Introduction to Biology

					   Honors Biology – 8/31
      I. Catalyst & Homework Check
       II. Is it alive? – Demonstration
    III. Notes – Characteristics of Life
IV.Think-Pair-Share: The interdependency
           of the themes of biology
V. Homework: Study Guide #1-7, read pgs.
     14-20 and define 1st 20 key terms in
                 your glossary
    VI. Objective #1 Mastery QUIZ 9/2
Catalyst – 5 minutes
(on the top of your left hand notes page)

• List at least 10 pieces of evidence you can
  use to determine whether or not
  something is living or non-living.
Introduction to
    Biology
    Chapter 1
   Objective #1
            What is Biology?
• Biology is the study of living things, of
  ourselves, and of the living world.

  – Scientists use biological principles to solve
    real-world problems.
     • Preserving the environment
     • Improving the food supply
     • Understanding the human genome
     • Fighting disease
       Characteristics of Living Things
• All living things are characterized by
  the following items:
  1.   Cellular Organization
  2.   Reproduction
  3.   Metabolism
  4.   Homeostasis (Responsiveness)
  5.   Heredity
  6.   Growth & Development
  7.   Evolutionary adaptation
          Cellular Organization
• All living things are
  made up of a cell(s)
  – Cells are the building
    blocks of life!
  – All living things are
    made of one or more
    cells
  – Cells can be highly
    specialized
              Reproduction
• The process by which
 organisms make more
 of their own kind
  – Can be sexual or
    asexual
  – All species have a life
    cycle
• Why Sex?
              Metabolism
• Metabolism: Physical and chemical
 changes in an organism in which energy
 is released or used.

  – Living things use energy to grow, move,
    heal, reproduce, maintain balance
• How does this demonstrate
 metabolism? Describe the pathway.
             Homeostasis
• Homeostasis: The tendency to maintain
 stability in an organism amid
 environmental change.
  – Living things must maintain a relatively
    stable internal environment to survive
  – Living things must respond to their
    environment
• How does this demonstrate the principle
 of homeostasis?
                  Heredity
• Heredity: the transmission of characteristics
  from parent to offspring by means of genes
  on the chromosomes (DNA)
  – Occurs during reproduction
  – DNA is the recipe for life!
• Genes direct growth & development
• Heredity & common ancestry
   Growth & Development
• All living things have a life cycle.
  They grow/develop, usually
  reproduce, and die.
    Evolutionary Adaptation
• Evolution – the change of
  heritable traits in a species
  over time
  – Mutation drives evolution
  – Natural selection – organisms
    with favorable traits are more
    likely to survive and reproduce
• How would you narrate the
  following clip to explain how it
  demonstrates this principle?
            Other Options?
• Movement?
• Sensitivity?

• Development?
• Complexity?

• Death?
                   Summary
• This goes at the end of your notes
• Identify any 2 of the principles of life
    discussed in class today that you believe
    are most closely interdependent. Explain
    the relationship between them.

• HOMEWORK: Study Guide #1-7, read pgs.
    14-20 and list key terms in glossary
•   QUIZ – Obj. #1 – NEXT CLASS

				
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