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43 Cards in this Set

  • Front
  • Back

The first documented description of a microorganism was of a __________ by ____________ __________________.

Mold


Robert Hooke

__________ produced by microbial fermentation of glucose from cellulose or cornstarch is becoming a more important component of bio fuels in the United States and specialized _____________ are needed to make this commercially available product.

Ethanol


Industrial microbiologists

Microbial sterilization is used to...

Kill all microbes in or on an object

Microbes playing a role in nitrogen fixation in plants live in ____________, while those playing a role in the digestive tract of certain herbivores live in _______________.

Nodules


Rumens

The disease anthrax is caused by a pathogenic bacterium ______________, which produces heat-resistant structures known as ________________.

Bacillus anthracis


Endospores

You discovered a new coccoid shaped microorganism with no nucleus, a rigid cell wall and a diameter of 2um. Chemical tests reveal that it's cell wall does NOT contain peptidoglycan. The new microorganism is:

Most likely an Archaeon

Determine which outcome is LEAST likely for a microorganism being motile.

Transfer of plasmids to progeny

Some of the intestinal symptoms elicited by a pathogen such as Escherichia Coli (gram -) are due to the presence of

Lipopolysaccharides

A pure culture is

A population of identical cells

The science of grouping and classifying microorganisms is known as:

Microbial systematics

An organism of the genus Staphylococcus is ____________, while an organism of the genus Spirocheata is _____________.


Spherical


Coiled

A pasture flask has a(n)

Swan neck to prevent particular matter from getting into the main body of the flask

Most prokaryotic cells reside

In the oceanic and terrestrial subsurfaces

Mycobacterium tuberculosis is very difficult to stain because of the

Large amounts of a waxy lipid present in its cell wall

The process where by microorganisms are used to help clean up pollution created by human activities is known as

Bioremediation

A microbial cells membrane is considered ______________, because its internal constituents are maintained within the cell. However, it also imports and exports other molecules in response to its environment

Semipermeable

Bacteria stain as gram positive or gram negative because of the difference in their

Cell wall

The lipids in the cytoplasmic membrane of bacteria and ___________ contained yet linkages, while the cytoplasm membrane of _____________ contain ether linkages.

Eukarya


Archaea

The person who described the "wee animalcules" was

Antoni Van Leeuwenhoek

Which of the following statements is true?

Fibrial are usually shorter than flagella and enable cells to adhere to surfaces, whereas pilli are involved in genetic exchange

_____________ are chemical molecules that are partially responsible for the ____________ charge of gram-positive bacterial cell surface.

Teichoic acids


Negative

Which of the following types of microscopy could be used to visualize the layers of the cell membrane and the cell wall?

Transmission electron microscopy

Microbial ecology is the study of

Microorganisms in their natural environments

Which scientific objective is LEAST related to microbial genetics?

Identifying quorum sensing interactions among bacteria

Which of the following types of microscopy can be used with live cells?

Phase contrast microscopy

Microbial control in waste waters would most logically be a part of

Aquatic microbiology

The use of gram stain in microbiology is important because it differentiates

Bacterial cells with different types of cell walls

Aseptic technique refers to

A series of practices to avoid containment

The term run and tumble are generally associated with

Chemotaxis

Transparent double sided dishes that are used for growing microbes are most commonly called

Petri dishes

Developments in the field of immunology and medical microbiology were practical extensions of the work of...

Robert Koch

When does endospore formation commence?

When bacterial growth ceases due to limitation of an essential nutrient

___________ was the first to describe microorganisms, while __________ was the first person to see bacteria.

Robert Hooke


Antoni Va Leeuwenhoek

The production of human hormones (eg. Insulin) by genetically engineered microorganisms is an example of ______________, a sub discipline of microbiology.

Biotechnology

Which of these genera are responsible for producing spores?

Clostridium

In Gram positive bacteria, the cell walls are composed mainly of thick _____________ layers.

Peptidoglycan

All eukaryotes contain

A membrane enclosed nucleus

Electron microscopy has greater ________________ then light microscopy because the wavelength of visible light is much longer than then the wave length of electrons.

Resolution

The theory of spontaneous generation was refuted by the work of

Louis Pasture

The structure that confers structural strength on cell is known as the

Cell wall

Uni Porters

Transfers one molecule in one direction,usually with the concentration gradient

Symporters

Transfers two different now molecules in the same direction at the same time

Antiporter

Transfers two different molecules in opposite directions at the same time