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Bio
Scientific Method/ Living Things
| Question | Answer |
|---|---|
| what is the first step of the scientific method? | ask a question/ observe |
| what is a hypothesis? | a possible explanation to the question or problem |
| what are the factors that can be changed in an experiment? | variables |
| what does the experimental group show? | the effect of the variable that is tested |
| what is the independent variable? | the variable that is deliberately changed |
| what is the dependent variable? | the variable is the one observed during the experiment |
| what is a theory? | a broad and comprehensive statement of what is thought to be true |
| what is the difference between a theory and a hypothesis? | a theory is what is thought to be true based on results and information and a hypothesis is an educated guess that is testable |
| the statement "the worm is 2cm long" is a ? | observation |
| to be useful in science a hypothesis must be? | testable |
| what are the goals of science? | to investigate and understand the natural world |
| how does an observation differ from an inference? | an observation is based on using your 5 senses and an inference is based on prior knowledge |
| why does it make sense for scientists to only change one variable at a time? | to see which variable is responsible for those results |
| what steps are used when drawing a conclusion? | using data to revise their hypothesis |
| what is a scientific theory? | a well- tested explanation that unifies a broad range of observations |
| why arent theories considered absolute truths? | science is always changing and new evidence can always prove it to be wrong |
| whats the process when 2 cells reproduce? | sexual reproduction |
| whats the process when 1 cell reproduces? | asexual reproduction |
| what is a unicellular organism? | living things with only one cell |
| what is a multicellular organism? | living things with more than one cell |
| define metabolism | chemical reactions which build up or break down materials |
| what is unicellular growth? | a change in size |
| what is multicellular growth? | development when a single fertilized egg divides again and again |
| define differentiation | cells dividing and changing in shape and structure and performing different functions |
| define stimulus | a signal to which an organism responds |
| define homeostasis | keeping internal environment stable |
| define excretion | removal of wastes or toxins |
| define growth | increase in size and mass by increase in cell # or size |
| define movement | an action by an organism causing a change in position or place |
| define nutrition | taking in of nutrients and using them for growth and repair |
| define reproduction | processes that make more of the same organism |
| define respiration | chemical reactions that break down glucose and other nutrient molecules in living cells to release energy that they can use |
| define sensitivity | ability to detect or sense changes in the environment and to make responses |
Created by:
ashley12783
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