Disease causing microorganisms are called
Pathogens
Which scientist discovered heat resistant bacterial spores
Ferdinand Cohn
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Disease causing microorganisms are called
Pathogens
Which scientist discovered heat resistant bacterial spores
Ferdinand Cohn
The six “I’s” of studying microorganisms include all of the following except
infection
All of the following are examples of different types of microbiological media except
Petri dish
Which of the following is essential for development of discrete, isolated colonies
Solid medium
The term that refers to the purposeful addition of microorganisms into a laboratory nutrient medium is
Inoculation
A pure culture contains only
One species of microorganisms
Which of the following magnifies the specimen to produce the real image of the specimen
Objective lens
The type of microscope that you will use in this course is
Bright-field
What is the total magnification of a specimen being viewed under the microscope using a 10x ocular lens and a 40x objective lens
400x
Which type of medium is able to distinguish different species or types of microorganisms based on an observable change in the colonies or in the medium
Differential
The microorganisms that do not have a nucleus in their cells are called
prokaryotes
The Gram stain, acid-fast stain, and endospore stain
are differential stains.
A selective medium contains one or more substances that inhibit growth of certain microbes in order to facilitate the growth of other microbes.
true
Fixed smears of specimens are required in order to perform the Gram stain and endospore stain on the specimens.
true
Pasteur used swan-neck flasks in his experiments to prove that
dust in air was a source of living microorganisms.
Spontaneous generation is the idea that
living things arise from nonliving matter.
Select the correct order of taxa from most inclusive to least inclusive.
Phylum, class, order, family, genus
Helminths are
parasitic worms.
Organisms called parasites are
always harmful to their host.
When assigning a scientific name to an organism,
both genus and species names are italicized or underlined.
All of the following are correct about prokaryotes, except
they have organelles.
Protists include
algae and protozoa.
The size of a typical eukaryotic cell ribosome found in the cytoplasm is
80S.
The eukaryotic organelle that most resembles a bacterial cell is the
mitochondria.
Cilia are found in certain
protozoa.
Chitin is a chemical component of the cell walls of
fungi.
Cell walls are not found on typical cells of
protozoa.
The site for ribosomal RNA synthesis in eukaryotes is the
nucleolus.
The eukaryotic cell's glycocalyx is
composed of mostly polysaccharide.
The endosymbiotic theory says that precursor eukaryotic cells acquired mitochondria by endosymbiosis with a/an_______ ancestor, and others gained photosynthetic ability from endosymbiosis with a/an_______ ancestor.
rickettsia; cyanobacteria
Organelles found in algae but not found in protozoa or fungi are the
chloroplasts.
Which organelle is involved in the locomotion, feeding, and protection in protozoa?
Ectoplasm
What is the main characteristic of protozoa that differentiates them from other microorganism?
Lack of a cell wall
What is microbiology?
Its a study of microorganisms which are too small to see without a microscope that includes bacteria, viruses, fungi, protozoa, algae, and helminths.
What does it mean when they said microbes are ubiquitous?
It means that microbes are found everywhere in the environment. They help recycle nutrients and produce energy, keeping air, soil, and water balanced and healthy.
What is bacteriology?
the study of bacteria, they’re tiny and single-celled organisms w/o nucleus. They reproduce quickly and adapt easily.
What is Mycology?
The study of fungi, including tiny one like mold and yeasts and larger ones like mushrooms. Fungi breaks down matter and reproduce using spores.
What is the primary mode of nutrition for fungi?
Heterotrophic
What is Protozoology?
the study of protozoa which are mostly single celled organism w/ special parts for moving and eating. They can be tiny or visible in water.
What is the organelle involved in locomotion, feeding, and protection in protozoa?
Ectoplasm
What is Virology?
the study of viruses, tiny particles needing host cells to reproduce. Viruses have genetic material in a protein coat and can’t live independently.
What is Parasitology?
studies organisms like protozoa and helminths that depends on hosts for survival. Some are harmless, while others, like Plasmodium can cause diseases
What is Phycology?
study of algae. algae are plants that use sunlight for energy. They range from tiny cells to big seaweeds and help produce oxygen
What is the primary focus of the field of parasitology?
The study of eukaryotic parasites
What is Morphology?
studying the shapes and structures of tiny living things, helping us understand what they do and how they are classified
What tern describes the investigation of organismal metabolism at the cellular and molecular levels?
Physiology
What branch of microbiology focuses on the classification, naming, and identification of microorganisms?
Taxonomy
Which type of cells have membrane-bound organelles?
Eukaryotic
Which structure controls what enters and exits a cell?
Cell membrane
What is the correct format for a scientific name?
Genus species
Which of the following is photosynthetic?
Algae
What does the term “pathogen” refer to?
A microbe that causes disease
Who disproved spontaneous generation using broth experiments?
Louis Pasteur
What is the study of microscopic organisms called?
Microbiology
A scientific theory has little or no evidence to support it and could be best described as a “best guess”
False
Organism in the same Family must also be in the same Class
true