What is the definition of biology

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What is the definition of biology?
The study of Life
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What can be studied in Biology?
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How do we study biology?

• ASK QUESTIONS
• DO THE RESEARCH

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Max Perutz (Nobel Prize winner) said it this
wayA discovery is like falling in love and
reaching the top of a mountain after a hard climb
all in one, an ecstasy induced not by drugs but
by the revelation of a face of nature that no one
has seen before.
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Two kinds of research

• Discovery based research
• See something new under a microscope
• Identify a new gene
• Hypothesis driven research
• Educated guess

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The Scientific process
To answer a question, scientists have to

• ASK QUESTIONS/MAKE GUESSES
• RUN EXPERIMENTS
• ANSWER?
• SHARE THE WEALTH
• ASK QUESTIONS/MAKE GUESSES

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ASK QUESTIONS/MAKE GUESSES
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ASK QUESTIONS/MAKE GUESSES

• What dont you know?
• Discovery question the unknown
• Hypothesis driven Make a prediction
• Reflects history
• Test the hypothesis

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RUN THE EXPERIMENT

• Need a control
• One variable
• Repeatable

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ANSWER and SHARE

• WRITING
• Publications
• VISUAL
• Posters
• VERBAL
• Presentations
• Teach!

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The Scientific process

• To answer a question scientists have to
• ASK QUESTIONS/MAKE GUESSES
• RUN EXPERIMENTS
• ANSWER?
• SHARE THE WEALTH
• ASK QUESTIONS/MAKE GUESSES

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Lets design a hypothesis
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The effects of science

• Research world
• Medical world
• Agricultural world
• Political world
• Legal world
• Ethical world
• Personal world

Lewis Thomas said Science is useful,
indispensable sometimes, but whenever it moves
forward it does so by producing a surprise you
cannot specify the surprise youd like.
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WHAT HAVE WE LEARNED SO FAR?
Science to know
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Who are we?
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Who are we?

• We need structure
• We need to reproduce
• We need to grow and develop
• We need energy
• We need to interact with the environment

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We need structure
Tissue
Cell
Structure gives us function!
Organ
Organelle
Molecule
Organism
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We need to reproduce
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We need to grow and develop
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We need energy
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We interact with the environment
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What we will study

• We need structure
• Molecular structure Cell
• We need to reproduce
• Genetics
• We need to grow and develop
• Cell growth/replication
• We need energy
• Cell metabolism
• We need to interact with the environment
• Cell sensing/membrane interactions
• Regulation

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Who are we? Underlying theme How are we
different?
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How are we the same?

• Same basic molecular make-up (atoms, compounds,
  macromolecules, etc)
• Same genetic codeDNA
• Similar genes?proteins
• Similar cell structure

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How are we different?Evolution

• Simple ? Complex organisms
• More genes ? More proteins ? More enzymes
• Different genes ? Different proteins ? Different
  enzymes
• More and different organelles ? more and
  different cells ? more and different tissue ?
  more and different organs

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Who are we?

• We need structure
• We need to reproduce
• We need to grow and develop
• We need energy
• We need to interact with the environment

Underlying theme Evolution has created diversity
WEALL ORGANISMS