Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
22 Cards in this Set
- Front
- Back
|
Steps of Scientific Method
|
-state the problem
-form hypothesis -set up experiment -record results -analyze results -draw conclusion -publish results |
|
|
Hypothesis
|
-predicted outcome of experiment
|
|
|
Theory
|
-well tested explanation that makes sense of a variety of scientific observations
-not a fact, can be rejected or modified as new evidence is revealed |
|
|
Dependent Variable
|
-the variable that responds
-variable that will be measured after experiment is set up |
|
|
Independent Variable
|
-the variable that is purposely changed or manipulated
-will be the cause of the changes measured |
|
|
Control Group
|
-group that is not given the independent variable
-normal group |
|
|
Observation
|
-use of senses to gather data
|
|
|
Inference
|
-a logical conclusion based on observations
|
|
|
Qualitative Observations/Data
|
-descriptions using words or sketches
|
|
|
Quantitative Observations/Data
|
-includes measurements and numbers
|
|
|
Controlled Experiment
|
-experiment that is not effected by any unplanned variables
|
|
|
Variable
|
-a factor that is liable to change
|
|
|
Cellular Organization
(Characteristic of Life) |
Unicellular Organisms
-organism is just one single cell -bacteria and protists Multicellular Organisms -organism is made up of multiple cells -cells have specialized functions within the organism |
|
|
Reproduction
(Characteristic of Life) |
-the process of producing new organisms of the same type
Asexual Reproduction -a single parent organism reproducing by itself Sexual Reproduction -2 different parent organisms contribute genetic information -involves the combination of male and female sex cells |
|
|
Inheritance
(Characteristic of Life) |
-genes carry hereditary information
-genes are composed of DNA -hereditary is the reason child resembles parents -mutations change DNA code and can be passed off to offspring |
|
|
Obtain and Use Energy
(Characteristic of Life) |
-living organisms need energy to grow, develop, repair damage, and reproduce (comes from chemical bonds of food)
-producers: produce their own food (photosynthesis) -consumers: eat other organisms -decomposers: break down/digest dead organisms -metabolism: the total sum of all chemical reactions in the body -anabolism: constructing complex molecules from simpler ones -catabolism: break down of complex substances into simpler ones |
|
|
Homeostasis
(Characteristic of Life) |
-self regulation
-maintaining the same internal conditions regardless of external conditions EX: body temperature, blood volume, ph balance, water balance |
|
|
Responsiveness
(Characteristic of Life) |
-organisms react to stimuli
EX: light, temperature, odor, sound, gravity, heat, water, pressure |
|
|
Growth and Development
(Characteristic of Life) |
-most living things go through a cycle of development (physical or chemical transformations)
-growth: physically become larger |
|
|
Adapt Through Evolution
(Characteristic of Life) |
-adaptation: traits that benefit organisms in their environment (camouflage, venom)
-species obtain adaptations through evolution -evolution: over great periods of time, individuals do not evolve, species do |
|
|
Levels of Organization
|
-biosphere: all the parts of the plants that are inhabited by living things; the sum of all ecosystems
-ecosystem: the community and all non-living factors -organism: individual living thing, comprised of several organ systems functioning together -cell: smallest level of organization, considered to be alive -DNA/genes: hereditary information passed from parents to offspring |
|
|
Classification
|
-unicellular: single cell
-multicellular: multiple cells -prokaryote: no organelles nor nucleus -eukaryote: nucleus |
