Temperature
Tantrums
Tantrums
What are Psychrophiles?
These organisms thrive in cold environments, with optimal growth temperatures around 15 degrees or lower.
What is an Obligate Aerobe?
This type of organism requires oxygen to survive.
What are neutrophiles?
Most pathogenic bacteria are considered these, thriving in a narrow pH range of 6.5–7.5.
What is the Lag Phase?
This first phase is when bacteria adapt to their new environment and do not increase in number.
What is enriched or complex media?
This type of media contains complex ingredients like blood or yeast extract, designed to grow as many microbes as possible.
What are Mesophiles?
These bacteria are the most common, loving moderate temperatures, including human body temperature.
What is an Obligate Anaerobe?
This type of organism is killed by atmospheric oxygen.
What are acidophiles?
This term refers to microbes that grow best in acidic environments below pH 5.5.
What is the Log Phase?
This phase is characterized by exponential, rapid growth and reproduction.
What is selective media?
These media are designed to suppress the growth of unwanted bacteria and encourage the growth of desired microbes.
What are Thermophiles?
Microbes that thrive in high-temperature environments, such as hot springs.
What is a Facultative Anaerobe?
These organisms use oxygen when it is present but can grow without it using fermentation.
What are halophiles?
Microbes that require high salt concentrations (above 3%) to survive are called these.
What is the Stationary Phase?
Growth slows down during this phase because nutrients are depleted or toxic wastes accumulate.
What is MSA?
This type of agar, used for Staphylococcus, is both selective and differential.
What are Hyperthermophiles?
These extreme heat lovers can grow at temperatures above 80 degrees.
What is a Microaerophile?
These organisms need oxygen but can only tolerate it in low concentrations.
What is plasmolysis?
This process occurs when a cell loses water in a hypertonic environment, causing the plasma membrane to shrink.
What is the Death Phase?
In this final phase, the number of dying cells exceeds the number of new cells produced.
What is streak plate?
This technique is used to dilute bacteria across a plate to obtain isolated colonies.
What is a Psychrotroph?
An organism that can grow in the cold but prefers moderate temperatures.
What is an Aerotolerant Anaerobe?
These organisms do not use oxygen, but they are not harmed by it.
What are halotolerant organisms?
Microbes that prefer high salt but can tolerate low salt environments.
What is Generation Time?
The time it takes for a population to double during the log phase is known as this.
What is differential media?
This specialized medium allows for distinguishing between different microbes based on their metabolic properties, such as lactose fermentation.