Can a culture change?
Besides local invention, cultures can also change through cultural diffusion. Cultural diffusion is the spread of ideas, beliefs, and goods from one place to another. When people from one culture interact with people from another, aspects of culture tend to spread from one place to another.
What are the 3 types of culture media based on consistency?
Based on consistency culture media is classified as liquid, semi-solid and solid media.
How does culture form and change?
Culture is made up of customs, attitudes, and beliefs that are unique to each group of people. Cultural change can also occur through diffusion, when contact with other cultures and ideas are transferred. This is occurring more in the world today as communication, travel, and the Internet are creating a global society.
Which media is used for isolation of bacteria?
Agar is used as the gelling agent to which is added a variety of nutrients (e.g. blood, peptone and sugars) and other factors (e.g. buffers, salts and indicators). Some culture media are nonselective (e.g. blood agar, nutrient agar) and these will grow a wide variety of bacteria.
How bacteria can be differentiated by utilizing the types of culture media?
Certain media are designed in such a way that different bacteria can be recognized on the basis of their colony color. Various approaches include incorporation of dyes, metabolic substrates, etc, so that those bacteria that utilize them appear as differently colored colonies.
What forms of media are used to culture bacteria?
The most common growth media for microorganisms are nutrient broths and agar plates; specialized media are sometimes required for microorganism and cell culture growth. Some organisms, termed fastidious organisms, require specialized environments due to complex nutritional requirements.
What is the main component of culture media?
1 Nutrients: proteins/peptides/amino-acids. 2 Energy: carbohydrates. 3 Essential metals and minerals: calcium, magnesium, iron, trace metals: phosphates, sulphates etc. 4 Buffering agents: phosphates, acetates etc.
What are the common ingredients of culture media?
Some of the ingredients of culture media include water, agar, peptone, casein hydrolysate, meat extract, yeast extract and malt extract. Classification: Bacterial culture media can be classified in at least three ways; Based on consistency, based on nutritional component and based on its functional use.