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Cell Biology Mr. B

Cell biology terms, chapter 1

QuestionAnswer
Nature everything in the universe except what humans have manufactured.
atoms fundamental biulding blocks of all substances, living and non living
molecules atoms joining with other atoms
organism individual that consists of one of more cells
population group of individuals of the same kind of organism, or species, living in a specified area
community consists of all populations of all species in a specified area
ecosystem a community interacting with its physical and chemical enviroment
biosphere encompasses all regions of earth's crust, waters, and atmosphere in which organisms live
emergent property characteristic of a system that does not appear in any of its component parts
energy capacity to do work
nutrient type of atom or molecule that has an essiental role in growth and survival and that an organism cannot make for itself
producers acquire energy and simple raw materials from enviromental sources and make their own food
photosynthesis sunlight energy to make sugars from carbon dioxide and water
consumers cannot make their own food; they get energy and nutrients indirectly by eating producers and other organisms
receptor a molecule or cellular structure that responds to a specific form of stimulation
DNA a nucleic acid, is the signature molecule of life
traits distinct features
inheritance transmission of DNA from parents to offspring
Reproduction refers to actual mechanisms by which parents transmit DNA to offspring
development the orderly transformation of the first cell of a new individual into an adult
species kind of organism
genus group of species that share a unique set of features
bacteria single cell organisms
Archaeans single cell organisms
eukaryotes start off life with a nucleus
protists simplesst kind of eukaryote.
fungi mushrooms
plants Multicelled species
animals multicelled consumers that ingest tissues or juices or other organisms
mutations small scale changes in DNA
adaptive trait better chance of surviving and passing its DNA to offspring
natural selection different survival and reproduction of individuals in a populations that different in the details of their heritable traits
evolution simple means change in a line of descent
Created by: meganroosee
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