Test for Module 9 Flashcards
a thick internal wall, make of several hard layers, produced by the bacterium, that encloses its DNA and other essential parts
endospore
the science dealing with the description, identification, naming, and classifying of organisms
taxonomy
If a sample of food is dehydrated, what condition for bacterial growth are you removing from the food?
moisture
Bacteria cells that have rod-shaped cells are called
bacilli
What is the colony type of bacteria from the genus Streptococcus?
chains
According to the five-kingdom system, what kingdom contains organisms whose structure is composed of prokaryotic cells?
Monera
an organism that feeds on dead matter
saprophyte
What does a vaccine do to make a person immune to a virus?
It stimulates the body’s immune system to produce antibodies against the virus. The immune system remembers the virus so that new antibodies are made if the person comes in contact with the virus again.
How are the lytic and lysogenic cycles the same?
both begin with a virus by injecting its DNA or RNA into a living cell.
What are the three ways bacterium receives a new trait it did not previously have?
conjugation, transformation, or transduction
How are the lytic and lysogenic cycles different?
In the lytic cycle, the viral DNA hijacks the cells replication and protein synthesis systems and makes copies of its DNA and proteins. Eventually the cell ruptures releasing the new viruses. In the lysogenic cycle, the DNA inserts itself into the DNA of hte cell and is replicated along with the cell’s DNA. It does not lyse the cell.
a virus enters a cell, embeds its DNA into the DNA of the host cell and its replicated along with the host cell’s DNA
lysogenic cycle
What is the shape of bacteria from the genus Streptococcus?
spherical
a virus enters a cell, hijacks the host cell’s DNA replication system, makes copies of itself, and causes the cell to burst releasing more viruses
lytic cycle
What type of bacterium has a cell wall made of a thin layer of peptidoglycan, has an extra cell membrane, does not readily absorbs the purple-blue dye, and becomes stained pink-red?
gram-negative bacteria
