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The enzyme that can proofread replicating DNA, detects incorrect bases, excises them, and correctly replaces them is
The transfer of DNA fragments from a dead cell to live, competent recipient cell that results in a changed recipient cell is ___.
A bacteriophage transfers DNA of the previous host to the current host. This is an example of ____.
In Griffith's experiments with Streptococcus pneumoniae, rough non-encapsulated Streptococci were converted into smooth encapsulated Streptococci in the presence of the heat-killed smooth encapsulated Streptococci. What is the term that describes this process?
Eukaryotic chromosomes differ from prokaryotic chromosomes because only eukaryotes have ____.
"ALL of the above"
-chromosomes in a nucleus
-several to many chromosomes
-elongated, not circular, chromosomes
An organism that uses CO2 for its carbon needs and sunlight for its energy needs would be called a:
The methanogens, producers of methane gas, require environments that:
are anaerobic with hydrogen gas and CO2
Microorganisms that live in severe habitats, such as very hot, acidic, or salty environments, are called:
The phase of bacterial growth curve in which the rate of multiplication equals the rate of cell death is:
The phase of the bacterial growth curve in which newly inoculated cells are adjusting to their new environment, metabolizing but not growing is the:
The phase of the bacterial growth curve that shows the maximum rate of cell division is the:
Each of the following are true of enzymes except:
they increase the activation energy of a reaction (actually decrease it)
As the electron transport carriers shuttle the electrons, they actively pump _____ into the outer membrane compartment setting up a concentration gradient called the Proton Motive Force.
Viral nucleic acids include which of the following:
Double or single stranded DNA, double or single stranded RNA
The correct sequence of events in viral multiplication is:
Adsorption, penetration, uncoating, synthesis, assembly, release
Which of the following occurs during assembly?
Nucleocapsid is formed and viral spikes insert in host cell membrane
The event that occurs in bacteriophage multiplication that does not occur in animal virus replication is:
Injection of only the viral nucleic acid into the host cell
A common method for cultivating viruses in the lab is to use in vitro systems called ____ cultures.
In general, most DNA viruses multiply in the host cell's ____, while most RNA viruses multiply in the host cell's __.
Which of the following is not true of the outer membrane?
Gram positive bacteria have an outer membrane
A prokaryotic cell wall that has primarily peptidoglycan with small amounts of teichoic acid and lipoteichoic acid is
The cell _____ can be composed of three layers: the membrane, the cell wall and the outer membrane.
Which of the following is not a bacterial class involved in causing human and animal diseases?
The most immediate result of destruction of a cell's ribosomes would be
Protein synthesis would stop
The enzyme _____, that is found in tears and saliva, can hydrolyze the bonds in the glycan chains of certain bacterial cell walls.
Halobacterium salinarium lives in and requires salt to grow. This is an example of an archaeabacterium described as a(n) __.
The transfer of genes during bacterial conjugation involves rigid, tubular appendages called
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