Chemical Composition of Living Things

Chemical Composition of Living Things -...

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UNIVERSITY OF ASIA AND THE PACIFIC   1 ST  SEMESTER COLLEGE OF ARTS AND SCIENCES BIOLOGY LECTURE (CAS 403) Topic:  CHEMICAL COMPOSITION OF LIVING THINGS THOMAS EISNER     * studied Chemical language of nature * Pioneered CHEMICAL ECOLOGY 1. “stay away” – defense mechanism 2. “come and mate me” – reproduction mechanism * studies how insects communicate via chemical messages prey – victim ; predator – consumer chemicals that signals between organisms The emergence of biological function starts at the chemical level - everything an organism is and does depend on chemistry - life is composed of matter - matter is composed of chemical elements - about 25 different chemical elements are essential to life CHEMICAL ELEMENTS     - is a chemical substance that cannot be broken down to other substances  - by ordinary chemical means  - is a substance that cannot be broken down into anything simpler
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Chemical Composition of Living Things -...

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