Basis of Biology

Cards (34)

  • Life Characteristics: made of cells, reproduce, respond to stimulus, grow/develop, obtain & use energy, adapt, maintain homeostasis, have DNA.
  • Homeostasis: the process by which a stable internal environment is maintained despite changes in the external environment.
  • Homeostasis is a characteristic of all living things.
  • Our body makes adjustments to maintain stable conditions.
  • 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 Dynamic Equilibrium.
  • 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 environmental changes.
  • Behavioral Response: how the organism chooses to respond to the environment.
  • A homeostatic control system has a monitor, coordinating center, and a regulator.
  • The monitor detects a change.
  • The coordinating center receives/directs a message/response.
  • The regulator carries out the response.
  • Negative Feedback reverses and returns to previous conditions to maintain homeostasis.
  • Positive Feedback continuously increase/decreases.
  • Science uses evidence to construct testable explanation and predictions of a natural phenomena.
  • Scientific Method is a general style of investigation with observing and asking questions.
  • Inferences are a logical interpretation based on what scientists already know.
  • A hypothesis is a tentative scientific explanation 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.
  • Scientific Explanation: Claim + Evidence + Reasoning = Explanation
  • Claim is what do you know?
  • Evidence is how do you know that?
  • Reasoning is why does your evidence support your claim?