MICRO 06 Lect 5

MICRO 06 Lect 5 - LECTURES IN MICROBIOLOGY Microbial Nutrition and Growth LESSON 5 Sofronio Agustin Professor Lesson 5 Topics Microbial Nutrition

Info iconThis preview shows pages 1–16. Sign up to view the full content.

View Full Document Right Arrow Icon
Microbial Nutrition and Growth Sofronio Agustin Professor LECTURES IN MICROBIOLOGY LESSON 5
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Lesson 5 Topics Microbial Nutrition Environmental Factors Microbial Growth
Background image of page 2
3 Microbial Nutrition Based on intake: (a) Macronutrients (CHONPS) (b) Micronutrients (trace elements) Based on carbon content: (a) Organic nutrients - contain carbon (b) Inorganic nutrients - simple atom or molecule without carbon
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Chemical Composition Bacteria are composed of different elements and molecules, with water (70%) and proteins (15%) being the most abundant.
Background image of page 4
5 Essential Nutrients Carbon source Energy Source Growth Factors
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6 Carbon Source Autotrophs - obtain carbon from inorganic molecules like CO 2 Heterotrophs - obtain carbon from organic matter from other life forms (e.g. sugar, proteins and lipids)
Background image of page 6
7 Energy Source Photoautotrophs and photoheterotrophs obtain energy from sunlight Chemoautotrophs derive electron energy from reduced inorganic compounds Chemoheterotrophs obtain electron energy from hydrogen atoms of organic compounds
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8 Nutritional Categories Summary of different nutritional categories of microbes based energy and carbon sources
Background image of page 8
9 Methanogens Methanogens are chemoautotrophic microbes Example: methane producing Archaea
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
10 Extracellular Digestion
Background image of page 10
11 Cell Membrane Phospholipid bilayer with integral and peripheral proteins “Fluid mosaic” model - phospholipids and proteins move laterally Exhibits “selective permeability” QuickTimeᆰ and a TIFF (Uncompressed) decompressor are needed to see this picture.
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
12 Membrane Transport Passive: (a) Simple diffusion (b) Facilitated diffusion (c) Osmosis Active: (a) Permease (b) Group translocation (c) Endocytosis
Background image of page 12
13 Simple Diffusion Net movement of solute from area of high concentration to a low concentrated area No energy is expended Down the concentration gradient (like a river flowing downstream)
Background image of page 13

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
14 Diffusion A cube of sugar will diffuse from a concentrated area into a more dilute region, until an equilibrium is reached.
Background image of page 14
15 Facilitated Diffusion Transport of polar molecules and ions
Background image of page 15

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 16
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/18/2012 for the course MCB 2010C taught by Professor Sofronioagustin during the Fall '06 term at Valencia.

Page1 / 53

MICRO 06 Lect 5 - LECTURES IN MICROBIOLOGY Microbial Nutrition and Growth LESSON 5 Sofronio Agustin Professor Lesson 5 Topics Microbial Nutrition

This preview shows document pages 1 - 16. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online