Biology Chapter 1 Flashcards
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Biology Chapter 1 Flashcards

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Questions and Answers

What is biology?

The scientific study of life.

Which of the following are properties associated with life? (Select all that apply)

  • Invisibility
  • Reproduction (correct)
  • Energy processing (correct)
  • Order (correct)
  • What is a biosphere?

    All of the environments on Earth that support life.

    What is an ecosystem?

    <p>An environment that consists of all the organisms living in a particular area, along with physical components like air, soil, water, and sunlight.</p> Signup and view all the answers

    What is a community?

    <p>The entire array of organisms in an ecosystem.</p> Signup and view all the answers

    What is a population?

    <p>All the individuals of a particular species living in an area.</p> Signup and view all the answers

    What is an organism?

    <p>An individual living thing.</p> Signup and view all the answers

    What is an organ system?

    <p>A system that consists of several organs cooperating in a specific function.</p> Signup and view all the answers

    What is a cell?

    <p>The fundamental unit of life.</p> Signup and view all the answers

    What is an organelle?

    <p>A membrane-enclosed structure that performs a specific function in a cell.</p> Signup and view all the answers

    What is a molecule?

    <p>A cluster of small chemical units called atoms held together by chemical bonds.</p> Signup and view all the answers

    Life's hierarchy of organization from largest to smallest is: Biosphere, ecosystem, community, population, organism, organ system, organ, tissue, _____, organelle, molecule.

    <p>cell</p> Signup and view all the answers

    What are prokaryotic cells?

    <p>A type of cell lacking a membrane-enclosed nucleus and other membrane-enclosed organelles; found only in bacteria and archaea.</p> Signup and view all the answers

    What are eukaryotic cells?

    <p>A type of cell that has a membrane-enclosed nucleus and other membrane-enclosed organelles.</p> Signup and view all the answers

    What are genes?

    <p>The units of inheritance that transmit information from parents to offspring.</p> Signup and view all the answers

    What are the three domains of life?

    <p>Bacteria, Archaea, Eukarya.</p> Signup and view all the answers

    What is evolution?

    <p>Descent with modification; living species are descendants of ancestral species that were different from present-day ones.</p> Signup and view all the answers

    What is natural selection?

    <p>A process in which individuals with certain inherited traits are more likely to survive and reproduce.</p> Signup and view all the answers

    What is inductive reasoning?

    <p>A type of logic in which generalizations are based on a large number of specific observations.</p> Signup and view all the answers

    What is a hypothesis?

    <p>A testable explanation for a set of observations based on the available data.</p> Signup and view all the answers

    What is deductive reasoning?

    <p>A type of logic in which specific results are predicted from a general premise.</p> Signup and view all the answers

    What is a theory?

    <p>A widely accepted explanatory idea that is broader in scope than a hypothesis and is supported by a large body of evidence.</p> Signup and view all the answers

    What is a controlled experiment?

    <p>An experiment comparing an experimental group with a control group that varies only in the factor being tested.</p> Signup and view all the answers

    What are emergent properties?

    <p>New properties that arise with each step upward in the hierarchy of life.</p> Signup and view all the answers

    Study Notes

    Biology Overview

    • Biology studies life and its processes, examining how living organisms interact with each other and their environments.

    Seven Properties of Life

    • Life is characterized by seven properties:
      • Order: Structured complexity.
      • Reproduction: Ability to produce new organisms.
      • Growth and Development: Changes over time.
      • Energy Processing: Utilization of energy and resources.
      • Response to Environment: Adaptations to stimuli.
      • Regulation: Homeostasis and internal balance.
      • Evolutionary Adaptation: Changes in populations over generations.

    Levels of Biological Organization

    • Biosphere: All regions of Earth that support life.
    • Ecosystem: Community of organisms and their physical environment.
    • Community: All species living together in an area.
    • Population: Individuals of a species in a specific location.
    • Organism: A single, individual living entity.
    • Organ System: Group of organs working together (e.g., circulatory).
    • Organ: Functional structures made of tissues.
    • Tissue: Group of similar cells performing a specific function.
    • Cell: Basic unit of life.
    • Organelle: Membrane-bound structures within a cell.
    • Molecule: Chemical structures made from atoms.

    Cellular Types

    • Prokaryotic Cells: Simple cells without a nucleus; found in bacteria and archaea.
    • Eukaryotic Cells: Complex cells with a nucleus; all organisms except bacteria and archaea.

    Genetics and Evolution

    • Genes: Units of heredity that carry traits from parents to offspring.
    • Three Domains of Life: Consist of Bacteria, Archaea, and Eukarya.
    • Evolution: Descent with modification where species change over time.
    • Natural Selection: Process favoring individuals with advantageous traits for survival and reproduction.

    Scientific Reasoning

    • Inductive Reasoning: Formulating generalizations based on observations.
    • Hypothesis: A testable explanation constructed from observations.
    • Deductive Reasoning: Predicting specific outcomes based on general principles.
    • Theory: A broadly accepted explanation supported by substantial evidence, capable of generating further hypotheses.

    Experimental Methods

    • Controlled Experiment: Compares an experimental group to a control group differing only by the variable being tested.
    • Emergent Properties: New characteristics that arise as complexity increases in the biological hierarchy, reflecting the interactions of component parts.

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    Description

    Test your knowledge with these flashcards covering the basics of biology. Learn key terms and definitions that form the foundation of biological science, including concepts like the biosphere and the properties of life. Perfect for students looking to reinforce their understanding of Chapter 1.

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