BIO 1111 FINAL EXAM UPDATED ACTUAL Questions and CORRECT
Answers
Question: What characteristics do living things have? Why is each characteristic important?
Correct Answer: Order: Compartmentalization of functions for increased efficiency and specialty
Response to stimuli: Reaction to environment Reproduction: Ability to have offspring and pass along
genetic material Growth and Development: Increase in size and complexity for cell division Adaptation:
Inherited traits that improve survival or reproduction Homeostasis: Maintaining stable internal conditions
Heredity: What genetic material is given to offspring Energy processing (metabolism): Chemical reactions
that sustain life
Question: How does natural selection work? What are adaptions?
Correct Answer: Natural Selection: Individuals with traits better suited to environment survive and
reproduce more Adaptations: Inherited traits that improve survival or reproduction
Question: What level of organization is relevant to natural selection?
Correct Answer: Natural selection acts on POPULATION because they evolve
Question: What do you need for natural selection to occur
Correct Answer: -Variation -Inheritance Traits -Genes -Reproduction
Question: How does this relate to meiosis?
Correct Answer: Meiosis creates chances at genetic variation with independent assortment and crossing
over
Question: How do chemical properties of molecules influence how they work and interact in living things?
Why is it important if a molecule is polar or nonpolar? What properties do polar molecules have that
influence how they work in or affect living organisms?
Correct Answer: Polarity: Polar is hydrophilic, therefore it wants water close to it (osmosis and diffusion),
and it can also form hydrogen bonds. Non-polar is hydrophobic, there it does not water close to it (moving
molecules across membranes via pushing away). IMPORTANT: Due to strong hydrogen bonding, polar
substances often have high Boling points and heat capacities.
Question: How are properties of water important for life?
Correct Answer: Polar: Uneven charge, so it can dissolve many substances and form hydrogen bonds.
High heat capacity: Resists temperature chance and stabilizes climates/body temperature. Heat of
Vaporization: Takes a lot of heat to evaporate. Solvent: "Universal solvent," as it dissolves ions/polar
molecules Cohesion: Water sticks to water, creating surface tension.. Adhesion: Water sticks to other
surfaces. Density of Ice: Ice floats, solid water is less dense than liquid water.
Question: Carbohydrate (monomer, polymer, bond, examples, role)
Correct Answer: Monomer: Monosaccharide Polymer: Polysaccharide Bond: Glycosidic Examples:
starch, glycogen, cellulose Role: quick energy and structural support
Question: Lipids (components, polymer, bond, examples, role)
Correct Answer: Components: glycerol + fatty acids Polymer: not true polymers Bond: Ester Examples:
fats, oils, phospholipids Role: long-term energy, insulation, cell membranes
Answers
Question: What characteristics do living things have? Why is each characteristic important?
Correct Answer: Order: Compartmentalization of functions for increased efficiency and specialty
Response to stimuli: Reaction to environment Reproduction: Ability to have offspring and pass along
genetic material Growth and Development: Increase in size and complexity for cell division Adaptation:
Inherited traits that improve survival or reproduction Homeostasis: Maintaining stable internal conditions
Heredity: What genetic material is given to offspring Energy processing (metabolism): Chemical reactions
that sustain life
Question: How does natural selection work? What are adaptions?
Correct Answer: Natural Selection: Individuals with traits better suited to environment survive and
reproduce more Adaptations: Inherited traits that improve survival or reproduction
Question: What level of organization is relevant to natural selection?
Correct Answer: Natural selection acts on POPULATION because they evolve
Question: What do you need for natural selection to occur
Correct Answer: -Variation -Inheritance Traits -Genes -Reproduction
Question: How does this relate to meiosis?
Correct Answer: Meiosis creates chances at genetic variation with independent assortment and crossing
over
Question: How do chemical properties of molecules influence how they work and interact in living things?
Why is it important if a molecule is polar or nonpolar? What properties do polar molecules have that
influence how they work in or affect living organisms?
Correct Answer: Polarity: Polar is hydrophilic, therefore it wants water close to it (osmosis and diffusion),
and it can also form hydrogen bonds. Non-polar is hydrophobic, there it does not water close to it (moving
molecules across membranes via pushing away). IMPORTANT: Due to strong hydrogen bonding, polar
substances often have high Boling points and heat capacities.
Question: How are properties of water important for life?
Correct Answer: Polar: Uneven charge, so it can dissolve many substances and form hydrogen bonds.
High heat capacity: Resists temperature chance and stabilizes climates/body temperature. Heat of
Vaporization: Takes a lot of heat to evaporate. Solvent: "Universal solvent," as it dissolves ions/polar
molecules Cohesion: Water sticks to water, creating surface tension.. Adhesion: Water sticks to other
surfaces. Density of Ice: Ice floats, solid water is less dense than liquid water.
Question: Carbohydrate (monomer, polymer, bond, examples, role)
Correct Answer: Monomer: Monosaccharide Polymer: Polysaccharide Bond: Glycosidic Examples:
starch, glycogen, cellulose Role: quick energy and structural support
Question: Lipids (components, polymer, bond, examples, role)
Correct Answer: Components: glycerol + fatty acids Polymer: not true polymers Bond: Ester Examples:
fats, oils, phospholipids Role: long-term energy, insulation, cell membranes
