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evolution

words about science

TermDefinition
Fossil A trace of an ancient organism that has been preserved in rock.
competition the struggle between organisms to survive in a habitat with limited resources
evolution change over time
homologous Structures in different species that are similar because of common ancestry.
specification Formation of new species
extinction the diminishing of a conditioned response
ancestor A relative who lived in the past
embryo developing stage of a multicellular organism
over reproduction Occurs when too many offspring are produced than can possibly survive
variation Any difference between individuals of the same species.
natrual selection organisms most adapted to enviroment are more likely to survive.
contration a period of economic decline marked by falling real GDP
relaxation diastole
autonomic parts of the cell membrane that receive the neurotransmitter and initiate or prevent a new electric signal
receptors controls self-regulated action of internal organs and glands
cellular respiration process that releases energy from food in the presence of oxygen
amino acids building blocks of proteins
proteins Chains of amino acids
lipids the starches and sugars present in foods
carbohydrates food consisting of or containing a lot of carbohydrates
enzymes Catalysts for chemical reactions in living things
motor movement
tissues A group of similar cells that perform the same function.
excretory removes waste
hormones Chemicals produced by your glands that regulate the activities of different body cells
mitosis division of the nucleus
meiosis Cell division that produces reproductive cells in sexually reproducing organisms
osmosis diffusion of water
diffusion The process of spread of a feature or trend from one place to another over time
dominant An allele that is always expressed
recessive An allele that is masked when a dominant allele is present
mutation A change in a gene or chromosome.
sensory senses
Created by: enadiavarner