Skip to main content
Indietro

Themes of Biology and Scientific Method

I pulsanti di controllo sono stati cambiati in modalità "navigazione".
1/20
  • What is Biology?

    Biology is the study of life and living organisms.

  • List the six characteristics of living things.

    Order, Grow/Develop, Respond/Adapt, Evolve, Process Energy, Reproduce.

  • What is the Cell Theory?

    All living things are made of cells, cells are the basic unit of life, and all cells come from pre-existing cells.

  • Difference between Prokaryotic and Eukaryotic cells?

    Prokaryotes lack a nucleus and membrane-bound organelles; Eukaryotes have a nucleus and membrane-bound organelles.

  • What is the organization hierarchy in living things?

    Chemical level, Cells, Tissues, Organs/Systems, Organisms, Populations, Communities, Ecosystems, Biosphere.

  • Define an ecosystem.

    A defined area including all living and non-living components interacting together.

  • What is evolution's role in biology?

    Evolution explains the unity and diversity of life by changes in species over time.

  • What is taxonomy?

    The classification of living things into groups based on similarities, organized from broad to specific.

  • What is the binomial system of naming?

    Scientific names use two words: the first is the genus, the second is the species (e.g., Homo sapiens).

  • Why use scientific names?

    To provide a universal, standardized naming system that avoids confusion.

  • What is a hypothesis?

    A testable prediction or explanation that begins a scientific study.

  • Define independent variable in an experiment.

    The variable that is changed or tested to observe its effect.

  • Define dependent variable in an experiment.

    The variable that is measured or observed as a result of changes in the independent variable.

  • What are controlled variables?

    All other factors kept constant to ensure a fair test between control and experimental groups.

  • Difference between control group and experimental group?

    Control group lacks the independent variable; experimental group includes it.

  • What is a scientific theory?

    An explanation supported by overwhelming scientific evidence explaining observed facts.

  • What is a scientific law?

    An observation describing what happens and predicting future events under certain conditions.

  • What was Louis Pasteur's contribution to biology?

    He disproved spontaneous generation and developed pasteurization to kill contaminants without altering substances.

  • What is pasteurization?

    The process of heating a substance enough to kill harmful microbes without changing its properties.

  • What is the importance of controlled experiments?

    They allow testing one variable at a time to determine cause and effect accurately.