Microbial Growth and Nutritional Requirements Quiz

Microbes can be anaerobic and do not require oxygen for growth.

Halophiles are organisms that thrive in high salt concentrations.

Incubation is the process of maintaining a controlled environment for microbial growth, not sterilization.

Facultative anaerobes can grow with or without oxygen.

Serial dilution and viable plate count involve diluting a sample and counting the number of colonies formed on agar plates to estimate the number of viable cells.

Most bacteria grow optimally in a slightly acidic to neutral pH range.

Obligate anaerobes cannot survive in the presence of oxygen.

Psychrophiles thrive in cold environments.

Binary fission is the primary method of bacterial reproduction.

Vitamins are essential micronutrients required by microorganisms for growth and metabolism.

Gram staining is a technique for classifying bacteria based on their cell wall structure, not for measuring growth.

Chemoheterotrophs obtain energy and carbon from organic molecules.

Fastidious organisms have complex nutritional requirements and are difficult to culture.

Autotrophic organisms can produce their own food from inorganic sources like carbon dioxide.

Photoautotrophs use light energy to convert carbon dioxide into organic compounds for growth and energy.