BIOSC-101 Lecture Notes - Lecture 1: Macromolecule, Chemical Bond, Homeostasis
9 Sep 2020
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Document Summary
5 distinct qualities used to determine whether or not something is (or was) alive: Be made of materials organized in a hierarchical pattern. Use energy and raw materials to survive. Sense and respond to changing environments and maintain internal stability, or homeostasis. Be part of a pop. that evolves. Cell-is the smallest unit that displays all of these characteristics. Matter can be classified into 2 categories: Abiotic- nonliving and never having been alive. Viruses are considered abiotic because they are unable to reproduce on their own and are not composed of cells. Bacteria being single-celled living organisms are considered biotic. It consists of a dense nucleus surrounded by electrons. Molecule- a chemical structure consisting of at least 2 atoms held together by a chemical bond. Macromolecules- are biologically important molecules that are technically polymers. Polymers are made by combining smaller units called monomers, which are simpler macromolecules.
