Biology: Chapter 1(the science of life)

Question	Answer
What is biology?	science of life. involves the study of living things and the theories that describe the world of life.
what are biologists	scientists who study living things
all living things share the _________________________	characteristics of life
list down 7 characteristics of life	movement, reproduction, sensitivity, growth, respiration, excretion, nutrition (MRS GREN)
what is nutrition?	process by which organisms take in food and convert it to new protoplasm
what is respiration?	oxidation of food substances to release energy for cell activities. energy is set free when these substances are broken down through respiration into carbon dioxide and water
metabolism	sum of all the biochemical reactions that takes place within the cell
excretion	process by which organisms remove metabolic waste products
growth	permanent increase in mass and volume of an organism when absorbed food is converted to protoplasm
movement	independent of external forces such as wind or water currents
reproduction	necessary for a species to survive
species	a group of similar organisms
sensitivity	response of living organisms to a stimulus
stimulus	external influence causes an organism to react in a predictable way
adaptation	any characteristic of an organism that improves it chances of surviving in its environment

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	Created by elisabethsophie3 over 8 years ago