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Study Guide #1

by: Rosa Angeles

Study Guide #1 RCO 252-01

Rosa Angeles
GPA 3.2
Introductory Concepts in Biology
Ms. Margaret Hood

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Brief overview of chapters 1-3
Introductory Concepts in Biology
Ms. Margaret Hood
Study Guide
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This 3 page Study Guide was uploaded by Rosa Angeles on Friday September 11, 2015. The Study Guide belongs to RCO 252-01 at University of North Carolina - Greensboro taught by Ms. Margaret Hood in Summer 2015. Since its upload, it has received 70 views.


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Date Created: 09/11/15
Chapte RCO 25201 Introductory Concepts in Biology Professor Ms Margaret Hood Study Guide By Rosa Angeles r 1 Exploring Life and Science Biology is the science of life or study of living organisms All living things are organized acquire materials amp energy are homeostatic respond to stimuli reproduce amp grow and have an evolutionary history Humans have a cultural heritage Humans are members of the biosphere Humans threaten the biosphere Science is limited Science is the knowledge derived from observation and experimentation Scienti c Theory is a concept supported by a broad range of observations experiments and data Cell theory states that all living things are composed of cells Gene theory states that organisms contain coded information that determines their form function and behavior Evolution Theory states that all living things have a common ancestor but each is adapted to a particular way of life A hypothesis is a possible explanation for an observed occurrence or behavior A prediction is a statement of potential outcome based on prior experience or observation Control group is not manipulated experimental is Independent variable is what39s altered dependent variable is what39s measured Chapter 2 Chemistry of Life Matter is anything that occupies space and has mass weight All matter is composed of elements An element39s properties depend on the structure of its atoms Atoms are smallest unit of an element Protons are positive Electrons are negative and Neutrons are neutral Atomic is the of protons Mass is the of protons added with the of neutrons Organic molecules contain Carbon Isotopes are the same type of atom with varying of neutrons A compound is a substance consisting of 2 or more elements combined in a xed ratio The more the potential energy the more farther away electrons are from the nucleus Ionic bonds are when atoms are attracted to each other by opposite charges Charged atom is an ion Covalent bonds occur when atoms share a pair of electrons Molecule is 2 or more atoms held together by covalent bond Polar Covalent does not share equally Nonpolar Covalent shares equally The more electronegative an atom the stronger the pull Hydrogen bonds are weak Covalent bonds are strongest Water is most abundant molecule and sticks by hydrogen bonds Water is liquid at room temp Water molecules are cohesive and adhesive meaning sticky Frozen water is less dense than liquid water Buffers maintain stable pH Carbon is the backbone of biological molecules Macromolecules Carbohydrates Lipids Proteins and Nucleic Acids Monosaccharides are simple sugars Disaccharides are made by joining only 2 monosaccharides Polysaccharides are made up of multiple monosaccharaides Glycogen in animal cells Starch in plant cells Cellulose in plant cell walls Fats are hydrophobic Monomer of carbohydrates monosaccharidea Monomer of protein amino acids Sat fat is solid at room temperature and from animals Unsat fat is liquid at room temperature and from plants Unsat fats have a kink doublebond carbon chain Phospholipids are ambivalent towards water Cells are dynamic DNA stores genetic information Chapter 3 Cell Structure and Function Cells are basic unit of life All living organisms are composed of cells New cells arise from preexisting cells Cells need to be small to work efficiently Plasma membrane is selectively permeable Large molecules need protein carrier to pass through plasma membrane Diffusion is movement from higher to lower concentration Osmosis is the same as diffusion only with water Facilitated Transport is movement low to high needing a protein channel Active transport needs ATP Endocytosis pinches off Exocytosis releases Chromosomes are compressed around proteins Protein synthesis occur at ribosomes Cytoskeleton helps maintain shape of cellular Cilia amp Flagella are involved in movement Mitochondria are the powerhouses of the cell Cellular respiration occurs at mitochondria Glycolysis is anaerobic electron transport chain is aerobic End result of cellular respiration is between 3638 ATP


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