Gen Micro CH26&27 SG (Altura)

What are some of the reasons why bacteria might not grow in culture?

Unsuitable nutrients, unknown growth factors, dormant state, or strict environmental requirements.

What is fluorescent in situ hybridization (FISH)?

A technique using fluorescent probes to detect specific DNA or RNA sequences in cells.

What is Most Probable Number (MPN) used for?

Estimating the concentration of viable microorganisms in a liquid sample.

What is symbiosis?

A close and long-term biological interaction between two different organisms.

What is it called when different organisms try to acquire the same resources?

Competition.

What is mutualism?

A symbiotic relationship where both participating species benefit.

What is syntrophy?

A phenomenon where one organism lives off the metabolic products of another.

What is parasitism?

A relationship where one organism benefits at the expense of the host.

What is the difference between contact-dependent and contact-independent growth inhibition?

Contact-dependent requires physical cell contact; contact-independent uses secreted inhibitory factors.

What factors does a pathogen have to balance during infection?

Virulence, host defense evasion, replication rate, and transmission efficiency.

What is the definition of cooperation?

An interaction where organisms act together for mutual benefit without obligatory dependence.