Biology Chapter 1 Study Guide
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Biology Chapter 1 Study Guide

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Questions and Answers

What is the definition of science?

  • An organized way of using evidence to learn about the natural world (correct)
  • A collection of laws and theories
  • A tool used for experimentation
  • An unorganized way of using evidence to learn about the natural world
  • What is observation?

    Process of gathering information about events or processes in a careful, orderly way using the senses

    What is data?

    Information gathered through observation or experimentation.

    What is an inference?

    <p>A logical interpretation based on prior knowledge and experience.</p> Signup and view all the answers

    What is a hypothesis?

    <p>A proposed scientific explanation for a set of observations.</p> Signup and view all the answers

    What is spontaneous generation?

    <p>Hypothesis stating that life could arise from nonliving matter.</p> Signup and view all the answers

    What is a controlled experiment?

    <p>An experiment in which only one variable is manipulated at a time.</p> Signup and view all the answers

    What is an independent variable?

    <p>The one thing that you are changing in the experiment.</p> Signup and view all the answers

    What is a dependent variable?

    <p>A variable that changes in response to a change in the manipulated variable.</p> Signup and view all the answers

    What is a theory?

    <p>A hypothesis that has been tested with a significant amount of data.</p> Signup and view all the answers

    What is biology?

    <p>Science that seeks to understand the living world.</p> Signup and view all the answers

    What is a cell?

    <p>Collection of living matter enclosed by a barrier that separates the cell from its surroundings; basic unit of all forms of life.</p> Signup and view all the answers

    What is sexual reproduction?

    <p>Process by which cells from two different parents unite to produce the first cell of a new organism.</p> Signup and view all the answers

    What is asexual reproduction?

    <p>Process by which a single parent reproduces by itself.</p> Signup and view all the answers

    What is metabolism?

    <p>All of the chemical reactions that occur within an organism.</p> Signup and view all the answers

    What is a stimulus?

    <p>A signal to which an organism responds.</p> Signup and view all the answers

    What is homeostasis?

    <p>Process by which organisms maintain a relatively stable internal environment.</p> Signup and view all the answers

    What is evolution?

    <p>The ability of a group of organisms to change over time for survival in an ever-changing world.</p> Signup and view all the answers

    What is the metric system?

    <p>A decimal system of measurements whose units are based on certain physical standards and are scaled on multiples of 10.</p> Signup and view all the answers

    What is a microscope?

    <p>An instrument that makes small objects look larger.</p> Signup and view all the answers

    What is a compound light microscope?

    <p>Microscope that allows light to pass through a specimen and uses two lenses to form an image.</p> Signup and view all the answers

    What is an electron microscope?

    <p>Microscope that forms an image by focusing beams of electrons onto a specimen.</p> Signup and view all the answers

    What is cell culture?

    <p>Group of cells grown in a nutrient solution from a single original cell.</p> Signup and view all the answers

    What is cell fractionation?

    <p>Technique in which cells are broken into pieces and the different cell parts are separated.</p> Signup and view all the answers

    Study Notes

    Key Terms and Definitions

    • Science: Organized method of using evidence to understand the natural world.
    • Observation: Collecting information about events or processes using the senses in an orderly manner.
    • Data: Information obtained through observation or experimentation.
    • Inference: Logical interpretation derived from prior knowledge or experience.
    • Hypothesis: Proposed scientific explanation for observations.
    • Spontaneous Generation: Hypothesis that life can emerge from nonliving matter.

    Experimental Concepts

    • Controlled Experiment: An experimental setup where only one variable is changed at a time to ensure accurate results.
    • Independent Variable: The variable that is intentionally altered in an experiment.
    • Dependent Variable: The variable that responds to changes in the independent variable.

    Scientific Theories and Biology

    • Theory: A long-tested hypothesis supported by a considerable amount of data.
    • Biology: The branch of science focused on understanding living organisms and their interactions.

    Fundamental Biological Concepts

    • Cell: The basic unit of life, consisting of living matter enclosed by a barrier.
    • Sexual Reproduction: Reproductive process involving the union of cells from two parents, leading to new organisms.
    • Asexual Reproduction: Reproduction involving a single parent, producing offspring identical to the parent.

    Life Processes

    • Metabolism: The entirety of chemical reactions occurring within an organism.
    • Stimulus: Any signal that prompts a response from an organism.
    • Homeostasis: The ability of organisms to maintain stable internal conditions despite changes in the external environment.

    Evolution and Measurement

    • Evolution: The capacity of species to adapt and change over time for survival.
    • Metric System: Measurement system based on multiples of ten, utilizing physical standards.

    Microscopy Techniques

    • Microscope: Tool designed to magnify small objects for detailed inspection.
    • Compound Light Microscope: Utilizes light passing through a specimen with two lenses to magnify.
    • Electron Microscope: Employs focused beams of electrons to create an image of the specimen.

    Cell Analysis Techniques

    • Cell Culture: Process of growing a group of cells from a single original cell in a nutrient-rich solution.
    • Cell Fractionation: Method for breaking cells into smaller parts and separating these components for study.

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    Description

    This quiz features key terms and definitions from Biology Chapter 1. It covers essential concepts such as science, observation, data, and inference, providing a solid foundation for understanding biological methods. Perfect for reviewing before the exam!

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