inserting of genes from one organism into the genes of another
What is genetic engineering or gene splicing
100
a change in a species over time
What is evolution
100
where all the energy on earth begins before being passed to producers and consumers.
What is the sun
100
the overall effect on the ecosystem resulting from development, industrialization, pollution, farming, over hunting, overgrazing, clear cutting, introduction of foreigh species, and soil erosion.
What is negative
200
represented by the 4 letters: A,T,G,C. Used to code for amino acids when making proteins
What are nitrogen bases
200
used to cut and copy DNA segements
What are restriction enzymes
200
modern species evolved from earlier, different species and share a ________________.
What is common ancestor
200
unlike energy which flows in one direction and once used is gone, nutrients get
What is recycled
200
term used to describe the variety of life on earth
What is biodiversity
300
sections of DNA used to code for a trait
What is a gene
300
a human hormone that is being made by bacteria cells. It is used to treat people with diabetes
What is insulin
300
the mechanism that causes a species to change, including: overproduction of offspring,competition, and survival and reproduction or death. Nature is choosing who survives!
What is natural selection
300
factors such as air, water, food and predators which determine which organisms can live in an ecosystem and control the population size
What are limiting factors
300
caused by an increase in CO2 in the atmosphere mainly from the burning of fossil fuels
What is global warming
400
any change in DNA
What is a mutation
400
once DNA is cut into pieces the technique is used to separate the pieces
What is gel electrophoresis
400
variation is vital to the survival of a species if/when the environment changes. The two sources of variation are
What are sexual reproduction and mutations
400
the maximum number of organisms that the environment can support is represented by
What is carrying capacity
400
the result of nitrogen and sulfur getting into the atmosphere and combining with water vapor
What is acid rain
500
when human breed certain organisms based on characteristics we want
What is selective breeding
500
when scientist take DNA from one organism and add it to an empty egg cell creating a new offspring which is genetically identical to the parent.
What is cloning
500
organisms that are better adapted to thier environment and able to reproduce successfully are considered to be more ____________.
What is fit
500
the change in an environment in which older communities are replaced gradually by new ones
What is ecological succession
500
an organism who is brought from one part of the world to another and reproduces rapidly, outcompeting the native species.