Bio 211 Exam 1 study guide with Complete
Solutions (2024/2025)
Characteristics of Life - ✔️✔️Living things:
-are organized
-need energy and materials
-maintain homeostasis
-respond to stimuli (changes in environment)
-reproduce and grow
-have adaptations
matter - ✔️✔️Anything that has mass and takes up space
element - ✔️✔️A substance that cannot be broken down into substances with different
properties
atomic number - ✔️✔️=number of protons
atomic mass - ✔️✔️=protons (which are = to electrons) + neutrons
mass number - ✔️✔️equal to the sum of the number of protons and neutrons in atom's nucleus.
What 6 elements that make up 95% of body weight - ✔️✔️CHNOPS:
Carbon
Hydrogen
Nitrogen
Oxygen
Phosphorus
Sulfur
properties of water that make it important to life - ✔️✔️Has high heat capacity
High heat of vaporization
good solvent
Natural selection - ✔️✔️survival of the fittest
Charles Darwin - ✔️✔️Theory of evolution
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taxonomy - ✔️✔️The scientific study of how living things are classified
systematic's - ✔️✔️classifying organisms in regard to their natural relationships
cohesion - ✔️✔️the ability of water molecules to cling to each other due to hydrogen bonding.
adhesion - ✔️✔️the ability of water molecules to cling to other polar surfaces.
pH - ✔️✔️the measure of Hydrogen ion concentration in a solution
acid - ✔️✔️substances that dissociate in water releasing hydrogen
base - ✔️✔️substances that either take up hydrogen ions (H+) or release hydroxide ions (OH-)
buffer - ✔️✔️a chemical(s) that keeps PH with in normal limits
monomer with example - ✔️✔️molecule that can be bonded to other identical molecules to
form a polymer. EX: Glucose
polymer with example - ✔️✔️very large molecule made up of many monomers
enzymes - ✔️✔️speed up chemical reactions
8 levels of classification - ✔️✔️Domain, Kingdom, Phylum, Class, order, Family, Genus,
Species
3 domains and give an example of each - ✔️✔️Domain Archaea- Euryarchaeota
Domain Bacteria- Thermus
Domain Eukarya- Animal
correctly identify the proper way to write the scientific names (binomial nomenclature) -
✔️✔️Use both genus and species name
Italicize the whole name.
Capitalize only the genus name.
(Genus species)
pH scale, acids and bases (with regard to H+) - ✔️✔️0-7=acidic
7=neutral
7-14=basic or alkaline
4 classes of biomolecules and examples - ✔️✔️-Carbohydrates(glucose, sugars)
-Lipids(oils,fats)
-Proteins(protein z)
-Nucleic Acids(cytosine, guanine, thymine, uracil, and adenine)(DNA)
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