Exam 17: Microbial Symbionts

The correct order of structures ingested grass will pass through in a colonic fermenter is:

Plaque on human teeth is considered a biofilm.

Many of the rumen bacteria specialize in the breakdown of these macromolecules.

The vagina of women of child-bearing age has an acidic pH.This is due to the colonization by which organisms?

Intestinal microorganisms are important for the proper functioning of the immune system.

The most common inhabitants of the human skin are members of which phyla?

Examine this diagram showing biofilm development on the tooth surface.Biochemically and perhaps theoretically,the application of which enzyme might reduce colonization?

The type of symbiotic relationship in which one member benefits and the other member is not affected is called _________________.

When the diet of a ruminant is drastically changed from grass to a starch rich diet,the ruminant may become very ill or die because:

Some herbivorous cecal fermenters obtain additional nutrients from their food sources by this method.

An example of a rumen fermenter is the:

All microorganisms that live on or within the human body are referred to collectively as the human ________________.

The shipworm endosymbiont Teredinibacter turneri is of commercial potential because of its combined activities of::

Which genes are responsible for nitrogen fixation?

How do primary endosymbionts of insects differ from secondary endosymbionts?

The animal with the least efficient microbial intestinal fermentation system is the:

Microbes in the rumen are very efficient at converting ____________ and _________ into amino acids.

Which part of the lichen provides photosynthetic capability? (Select all that apply)

In which of the following animals would you expect to find the longest ratio of small intestine to large intestine?

Lichens DO NOT form from endosymbiotic: