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GBio CH1 exam rev

G Bio CH 1 exam review flashcards

QuestionAnswer
what is the scientific method? a way of figuring out answers to scientific questions that involves experimentation
what is a hypothesis an educated guess
what is the independent variable the variable changed by the person doing the experiment
what is the dependent variable the variable measured by the person doing the experiment
what is the control group the group the person doing the experiment compare their other trials to
what are experimental constants? parts of the experiment that are the same for each trial
what is the difference between an theory and a law in science? a theory is a tested EXPLAINATION that is supported by a lot of evidence. a law is a tested STATEMENT that is supported by a lot of evidence
all living things are made of .... cells
cells working together build tissues
tissues working together build organs
organs working together build organ systems
organ systems working together build an organism
what are the 5 qualities that make something living? they have cells, they respond, the use energy, they grow and develop, and they reproduce
what does homeostasis mean? keeping the "home" stable. ex: if a person is cold they will shiver to try and warm up and get back to normal
what are 4 raw materials that all living things need? food, water, shelter, and space to live
what was the old theory of spontaneous generation? that life can come from the nonliving (maggots come from meat left on the counter too long)
what is the theory of biogenesis? life comes from life (ex: baby mice come from parent mice)
what does phylogeny mean? the evolutionary history of an organism
what kind of graph shows the evolutionary history of an organism? cladogram
what does binomal nomenclature mean? it means all living things have 2 parts to their scientific names- genus and species
what are the 2 parts of an organisms scientific name? genus and species
which part of the scientific name is capitalized? only the first letter of the genus- all other letters in the name are lower case
what do you call a key used to identify organisms. it has 2 choices at each step. dichotomous key
Created by: ruth.baker
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