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WHITE / FRITZ vocab
May Final Exam - Vocab. you need to know!
50
Biology
9th Grade
05/21/2013

Additional Biology Flashcards

 


 

Cards

Term
Biosphere
Definition
All the parts of the planet that are inhabited by living things
Term
Organism
Definition
Any Living THing
Term
Cells
Definition
Building block of living things - basic unit of structure
Term
Eukaryotic Cell
Definition
Cells that have a nucleus
Term
Species
Definition
a distinct form of life
Term
Data
Definition

Recorded obervations or bits of information

 

(with numbers - quantitative data)

(qualities from senses - qualitative data)

Term
Hypothesis
Definition
suggested, TESTABLE answer to a well defiend scientific question
Term
Controlled experiment
Definition
Has one variable you are testing for
Term
Active transport
Definition
Requires energy to move materials against the gradient,that is from low to hi
Term
Diffusion
Definition
Net movement of particles of a substance from where they are in HI concentration, to where they are in lo concentration
Term
Meiosis
Definition
Cell division that results in four haploid (n) daughter cells
Term
Biology
Definition
Study of Living things
Term
Cell Nucleus
Definition

the part of the cell that houses the cells genetic material (DNA) and directs activities of the cell

(Brain of cell)

Term
Plasma membrane
Definition

Is composed of phospho- lipid bilayer and is porous - allowing substances in to and out of cell

Controls what comes in and out of cell

Term
Autotroph
Definition
Producer - can make its own food (like a plant)
Term
PHotosynthesis
Definition

Process by which plants make chemical energy (glucose) from sunlight and pigments in the presence of CO2 and H2O

 

carbon dioxide and water --> in the presence of sunlight and pigments = glucose and gives off O2

 

Term
Cellular Respiration
Definition
breaks the chemical bonds of food to provide energy - the products of photosynthesis become the reactants for cellular respiration
Term
DNA Replication
Definition
The process of copying DNA molecules for cell division
Term
Translation
Definition
Process by with a sequence of nucleuic acids in RNA is used to direct the production of proteins
Term
Dominant
Definition
Trait that shows up and masks the recessive trait always used with capital letter
Term
Nucleotide
Definition
Building block of nucleic acid (Sugar, phosphate and nitrogen base)
Term
Crossing over
Definition
exhange of genetic material between hmologous chomosomes during prophase I of meiosis
Term
DNA/RNA Polymerase
Definition
Enzyme that helps break down the DNA and RNA to allow for copying or translation
Term
Recessive
Definition

trait that is hidden or does not show up

small letter

Term
Incomplete dominance
Definition
or intermediate - where a blended trait shows up, that is Red plant X White plant yeilds a pink plant
Term
Co dominance
Definition
Neither allele is dominant over the other and both show up - like red and white cross yeilds both red and white hairs (roan color) not blended
Term
Sex Linked trait
Definition
Traits that are located on the X or Y chromosome - show up more often in one sex than the other
Term
Gamete
Definition
Sex Cell - like sperm or egg, has half the number of chromosomes (haploid)
Term
Trait
Definition
a variation of a particular inherited characteristic
Term
Genotype
Definition

Genetic make up of individual for a trait, like

AA or Aa

Term
Phenotype
Definition

Physical trait - how the genes show up, like

brown hair

Term
Homozygous
Definition
Same gene for each allele - like AA or aa
Term
Test Cross
Definition
Breeding to a known homozygous recessive (aa) to see what offspring are produced
Term
karyotype
Definition
Display of persons 46 chromosomes
Term
Heterozygous
Definition
Two different alleles for same trait (Aa)
Term
Carrier
Definition
Carries the recessive trait, but it does not show up in phenotype
Term
Hybrid
Definition
Heterozygous (Aa)
Term
Allele
Definition
a trait or characteristic
Term
geographic isolation
Definition
separation of populations due to geographic isolation (from flooding, earthquake, etc)
Term
adaptive radiation
Definition
evolution from a common ancestor that results in different species due to different environments
Term
Punctuated equilibrium
Definition
change happens relatively quickly due to some change in environment - like the moths changing color due to pollution on trees
Term
relative dating
Definition
determining age due to position in rock - fossil records
Term
radioactive dating
Definition
determining age through study of radioactive material half-lifes
Term
gene pool
Definition
all the genetic material in a population
Term
homologous structures
Definition

unrelated structures that perform the same job

(ie fin or arm)

Term
inveterebrate
Definition
no backbone
Term
evolution
Definition
change in a species over a long period of time
Term
artificial selection
Definition
when specific traits are artificially selected (like a farmer growing certain color plants)
Term
natural selection
Definition
theory where the most fit organisms best adapted to their environment reproduce at a greater level and change the gene pool
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