Scientific Method
Scientific investigation usually starts with...
An observation OR a question
This is the ONE thing that is changed in an experiment
Independent Variable (IV)
True/False: Biology is the study of life.
TRUE
Something is considered non-living if...
Mike wanted to determine what exercises would cause his heart rate to increase the fastest. He tested push-ups, sprints, sit-ups, and chin ups. He did this at 6am every morning.
What is a constant variable in his experiment?
Time of Day
Experiment
This is the variable that is measured/observed in response to the IV
Dependent Variable (DV)
All living things are highly organized. What are these "organizations" made of?
Cells (and by extension, tissue/organs/organ systems)
True/False: All living things are able to respond to stimuli such as light/heat/sound/chemicals.
TRUE
Mike wanted to determine what exercises would cause his heart rate to increase the fastest. He tested push-ups, sprints, sit-ups, and chin ups. He did this at 6am every morning.
What is the IV of his experiment?
Type of Exercise
An "If, then" statement used as a prediction to answer a research question.
Hypothesis
The participants of an experiment receiving "normal" conditions are the _____ group.
True/False: Living organisms are not required to have DNA.
FALSE, all organisms must have DNA to be considered "living".
The ability to make more of your own kind, either asexually or sexually.
Reproduction
Mike wanted to determine what exercises would cause his heart rate to increase the fastest. He tested push-ups, sprints, sit-ups, and chin ups. He did this at 6am every morning.
What is the DV of his experiment?
Heart Rate
This step of the scientific process involves taking your analysis and communicating out whether your hypothesis was supported or not.
Conclusion
When graphing your results, which variable goes on which axis?
X-axis = IV
Y-axis = DV
An organism's ability to self-regulate a stable internal environment (ex: Body Temperature) is called...
Homeostasis
Name an example of how an organism might be adapted to their environment.
Camo, Hibernation, Migration, etc. (Answers vary)
Mike wanted to determine what exercises would cause his heart rate to increase the fastest. He tested push-ups, sprints, sit-ups, and chin ups. He did this at 6am every morning.
What is a possible hypothesis for this experiment?
If..(IV)..then..(change in DV). (answers vary)
What is a "constant variable"?
A researcher made a bar graph to track the size of a population of frogs over a period of 6 months. Is this the right graph to use? Why?
No, they should use a line graph because it is tracking over a TIME PERIOD.
What is one way the human body maintains balance via homeostasis?
Answers vary (respiration rate, sweating, shivering, glucose/insulin release, etc.)
All living things need to obtain energy. What is different is how AUTOTROPHS and HETEROTROPHS obtain energy?
Autotrophs - make own food inside them, ex: plants
Heterotrophs - eat food/get food from their environment, ex: animals
Mike wanted to determine what exercises would cause his heart rate to increase the fastest. He tested push-ups, sprints, sit-ups, and chin ups. He did this at 6am every morning.
What could Mike do to add a CONTROL group?
Measure his heart rate at rest/when not doing exercise.