Life Characteristics: made of cells, reproduce, respond to stimulus, grow/develop, obtain & use energy, adapt, maintainhomeostasis, have DNA.
Homeostasis: the process by which a stableinternalenvironment is maintained despite changes in the externalenvironment.
Homeostasis is a characteristic of alllivingthings.
Our body makes adjustments to maintain stableconditions.
All organisms maintain life differently.
Lack of homeostasis = disease
Losing homeostasis for a long time leads to death.
Homeostasis is maintained with the capability to sense when changes have changed through stimuli and the ability to respond with appropriate adjustments.
Homeostasis is also known as DynamicEquilibrium.
There are 2 types of reactions when conditions fluctuate within an acceptable range, Physiological Response and Behavioral Response.
Physiological Response: how the body responds to environmentalchanges.
Behavioral Response: how the organism chooses to respond to the environment.
A homeostatic control system has a monitor, coordinatingcenter, and a regulator.
The monitor detects a change.
The coordinating center receives/directs a message/response.
The regulator carriesout the response.
Negative Feedback reverses and returns to previous conditions to maintain homeostasis.
Positive Feedback continuouslyincrease/decreases.
Science uses evidence to construct testableexplanation and predictions of a naturalphenomena.
Scientific Method is a general style of investigation with observing and askingquestions.
Inferences are a logicalinterpretation based on what scientists already know.
A hypothesis is a tentative scientificexplanation that can be tested further.
A hypothesis must be testable and specific.
The Independent Variable is the 'cause', it can be manipulated, and changed in the experiment. (x-axis)
The Dependent Variable is the 'effect', it is responded, and what is measured "depending" on what was changed. (y-axis)
The Independent Variable causes the dependent variable to change.
Control group - variables that are kept constant.
Quantitative data are numbers.
Qualitative data is descriptive.
Scientific Theories are theories that we cannot test, but they are well-supported and have not been disproven.