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Introduction to Biology I: Week 1

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by: Elizabeth Schnarr

Introduction to Biology I: Week 1 BIOL 107-06

Marketplace > Truman State University > Biology > BIOL 107-06 > Introduction to Biology I Week 1
Elizabeth Schnarr
Truman State
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About this Document

These notes cover the first week of class lecture. There are two lectures: a biology one and the beginning of the chemistry lecture. The biology covers subjects like what properties must something ...
Introduction to Biology I
Daniela Ostrowski
Class Notes
Biology, Bio, Chem, Chemistry, Introductiontobiology, truman, trumanstateuniversity




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This 3 page Class Notes was uploaded by Elizabeth Schnarr on Wednesday August 24, 2016. The Class Notes belongs to BIOL 107-06 at Truman State University taught by Daniela Ostrowski in Fall 2016. Since its upload, it has received 42 views. For similar materials see Introduction to Biology I in Biology at Truman State University.


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Date Created: 08/24/16
Week 1: 8/23­ 8/29  Biology  Lecture 1: Biology      Q: What is life?  A: They…  1) Acquire and use energy  2) Are made up of one or more cells  3) Process information  4) Are capable of replication  5) Are a product of revolution    Levels of Life    Biosphere → Ecosystem → Community → Population → Organism → Organ →  Tissue → Cell → Organelle → Molecule    ● Taxonomy­ science of classification        Prokaryotes  Eukaryotes  Before nucleus  True nucleus  Smaller, simpler  Bigger  Ex: bacteria  Ex: plants, animals, fungi, etc.    Domains    Bacteria, Archaea, Eukaryotes (have 4 kingdoms)    EVERY LIVING ORGANISM HAS DNA  DNA → RNA → Proteins    Week 1: 8/23­ 8/29  Classification    Kingdom → Phylum → Class → Order → Family → Genus → Species    ● Tree of Life­ a family tree that describes the relationship among species      rRNA is comprised of four chemical units (A, U, C, and G) caled ribonucleotides    Evolution Theory    ● Changes in the characteristics of a population (group of individuals) over time      2 conditions must be met for natural selection:    1. Individuals must vary in characteristics that are heritable   2. In a certain environment versions of traits help individuals reproduce more    ● Humans use artificial selection to interfere and select individuals that will produce  the most offspring    Hypothesis    ● Tentative answer to well­reasoned question:     1. Testable­ checks validity  2. Falsifiable­ would reveal if hypothesis isn’t true (“null hypothesis”)  3. Must be written as a declarative statement                    Week 1: 8/23­ 8/29      Biology  Lecture 2: Chemistry    Definitions:    ● Matter­ anything that occupies space and has mass  ● Elements­ cannot be broken down into any simpler substance during an ordinary  chemical reaction  ● Compound­ substance consisting of two or more different elements    Atoms    ● Nucleus­ center composed of protons (p+) and neutrons (n0)   ● Electrons­ negatively charged particles (e­) orbiting an atom’s nucleus    Oxygen, Carbon, Hydrogen, and Nitrogen make up 96% of elements in the human body    4      ← Mass number Mass number= number of protons and neutrons  2He​   ← Atomic number  ​tomic number= number of protons  ● Isotopes­ atoms of the same element but different number of neutrons             


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