Podcast
Questions and Answers
Which element makes up the largest percentage of the dry weight of a bacterial cell?
Which element makes up the largest percentage of the dry weight of a bacterial cell?
- Phosphorus
- Sulfur
- Carbon (correct)
- Nitrogen
What is the most abundant macromolecule in a cell?
What is the most abundant macromolecule in a cell?
- Polysaccharides
- Nucleic acids
- Proteins (correct)
- Lipids
Which element is required for the activity of several enzymes?
Which element is required for the activity of several enzymes?
- Phosphorus
- Sulfur
- Potassium (correct)
- Magnesium
Which element is commonly supplied to cells as sulfate?
Which element is commonly supplied to cells as sulfate?
Which element is present in the amino acids cysteine and methionine?
Which element is present in the amino acids cysteine and methionine?
Which element is required to stabilize ribosomes, membranes, and nucleic acids?
Which element is required to stabilize ribosomes, membranes, and nucleic acids?
Which element is an essential nutrient for marine microorganisms?
Which element is an essential nutrient for marine microorganisms?
Which elements are considered essential for living systems?
Which elements are considered essential for living systems?
What is the primary composition of a microbial cell?
What is the primary composition of a microbial cell?
What percentage of a microbial cell's dry weight is made up of proteins?
What percentage of a microbial cell's dry weight is made up of proteins?
What are macronutrients?
What are macronutrients?
What are micronutrients?
What are micronutrients?
How much does a single cell of Escherichia coli weigh approximately?
How much does a single cell of Escherichia coli weigh approximately?
How many elements are essential for microbial nutrition?
How many elements are essential for microbial nutrition?
Which metal plays a major role in cellular respiration?
Which metal plays a major role in cellular respiration?
What are trace elements also known as?
What are trace elements also known as?
What are growth factors?
What are growth factors?
Which type of culture media is prepared by adding precise amounts of pure chemicals to distilled water?
Which type of culture media is prepared by adding precise amounts of pure chemicals to distilled water?
What is the major importance of the carbon source in culture media?
What is the major importance of the carbon source in culture media?
What is the disadvantage of using complex media for culture?
What is the disadvantage of using complex media for culture?
What is the purpose of a selective medium in microbiology?
What is the purpose of a selective medium in microbiology?
Which type of medium is less demanding to prepare for the growth of L. mesenteroides?
Which type of medium is less demanding to prepare for the growth of L. mesenteroides?
Which medium listed in Table 3.2 would not support the growth of any of the organisms other than T. thioparus?
Which medium listed in Table 3.2 would not support the growth of any of the organisms other than T. thioparus?
Which organism has the greatest biosynthetic capacity among the organisms listed in Table 3.2?
Which organism has the greatest biosynthetic capacity among the organisms listed in Table 3.2?
How is sterilization of culture media typically achieved?
How is sterilization of culture media typically achieved?
What is aseptic technique used for in the microbiology laboratory?
What is aseptic technique used for in the microbiology laboratory?
What is the main method for obtaining pure cultures from liquid samples containing different organisms?
What is the main method for obtaining pure cultures from liquid samples containing different organisms?
What percentage of a microbial cell's dry weight is made up of proteins?
What percentage of a microbial cell's dry weight is made up of proteins?
Which elements are considered essential for living systems?
Which elements are considered essential for living systems?
What is the major importance of the carbon source in culture media?
What is the major importance of the carbon source in culture media?
What is aseptic technique used for in the microbiology laboratory?
What is aseptic technique used for in the microbiology laboratory?
Which element is required for the activity of several enzymes?
Which element is required for the activity of several enzymes?
What is the purpose of a selective medium in microbiology?
What is the purpose of a selective medium in microbiology?
What are growth factors?
What are growth factors?
Which element is required for the activity of several enzymes?
Which element is required for the activity of several enzymes?
What is the purpose of a selective medium in microbiology?
What is the purpose of a selective medium in microbiology?
What are growth factors?
What are growth factors?
What is the major importance of the carbon source in culture media?
What is the major importance of the carbon source in culture media?
What is the most abundant macromolecule in a cell?
What is the most abundant macromolecule in a cell?
What is aseptic technique used for in the microbiology laboratory?
What is aseptic technique used for in the microbiology laboratory?
What are micronutrients?
What are micronutrients?
Which type of culture media is considered 'simple' because it contains only a single carbon source?
Which type of culture media is considered 'simple' because it contains only a single carbon source?
Which type of media is made from digests of microbial, animal, or plant products and its nutritional composition is not known precisely?
Which type of media is made from digests of microbial, animal, or plant products and its nutritional composition is not known precisely?
Which type of media is used for the culture of nutritionally demanding microorganisms and is embellished with additional highly nutritious substances?
Which type of media is used for the culture of nutritionally demanding microorganisms and is embellished with additional highly nutritious substances?
Which type of media contains compounds that inhibit the growth of some microorganisms but not others?
Which type of media contains compounds that inhibit the growth of some microorganisms but not others?
Which type of media reveals by a color change whether a particular metabolic reaction has occurred during growth?
Which type of media reveals by a color change whether a particular metabolic reaction has occurred during growth?
What is the primary purpose of aseptic technique in the microbiology laboratory?
What is the primary purpose of aseptic technique in the microbiology laboratory?
How many essential elements are there for microbial nutrition?
How many essential elements are there for microbial nutrition?
What is the purpose of agar in solid culture media?
What is the purpose of agar in solid culture media?
What is the main method for obtaining pure cultures from liquid samples containing several different organisms?
What is the main method for obtaining pure cultures from liquid samples containing several different organisms?
What is the purpose of aseptic technique in the microbiology laboratory?
What is the purpose of aseptic technique in the microbiology laboratory?
Which element is required for the activity of several enzymes?
Which element is required for the activity of several enzymes?
What is the major importance of the carbon source in culture media?
What is the major importance of the carbon source in culture media?
Which element is present in the amino acids cysteine and methionine?
Which element is present in the amino acids cysteine and methionine?
What is the disadvantage of using complex media for culture?
What is the disadvantage of using complex media for culture?
Which type of medium is less demanding to prepare for the growth of L. mesenteroides?
Which type of medium is less demanding to prepare for the growth of L. mesenteroides?
Which organism has the greatest biosynthetic capacity among the organisms listed in Table 3.2?
Which organism has the greatest biosynthetic capacity among the organisms listed in Table 3.2?
