Biology 171 UH MANOA QUESTIONS &
ANSWERS WITH COMPLETE SOLUTIONS
GRADED A+
QUESTIONS AND ANSWERS
What four structures do all cells have?. ANSWER -cell membrane , ribosomes ,
genetic material , cytoplasm
How does a prokaryotic cell differ from a eukaryotic cell?. ANSWER -Eukaryotic
cells contain membrane-bound organelles, prokaryotic cells do not
What is the cytoskeleton made of?. ANSWER -proteins
What is the order of taxonomy?. ANSWER -Domain, Kingdom, Phylum, Class,
Order, Family, Genus, Species
What are the characteristics of life?. ANSWER -organization, energy processing,
growth and development, evolutionary adaptation, regulation, reproduction, response
to stumulus
What are the three domains?. ANSWER -Bacteria, Archaea, Eukarya
When does a hypothesis become a theory?. ANSWER -when there is consistency in
experiments and data
Where do hydrogen bonds form?. ANSWER -between slightly positive hydrogen
atom and slightly negative atom of a nearby polar covalent molecule
,Do hydrogen bonds form between two different types of molecules, or do they have to
be the same type of molecule?. ANSWER -both
What do ionic bonds form?. ANSWER -ions
What is an ionic bond?. ANSWER -A chemical bond that's formed when an atom
transfers an electron to another Atom
What is a covalent bond?. ANSWER -when two atoms share electrons
What types of covalent bonds are there?. ANSWER -nonpolar and polar
What is a nonpolar covalent bond?. ANSWER -electrons are shared equally (ex H2)
What is a polar covalent bond?. ANSWER -unequal sharing of electrons (ex H2O)
In a polar covalent bond, which atom will have a negative charge?. ANSWER -The
one that carries the shared electron more of the time
What are the emergent properties of water?. ANSWER -cohesive behavior, ability to
moderate temperature, expansion upon freezing (lower density as solid than liquid),
versatility as a solvent
,Where are emergent properties of water found?. ANSWER -In a collection of water
molecules, not just an individual water molecule
Why are water molecules cohesive and adhesive?. ANSWER -because they're polar
What is cohesion?. ANSWER -Attraction between molecules of the same substance
What is adhesion?. ANSWER -An attraction between molecules of different
substances
What does cohesion cause?. ANSWER -surface tension
What is the specific heat of water?. ANSWER -The amount of energy it takes to
increase 1 g of a substance by 1 °C
What has lower density cold water or warm water?. ANSWER -warm water
Hydrophilic. ANSWER -water loving, dissolves in water
Hydrophobic. ANSWER -water fearing, does not dissolve in water
What are acids?. ANSWER -Hydrogen donors, have low pH
What are bases?. ANSWER -H+(Proton) Acceptors, produce OH-ion, high pH
, Buffer. ANSWER -compound that prevents sharp, sudden changes in pH by accepting
OH and H ions
organic chemistry. ANSWER -the study of all chemicals containing carbon
Why is carbon so important?. ANSWER -4 valence electrons means carbon can form
lots of bonds, and a large variety of complex molecules
structural isomers. ANSWER -Differ in the physical arrangement of the atoms
geometric isomers. ANSWER -have the same covalent arrangements but differ in
spatial arrangements (cis and trans)
Enatiomers. ANSWER -Differ in the arrangement of atoms around an asymmetric
carbon
The molecules are mirror images of each other (left/right hand)
Where are the same compounds found on a cis version?. ANSWER -same side
Where are the same compounds found on a trans version?. ANSWER -opposite sides
Which function group behaves as a base?. ANSWER -amimines
ANSWERS WITH COMPLETE SOLUTIONS
GRADED A+
QUESTIONS AND ANSWERS
What four structures do all cells have?. ANSWER -cell membrane , ribosomes ,
genetic material , cytoplasm
How does a prokaryotic cell differ from a eukaryotic cell?. ANSWER -Eukaryotic
cells contain membrane-bound organelles, prokaryotic cells do not
What is the cytoskeleton made of?. ANSWER -proteins
What is the order of taxonomy?. ANSWER -Domain, Kingdom, Phylum, Class,
Order, Family, Genus, Species
What are the characteristics of life?. ANSWER -organization, energy processing,
growth and development, evolutionary adaptation, regulation, reproduction, response
to stumulus
What are the three domains?. ANSWER -Bacteria, Archaea, Eukarya
When does a hypothesis become a theory?. ANSWER -when there is consistency in
experiments and data
Where do hydrogen bonds form?. ANSWER -between slightly positive hydrogen
atom and slightly negative atom of a nearby polar covalent molecule
,Do hydrogen bonds form between two different types of molecules, or do they have to
be the same type of molecule?. ANSWER -both
What do ionic bonds form?. ANSWER -ions
What is an ionic bond?. ANSWER -A chemical bond that's formed when an atom
transfers an electron to another Atom
What is a covalent bond?. ANSWER -when two atoms share electrons
What types of covalent bonds are there?. ANSWER -nonpolar and polar
What is a nonpolar covalent bond?. ANSWER -electrons are shared equally (ex H2)
What is a polar covalent bond?. ANSWER -unequal sharing of electrons (ex H2O)
In a polar covalent bond, which atom will have a negative charge?. ANSWER -The
one that carries the shared electron more of the time
What are the emergent properties of water?. ANSWER -cohesive behavior, ability to
moderate temperature, expansion upon freezing (lower density as solid than liquid),
versatility as a solvent
,Where are emergent properties of water found?. ANSWER -In a collection of water
molecules, not just an individual water molecule
Why are water molecules cohesive and adhesive?. ANSWER -because they're polar
What is cohesion?. ANSWER -Attraction between molecules of the same substance
What is adhesion?. ANSWER -An attraction between molecules of different
substances
What does cohesion cause?. ANSWER -surface tension
What is the specific heat of water?. ANSWER -The amount of energy it takes to
increase 1 g of a substance by 1 °C
What has lower density cold water or warm water?. ANSWER -warm water
Hydrophilic. ANSWER -water loving, dissolves in water
Hydrophobic. ANSWER -water fearing, does not dissolve in water
What are acids?. ANSWER -Hydrogen donors, have low pH
What are bases?. ANSWER -H+(Proton) Acceptors, produce OH-ion, high pH
, Buffer. ANSWER -compound that prevents sharp, sudden changes in pH by accepting
OH and H ions
organic chemistry. ANSWER -the study of all chemicals containing carbon
Why is carbon so important?. ANSWER -4 valence electrons means carbon can form
lots of bonds, and a large variety of complex molecules
structural isomers. ANSWER -Differ in the physical arrangement of the atoms
geometric isomers. ANSWER -have the same covalent arrangements but differ in
spatial arrangements (cis and trans)
Enatiomers. ANSWER -Differ in the arrangement of atoms around an asymmetric
carbon
The molecules are mirror images of each other (left/right hand)
Where are the same compounds found on a cis version?. ANSWER -same side
Where are the same compounds found on a trans version?. ANSWER -opposite sides
Which function group behaves as a base?. ANSWER -amimines
