Evolution
Inside Cells
DNA
Ecology
Scientific Method
100
structures that share a common ancestry, like the forelimbs of humans and bats
homologous structures
100
a cell without a nucleus would be called a
prokaryotic cell
100
DNA helicase
the enzyme that unzips DNA before it is copied or transcribed
100
all the members of the same species in an area
population
100
a standard for comparison, in a controlled experiment
control
200
fitness (according to evolution)
the ability to leave more offspring and pass on more genes
200
osmosis
the diffusion of water through a selectively permeable membrane, down/with its concentration gradient
200
the molecule that is transcribed from a DNA strand and carries its code to the ribosomes
messenger RNA (mRNA)
200
the maximum size of a population that can be sustained in an environment
carrying capacity
200
the variable that is changed on purpose by the experimenter, in a controlled experiment
independent variable
300
an inherited trait that has become common in a population because it provides a selective advantage
an adaptation
300
a solution that causes a cell to swell because of osmosis
a hypotonic solution
300
A & T is an example, and so is C & G
complementary base pair
300
Gause demonstrated this concept, that 2 species cannot occupy the same niche
competitive exclusion
300
a testable prediction in a controlled experiment
hypothesis
400
the theory that individuals with traits that are better suited to their environment are more likely to survive and will produce more offspring
natural selection
400
a type of cellular respiration that occurs under anaerobic conditions
fermentation
400
leucine, from CUU
an example of transcription
400
an elephant is an example of this kind of strategist
What is an r-strategist?
400
variables that are kept constant by the experimenter, in a controlled experiment
constants
500
the accumulation of differences between groups, that over time leads to the development of a new species
speciation
500
in meiosis, the cells created from one diploid mother cell--how many and what kind?
four haploid daughter cells
500
an area on E coli that consists of 3 lactose-metabolizing genes, an operator, and a promotor site
the lac operon
500
the concept that 90 percent of the biomass is lost as you go up one level on an energy pyramid
the ten percent rule
500
a set of related hypotheses that have been tested and confirmed many times
a theory
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