Chapter 6 Microbial growth and metabolism Microbial nutrition Microbial growth Metabolism
Chapter 6 Microbial Growth and Metabolism • Microbial Nutrition • Microbial Growth • Metabolism
6-1. Microbial nutrition Outline. Nutrient requirements Nutritional types of microorganisms Uptake of Nutrients by the cell Culture medium Isolation of pure cultures
6 – 1. Microbial Nutrition • Nutrient requirements • Nutritional types of microorganisms • Uptake of Nutrients by the Cell • Culture Medium • Isolation of Pure Cultures Outline:
Concepts: Microorganisms require about ten elements in large quantities, because they are used to construct carbohydrates, lipids, proteins, and nucleic acids. Several other elements are needed in very small amounts and are parts of enzymes and cofactors
Microorganisms require about ten elements in large quantities, because they are used to construct carbohydrates, lipids, proteins, and nucleic acids. Several other elements are needed in very small amounts and are parts of enzymes and cofactors. Concepts: Nutrient requirements
Macronutrients 95% or more of cell dry weight is made up of a few major elements: carbon, oxygen, hydrogen, nitrogen, sulfur, phosphorus, potassium, calcium. magnesium and iron The first six(C, H,O, N, P and s)are components of carbonhadrates, lipids, proteins and nucleic acids
Macronutrients • 95% or more of cell dry weight is made up of a few major elements: carbon, oxygen, hydrogen, nitrogen, sulfur, phosphorus, potassium, calcium, magnesium and iron. • The first six ( C, H, O, N, P and S) are components of carbonhadrates, lipids, proteins and nucleic acids
Trace elements Microbes require very small amounts of other mineral elements, such as iron, copper, molybdenum, and zinc; these are referred to as trace elements most are essential for activity of certain enzymes, usually as cofactors
Trace Elements Microbes require very small amounts of other mineral elements, such as iron, copper, molybdenum, and zinc; these are referred to as trace elements. Most are essential for activity of certain enzymes, usually as cofactors