DNA of microorganisms is made up of subunits called
Base pairs in DNA are held together by ___ bonds.
The enzyme that can proofread replicating DNA, detects incorrect bases, excises them, and correctly replaces them is
A permanent, inheritable change in the genetic information is called a
A sequence of bases on a gene that does not not code for protein is called an
Which is incorrect about inducible operons?
have genes turned off by a build up of end product
The lactose repressor___
is inactivated by binding lactose
Bacterial conjugation involves
a donor cell that synthesizes a sex pilus
Which of the following is not a type of bacterial DNA recombination?
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?
Repressible operons are normally turned on in the cell.
All mutations are not beneficial to the cell.
Eukaryotic chromosomes differ from prokaryotic chromosomes because only eukaryotes have ____.
"ALL of the above" -histone proteins -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 term phototroph refers to an organism that:
gets energy from sunlight
The term chemotroph refers to an organism that:
gets energy by oxidizing chemical compounds
The methanogens, producers of methane gas, require environments that:
are anaerobic with hydrogen gas and CO2
Aerobic respiration is an example of
Microorganisms that live in severe habitats, such as very hot, acidic, or salty environments, are called:
The term facultative refers to:
the ability to exist in a wide range of conditions.
Nutrient absorption is mediated by the:
An organism with a temperature growth range 45-60 deg C would be called a:
An organism that can exist in both oxygen and oxygen-less environments is a:
An organism that cannot tolerate an oxygen environment is an:
The time interval from parent cell to two new daughter cells is called the
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:
All of the chemical reactions in a cell are called:
Proteins that function as catalysts
Reactants are converted to products by:
Breaking and forming bonds
Each of the following are true of enzymes except:
they increase the activation energy of a reaction (actually decrease it)
During aerobic cellular respiration, the final electron acceptor is:
Enzymes that are always present, regardless of the amount of substrate are:
Metabolic pathways that regenerate their starting points are called _____ pathways.
Most electron carriers are:
In addition to electrons, which of the following is also involved in electron transfer?
All of the following pertain to glycolysis except:
Degrades glucose to CO2 and H2O
In bacterial cells, the electron transport system is located in the:
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.
In which pathway is the most NADH generated?
During which phase of cellular respiration is the majority of ATP formed?
Requires an organic electron acceptor
Filamentous fungi are called
Which is not characteristic of fungi?
The long thread like branching cells of molds are called
The woven, intertwining mass of hyphae that makes up the body of a mold is a
Fungal asexual spores
Are used to identify fungi
What two categories of fungi cause human disease?
Primary and opportunistic
Infections caused by fungi are called mycoses.
All fungi have hyphae.
In humans, fungi can only infect the skin.
All fungi cause some kind of disease in plants and animals.
Fungi can reproduce both sexually and asexually.
Host cells of viruses include:
humans and animals, plants and fungi, bacteria, protozoa, and algae
Cannot be seen in a light microscope
Viral capsids are made from subunits called:
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: