Microbial Growth Patterns and Requirements
These microbes grow best at moderate temperatures (20 - 40 degrees C) and can often thrive at the human body temperature.
What are mesophiles?
This type of media contains substances that inhibit some microbes while allowing others to grow.
What is selective media?
This enzyme unwinds the DNA double helix.
What is helicase?
Eukaryotic microbes that can grow as yeast or mold depending on the conditions are known as this.
What are dimorphic fungi?
This is the protein coat that surrounds the viral genome.
What is a capsid?
These microbes cannot survive in the presence of oxygen.
What are obligate anaerobes?
This technique is used to separate individual bacterial cells on agar for colony isolation.
What is the streak plate method?
This is the enzyme responsible for transcription.
What is RNA polymerase?
The feeding and growing stage of a protozoan is known as this.
What is the trophozoite stage?
These are infectious agents lacking a protein coat and composed only of RNA.
What are viroids?
These are microbes that prefer alkaline conditions like soda lakes.
What are alkaliphiles?
This heat method reduces microbial load in milk without sterilizing it.
What is pasteurization?
The codon AUG signals this.
What is the translation start?
These organisms often have complex life cycles involving intermediate and definitive hosts.
What are helminths?
This is the enzyme that retroviruses used to copy RNA into DNA.
What is reverse transcriptase?
Bacteria that can cause infections in humans usually fall into this nutritional category.
What are chemoheterotrophs?
These chemical agents are used to kill microbes on living tissue.
What are antiseptics?
This small circular piece of DNA can carry antibiotic resistance genes along with other nonessential genes.
What is a plasmid?
These are the eukaryotic microorganisms that carry out photosynthesis.
What are algae?
The VZV virus that causes chicken pox and can reactivate later on as shingles is an example of this type of viral infection.
What is a latent viral infection?
This is the growth curve phase where cell death and growth are equal.
What is stationary phase?
The complete removal or destruction of all microbial life is known as this.
What is sterilization?
Mutations that lead to an insertion or deletion of nucleotides are known as this.
What are frameshift mutations?
What are fungi?
Mad Cow Disease is an example of an infection caused by these.
What are prions?