28 terms

Rise of the Superbugs Unit Vocabulary

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Natural Selection
Organisms with more advantageous traits for their environment survive and reproduce more often (This causes traits in the population to change over time).
Overproduction of offspring
Organisms produce more offspring than needed to sustain the population.
Successful reproduction
The best adapted to their environment are likely to have many offspring that survive.
Adaptation
A trait that helps a population survive
Population
A group organisms of the same species living in a particular area at the same time
Trait
A characteristic that an organism can pass on to its offspring through its genes.
Genetic Variation
Any difference between individuals of the same species.
Mutation
The process in which DNA changes result in new alleles
Extinct
When the last of a species dies
Biological Fitness
A species that is most suited to survive in a certain type of environment.
Antiobiotic Resistance
the process by which a genetic mutation allows a bacterium cell to survive antibiotics intended to kill it
Antibiotics
Chemicals that kill bacteria and inhibit their growth. Does not work on viruses.
Allele
An alternative form of a gene (one member of a pair) that is located at a specific position on a specific chromosome that determine traits.
Heredity
Genetic factors are transmitted from one generation to the next.
Competition
ecological interaction which leads to decreased population growth for both species
Limited Resources
An environmental factor that prevents a population from increasing (Food, space, shelter, mates)
Bacteria
A single-celled, microscopic prokaryotic organism, classified by shape.
Virus
Nonliving, requires a host to reproduce and survive
Superbug
Bacteria that have resistance to multiple antibiotics.
Conjugation
Bacteria can exchange genes with other bacteria through this process. This allows mutations that arise to be passed down generations.
MRSA
a type of dangerous, antibiotic resistant bacteria
Meiosis
Cell division that produces reproductive cells in sexually reproducing organisms
environment
the surroundings or conditions in which a person, animal, or plant lives or operates.
DNA replication
The process in which DNA makes a duplicate copy of itself.
bacterial conjugation
The direct transfer of genetic material (DNA) from one bacterial cell to another with plasmids
bacterial transformation
ability of bacteria to alter their genetic makeup by uptaking foreign DNA from another bacterial cell and incorporating it into their own
bacterial transduction
when bacteria exchange DNA by using a bacteriophage
gene flow
movement of alleles from one population to another
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