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82 Cards in this Set

  • Front
  • Back

Disease causing micro-organisms are called


The microorganisms that recycle nutrients by breaking down dead matter and wastes


microorganisms that do not have a nucleus in their cell


When humans manipulate the genes of microorganisms the process is called

Genetic engineering

Which of the following is not considered microorganisms

Organisms that canbe seen with the naked eye

All organisms are best defined as organisms that

Are too small to be seen with the unaided eye

Which of the following is a unique characteristic of viruses that distinguishes them from the other major groups of microorganisms

Lack of cell structure

The Dutch Merchant who made and used quality magnifying lenses to see record microorganisms

Antonie van Leewenhoek

Pasture use swan neck flask in his experiments to prove that

There are microbes in the air and living things do not arise from none living things

What is not a process in the scientific method

belief in perceived ideas

Spontaneous generation is the belief that

Living things can arise from nonliving things

Koch's postulates are criteria used to establish

The causative agent of an infectious disease

Which of the following is a taxon that contains all other taxa


The smallest and most significant taxon


A scientist discovers a new microbial species it is a single-celled eukaryote without cell walls in which kingdom will it likely be classified



Parasitic worms

Organisms called parasites are

Always harmful to their host

The surgeon who advocated using disinfectants on hands and in the air prior to surgery

Joseph Lister

Scientist that showed anthrax is caused by the bacterium Bacillus anthracis

Robert Koch

Select the correct descending taxonomic hierarchy

Domain, kingdom, phylum, division, class, order, family, genus, species

When assigning a scientific name to an organism

Both genus and species are underlined or italicized and the genus is capitalized

In Whitaker's system the protozoa and algae are classified in the Kingdom


Which of the following is the main decomposers of the Earth

Bacteria and fungi

The most common infectious cause of death worldwide


Which of the following diseases is transmitted by mosquitoes

Malaria, zika virus, dengue fever

Which is not a characteristic of prokaryotes

They have organelles

The scientist that discovered heat resistant bacterial spores

Ferdinand Cohn

Anything that occupies space and has mass


Electrons of an atom are

Negative, orbit the atom's nucleus, have no mass, involved in bonds

The subatomic particles that surround the nucleus


Isotopes are atoms of the same element that differ in their


The maximum number of electrons in second energy shell of an atom

8 electrons

Two or more atoms bonded together


Reactions involving electron release

Oxidation reaction

When two or more atoms, ions, or molecules combine to form new and larger molecules

Synthesis reaction (A + B》AB)

A solvent associate with living organisms


A solution of pH 7 compared to a solution of pH 9 is


The building blocks of an enzyme are

Amino acids

Components of a nucleotide

Nitrogen base, pentose sugar, phosphate group

Pertains to DNA but not RNA

Thymine and deoxyribose

Pertains to RNA but not DNA

Uracil and ribose

The principal energy carrying molecule of all cells

Adenosine triphosphate (ATP)

Amino acid that contains sulfur atoms that form covalent disulfide bonds in the tertiary structure of proteins


The atomic number equals the number of


The neutral particle of an atom


A chemical reaction that has both synthesis and decomposition components

Exchange reaction (AB + CD 》 AD + BC)

Carbohydrates found in dairy products


A chemical bond linking amino acids together

Peptide bond

Molecules that do not like water


Protein structure that contains both Alpha Helix and beta pleated sheets

Secondary structure

What are the five I's

Inoculation, incubation, isolation, inspection, identification

What is not a type of microbiological media

Petri dish

The purposeful addition to microorganisms into the laboratory nutrient medium


Essential for development of discrete isolated colonies

Solid medium

A pure culture contains

One species of microorganism

A microbiologist inoculates staphylococcus epidermidis and E coli into a culture medium. Following incubation only E coli grows in the culture. What is the most likely explanation?

The culture medium is selective

A method which often results in colonies developing down through the agar and some colonies on the surface

Pour plate

A common medium used for growing fastidious bacteria

Blood agar

A type of medium which is able to distinguish species or types of microorganisms based on the observable change in colonies or in the medium

Differential medium

Mannitol salt agar is selective for


A microbiologist must culture a patient's feces from intestinal pathogens. Which of the following would likely be present selective media for analyzing this fecal specimen?

Bile salts

The microscopes ability to show two separate entities as separate and distinct

Resolving power

Magnification of objective lens times magnification of ocular lens

Total magnification

The wavelength of light used plus the numerical aperture governs


Microscope in which you would see brightly illuminated specimens against a black background

Dark field microscopy

Microscope that does not use light in forming the specimens image

Electron microscopy

Microscope that has the greatest resolution and highest magnification

Electron microscopy

Microscope that is most widely used to shows staines against a bright background

Bright-field microscopy

Specimen preparation that is best for viewing cell motility

Hanging drop

The primary purpose of staining cells on a microscope slide

To add contrast in order to see them better

Gram stain, acid fast stain, endospore stain are

Differential stains; outcome based on cell wall differences

A method of staining microorganisms with a single basic dye

Simple stain

Brain heart infusion, trypticase agar (TSA) and nutrient agar are all examples of which type of media

Non-synthetic media

Bacteria that require special growth factors and complex organic substances


A media designed to allow only staphylococci to grow. In addition to staphylococcus aureus colonies to have yellow halo around them and other staphylococci to appear white

Selective/ differential media

A media that is not used as food or metabolized by most microbes, melts at 100 Celsius and solidifies at 42 Celsius. A polysaccharide extract of algae


Media that can be used to determine if a bacteria is motile

SIM media

Media used for cultivating fungi

Sabouraud's agar

A chemical reaction in which bonds are broken to produce smaller parts from large molecules (AB 》 A +B)

Decomposition reaction

What is the mordant that reacts with crystal violet?


Has the same Optical qualities as glass and thus prevents refractive loss of light as it passes from the slide to the objective lens

Immersion oil

Observing and characterizing colonial growth for size, shape, edge, elevation, color, odor, and texture is part of