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What is Biology?

What is Biology?. Biology is the study of life. How do we define LIFE?. Characteristics of Life All living things:. Consume material (food) needed for energy production. Excrete waste products. Are composed of at least 1 or more cells. Are capable of growth. Are capable of reproduction.

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What is Biology?

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  1. What is Biology?

  2. Biology is the study of life. • How do we define LIFE?

  3. Characteristics of LifeAll living things: • Consume material (food) needed for energy production. • Excrete waste products. • Are composed of at least 1 or more cells. • Are capable of growth. • Are capable of reproduction. • React to stimuli • Are capable of metabolism. • Are capable of some sort of movement. • Eventually cease to exist (die)

  4. What do you know about…. • …the most important event in your life is Gastrulation • "It is not birth, marriage, or death, but gastrulation, which is truly the most important time in your life." Lewis Wolpert (1986)

  5. So you think you know…. • Asexual vs Sexual Asexual: no sex cells (gametes) Sexual: involves sex cells (sperm and egg) Sperm + Egg = Zygote 23 + 23 = 46 n + n = 2n Haploid Diploid

  6. Do you know anything about…? • Cloning • Stem cells • Identical twins • Fraternal twins • Genetic Engineering

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