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biology char/life

TermDefinition
cell the smallest and basic unit of life
ecology science that studies the interactions between organisms and their environments
niche an organisms role in an enviroment
autotroph an organism that creates its own food
unicellular organism made out of one cell
multicellular organism made out of more than one cell
Asexual reproduction reproduction that does not involve gametes
Sexual reproduction reproduction that involves cells from two parents
gamete sperm and egg cells
heredity all organisms have genetic material that is passed down to offsprings
gene a part of DNA
mutation a change in DNA
Evolution a change in heritable characteristics of a species over time
natural selection the process by which organisms with more favorable traits survive longer
heterotroph an organism that cannot make its own food
homeostasis a stable internal enviroment
metabolism the sum of chemical reactions in a body like cellular respiration
organ tissues working together
organ system a group of organs working together
organisms a living thing that posses all living characteristics of life in its life span
reproduction the production of offspring
stimulus a change internal or external from the body
tissue group of cells working together
prokaryote no nucleus
eukaryote nucleus
growth increase in material or sized
development changes that take place in life
Negative feedback Finds a way to get back to homeostasis
positive feeback keeps increasing out of good range
receptor sensory organ
stimuli action/variable that evokes a response
effector an organ/organ system that acts in response
response caused action by effector
adaptations have changes that increase their chances in survival
limited life span cannot live forever
respond to stimuli helps run away from danger and gives a response to a change
organized and are complex more than one part in their body which helps the organism do special functions
insulin lowers blood sugar by having organs use blood sugar
glucagon raises blood sugar by having the liver relaease insulin
Created by: user-2069811
 

 



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