BIO 200 FINAL EXAM REVIEW QUESTIONS WITH
VERIFIED ANSWERS
What is the name of the covalent bond between two saccharides? - Answers -
glycosidic linkage
Which of the following are possible functions of carbohydrates? (Choose all correct
answers) - Answers - act as a cell identifier, act as structural component, provide
energy and store enrgy
True or False: Long, weak bonds (like those found in non-polar C-H bonds) have higher
potential energy than short, strong bonds (like those found in polar O-H bonds). -
Answers - true
Potential energy stored in the bonds of a molecule is also called - Answers - chemical
energy
In this reaction, how is entropy (S) of the system changing? (the reaction is respiration) -
Answers - it is increasing
Changes in free energy are related to both enthalpy and entropy. Which equation best
represents this? - Answers - deltaG = deltaH-TdeltaS
Adenosine triphosphate (ATP) can be hydrolyzed to become ADP and inorganic
phosphate. It has a deltaG of -7.3 kcal/mol. This reaction... (Choose ALL correct
answers) - Answers - spontaneous, releases energy, is exergonic
Is this statement true or false? If a reaction is spontaneous, then it will always occur
very quickly. - Answers - false
In this reaction, how is enthalpy or potential energy (H) of the molecules changing? ( the
reaction is respiration) - Answers - it is decreasing, it is not releasing heat
Some people cannot eat dairy products because they cannot break down the sugar in
milk products. What is that sugar?
Correct! - Answers - lactose
Often, humans cannot break down milk sugar. Why? - Answers - Often, humans cannot
break down milk sugar. Why?
In what class of biological macromolecules is the enzyme \beta β -galactosidase? -
Answers - protein
, What type(s) of covalent bond(s) stabilize the tertiary structure of proteins? - Answers -
disulfide bridges
What type(s) of non-covalent interaction(s) stabilize the tertiary structure of proteins? -
Answers - ionic bonds, hydrogen bonds, hydrophobic interactions
What two ways do catalysts help with reactions? - Answers - they orientate molecules
precisely, they reduce the activation energy
Which of the following is the best definition of a "transition state" intermediate? -
Answers - it is an unstable (high energy) "mash up" of reactants
We say that ATP hydrolysis (its breakdown) is "coupled" to drive endergonic reactions.
This means... - Answers - A part of ATP must form a chemical bond with another
reactant molecule
What is the job of a ribosome? - Answers - it catalyzes the formation of a polypeptide
using an mRNA template
What is a "point mutation"? - Answers - a single base pair change
What sequence indicates the "beginning" (initiation) of the transcription process? -
Answers - the promoter
What is the role of sigma in bacteria? - Answers - it binds the promoter sequence of a
gene
What is the "+1" site of a gene? - Answers - it is the nucleotide where the first
ribonucleoside triphosphate base pairs with the DNA template strand
What type of bonds hold the growing RNA strand to the DNA template strand? -
Answers - Hydrogen bonds
Which of the following are TRUE? - Answers - adenosine triphosphate (ATP) is a
substrate of RNA polymerase, the first ribonucleotide that hydrogen bonds to the
template strand will be at the 5' end of the completed RNA molecule.
How is a phospholipid considered "amphipathic"? - Answers - it has a hydrophobic end
and a hydrophilic end
Which of the following can affect membrane fluidity and permeability? - Answers -
having saturated vs. unsaturated fatty acid tails, the presence of cholesterol,
temperature
VERIFIED ANSWERS
What is the name of the covalent bond between two saccharides? - Answers -
glycosidic linkage
Which of the following are possible functions of carbohydrates? (Choose all correct
answers) - Answers - act as a cell identifier, act as structural component, provide
energy and store enrgy
True or False: Long, weak bonds (like those found in non-polar C-H bonds) have higher
potential energy than short, strong bonds (like those found in polar O-H bonds). -
Answers - true
Potential energy stored in the bonds of a molecule is also called - Answers - chemical
energy
In this reaction, how is entropy (S) of the system changing? (the reaction is respiration) -
Answers - it is increasing
Changes in free energy are related to both enthalpy and entropy. Which equation best
represents this? - Answers - deltaG = deltaH-TdeltaS
Adenosine triphosphate (ATP) can be hydrolyzed to become ADP and inorganic
phosphate. It has a deltaG of -7.3 kcal/mol. This reaction... (Choose ALL correct
answers) - Answers - spontaneous, releases energy, is exergonic
Is this statement true or false? If a reaction is spontaneous, then it will always occur
very quickly. - Answers - false
In this reaction, how is enthalpy or potential energy (H) of the molecules changing? ( the
reaction is respiration) - Answers - it is decreasing, it is not releasing heat
Some people cannot eat dairy products because they cannot break down the sugar in
milk products. What is that sugar?
Correct! - Answers - lactose
Often, humans cannot break down milk sugar. Why? - Answers - Often, humans cannot
break down milk sugar. Why?
In what class of biological macromolecules is the enzyme \beta β -galactosidase? -
Answers - protein
, What type(s) of covalent bond(s) stabilize the tertiary structure of proteins? - Answers -
disulfide bridges
What type(s) of non-covalent interaction(s) stabilize the tertiary structure of proteins? -
Answers - ionic bonds, hydrogen bonds, hydrophobic interactions
What two ways do catalysts help with reactions? - Answers - they orientate molecules
precisely, they reduce the activation energy
Which of the following is the best definition of a "transition state" intermediate? -
Answers - it is an unstable (high energy) "mash up" of reactants
We say that ATP hydrolysis (its breakdown) is "coupled" to drive endergonic reactions.
This means... - Answers - A part of ATP must form a chemical bond with another
reactant molecule
What is the job of a ribosome? - Answers - it catalyzes the formation of a polypeptide
using an mRNA template
What is a "point mutation"? - Answers - a single base pair change
What sequence indicates the "beginning" (initiation) of the transcription process? -
Answers - the promoter
What is the role of sigma in bacteria? - Answers - it binds the promoter sequence of a
gene
What is the "+1" site of a gene? - Answers - it is the nucleotide where the first
ribonucleoside triphosphate base pairs with the DNA template strand
What type of bonds hold the growing RNA strand to the DNA template strand? -
Answers - Hydrogen bonds
Which of the following are TRUE? - Answers - adenosine triphosphate (ATP) is a
substrate of RNA polymerase, the first ribonucleotide that hydrogen bonds to the
template strand will be at the 5' end of the completed RNA molecule.
How is a phospholipid considered "amphipathic"? - Answers - it has a hydrophobic end
and a hydrophilic end
Which of the following can affect membrane fluidity and permeability? - Answers -
having saturated vs. unsaturated fatty acid tails, the presence of cholesterol,
temperature
