiscium (gram positive bacteria - give birth to live cells) have multiple copies of dna so it"s larger. Slide 3: look at the volume of a lot of cells, and compare it with e. coli which is an excellent cell to compare with, because it"s very average. Slide 4: the sa to volume ratio is inversely proportional to the size. Smaller cell has better surface area to volume ratio. Cell will work twice as hard to get the nutrients across the cell in large cells than a cell half its size. It separates cytoplasm from the environment, it is 6-
