An Association Between Two Antarctic Microorganisms Is Pictured Below

question 66

Multiple Choice

An association between two Antarctic microorganisms is pictured below. It provides an interaction that supplies ________, made by the ________, to the ________.

• A) amino acids; diatom; bacterium
• B) fixed nitrogen; diatom; bacterium
• C) fixed nitrogen; bacterium; diatom
• D) vitamin B12; diatom; bacterium
• E) vitamin B12; bacterium; diatom

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Definitions:

Relay Contact

A component in a relay that opens or closes the electrical circuit it controls, acting as the switching element triggered by the relay.

Ice-cube Relays

Small, plug-in electromechanical relays that resemble the size and shape of an ice cube, used for various control applications.

Arc Chutes

Protective devices designed to extinguish electrical arcs that can occur in switchgear or circuit breakers, by dividing and cooling the arc.

Pull-in Current

The current required to bring an electric motor up to full operational speed from a standstill.