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Description
Flashcards by eleni.eftychiou, updated more than 1 year ago
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Created by eleni.eftychiou
about 9 years ago
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| Question | Answer |
| what is biology? | the study of life |
| cells ➝ _______ ➝ _______ ➝ _______ ➝ organism | tissues, organs, organ systems! |
| what are the 7 characteristics of life? | organization, response to stimuli, homeostasis, metabolism, growth and development, reproduction, and change through time. |
| what is a stimulus? | something that evokes a reaction in an organ or tissue. can be internal/external, and physical/chemical |
| what is homeostasis? | the maintenance of a stable level of internal conditions example: sweating to cool down |
| what do all living things use to power their life processes? | energy!!! |
| what's metabolism? | the chemical processes that occur within a living organism to maintain life. |
| what the heck are growth and development?? | cells enlarge and divide. the organism becomes a mature adult. (remember: cell specialization) |
| DNA? genes? | DNA contains all the information to make an organism. genes carry only one trait. |
| change through time??? | evolution, and organisms better adapted to their environment survive. |
| define cell | the smallest unit that can perform all of life's processes |
| name the six kingdoms of life | animalia, plantae, fungi, protista, archaea, and bacteria |
| eleni, what is a hypothesis? and a prediction? | a hypothesis is a proposed scientific explanation for a set of observations. a prediction states what should happen if the hypothesis is supported. "if _______, then _______." |
| what's the difference between a control group and an experimental group? | a control group is used for comparison, while the experimental group is being experimented on. |
| what's the difference between an independent and a dependent variable? | independent is the factor that is changed, while the dependent variable is the factor that is being measured or observed. it changes depending on the independent variable. |
| theory v. law | theory: has not been proven, but is supported. law: proven, also what we can expect. |
| how does science usually begin? | with exploration and discovery, then testing ideas, then feedback, then outcomes. but usually it bounces back and forth between all of these. |
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