AP BIOLOGY EXAM #1 QUESTIONS AND
ANSWERS
Testosterone and estradiol are male and female sex hormones respectively in many
vertebrates. In what way(s) do these molecules differ from each other?
a.) testosterone and estradiol are structural isomers but have the same molecular
formula
b.)testosterone and estradiol are geometric isomers burt have the same molecular
formula
c.) testosterone and estriol have different functional groups attached to the same carbon
skeleton
d.) testosterone and estradiol have distinctly different chemical structures, with one
including four fused rings of carbon atoms, while the other has three rings - Answer-c.)
testosterone and estriol have different functional groups attached to the same carbon
skeleton
Which of the following best describes the relationship between the atoms described
below?
Atom 1 Atom 2
31p 32p
15 15
a.) they are both phosphorus cations
b.) they are both phosphorus anions
c.) they are both isotopes of phosphorus
d.) they are both isomer of phosphorus - Answer-c.) they are both isotopes of
phosphorus
Which of the following is an example of hydrolysis chemical reaction?
a.) the reaction of two monosaccharides, forming a disaccharide with the release of
water
b.) the synthesis of two amino acids, forming a peptide with the release of water
c.) the reaction of a fat, forming glycerol and three fatty acids with the utilization of water
d.) the reduction of a fat, forming glycerol and three fatty acids with the utilization of
water - Answer-d.) the reduction of a fat, forming glycerol and three fatty acids with the
utilization of water
Water has a high specific heat that allows a body of water to absorb a great deal of
energy from the sun during the day and slowly release the heat into the air at night. This
property of water allows the climate of nearby areas to be moderated from extreme
changes. This of water is caused by:
, a.) the absorption and release of heat when hydrogen bonds break and form between
different molecules of water
b.) the high specific heat of oxygen and hydrogen atoms that make up a water molecule
c.) the small size of the water molecules which allows them to vibrate very rapidly.
d.) the fact that water is a poor heat conductor so it takes a much longer time for the
heat to be transferred - Answer-a.) the absorption and release of heat when hydrogen
bonds break and form between different molecules of water
Each element is unique and different from other elements because of number of protons
in the nuclei of its atoms. which of the following is the term indicates the number of
protons in an atom's nucleus of its atoms. Which of the following is the term that
indicates the number of protons in an atom's nucleus ?
a.) atomic mass
b.) atomic weight
c.) atomic number
d.) mass weight - Answer-c.) atomic number
A controlled experiment is the goal of a science researcher and must be carefully
planned. One of the characteristics of a controlled experiment is that it has which of the
following?
a.) it proceeds slowly enough that a scientist can make careful records of the results
and record them in their Excel Spreadsheet
b.) the experiment may include several experimental groups, but it also has a control
group that is different from the experimental groups by a single variable
c.) is repeated many times to make sure the results are accurate
d.) it has a dependent variable that occurs with regular intervals on the graph axis -
Answer-b.) the experiment may include several experimental groups, but it also has a
control group that is different from the experimental groups by a single variable
What is the term used for a protein molecule complex found in cells that assists in the
proper folding of other proteins when they have been damaged by by excessive heat
and pH?
a.) chaperon protein
b.) tertiary protein
c.) enzyme protein
d.) renaturing protein - Answer-a.) chaperon protein
Which of the following statements is true about a solution that is buffered?
a.) They maintain a constant pH when bases are added to them but not when acids are
added to them
b.) They maintain a constant pH when acids are added to them but not when bases are
added to them
ANSWERS
Testosterone and estradiol are male and female sex hormones respectively in many
vertebrates. In what way(s) do these molecules differ from each other?
a.) testosterone and estradiol are structural isomers but have the same molecular
formula
b.)testosterone and estradiol are geometric isomers burt have the same molecular
formula
c.) testosterone and estriol have different functional groups attached to the same carbon
skeleton
d.) testosterone and estradiol have distinctly different chemical structures, with one
including four fused rings of carbon atoms, while the other has three rings - Answer-c.)
testosterone and estriol have different functional groups attached to the same carbon
skeleton
Which of the following best describes the relationship between the atoms described
below?
Atom 1 Atom 2
31p 32p
15 15
a.) they are both phosphorus cations
b.) they are both phosphorus anions
c.) they are both isotopes of phosphorus
d.) they are both isomer of phosphorus - Answer-c.) they are both isotopes of
phosphorus
Which of the following is an example of hydrolysis chemical reaction?
a.) the reaction of two monosaccharides, forming a disaccharide with the release of
water
b.) the synthesis of two amino acids, forming a peptide with the release of water
c.) the reaction of a fat, forming glycerol and three fatty acids with the utilization of water
d.) the reduction of a fat, forming glycerol and three fatty acids with the utilization of
water - Answer-d.) the reduction of a fat, forming glycerol and three fatty acids with the
utilization of water
Water has a high specific heat that allows a body of water to absorb a great deal of
energy from the sun during the day and slowly release the heat into the air at night. This
property of water allows the climate of nearby areas to be moderated from extreme
changes. This of water is caused by:
, a.) the absorption and release of heat when hydrogen bonds break and form between
different molecules of water
b.) the high specific heat of oxygen and hydrogen atoms that make up a water molecule
c.) the small size of the water molecules which allows them to vibrate very rapidly.
d.) the fact that water is a poor heat conductor so it takes a much longer time for the
heat to be transferred - Answer-a.) the absorption and release of heat when hydrogen
bonds break and form between different molecules of water
Each element is unique and different from other elements because of number of protons
in the nuclei of its atoms. which of the following is the term indicates the number of
protons in an atom's nucleus of its atoms. Which of the following is the term that
indicates the number of protons in an atom's nucleus ?
a.) atomic mass
b.) atomic weight
c.) atomic number
d.) mass weight - Answer-c.) atomic number
A controlled experiment is the goal of a science researcher and must be carefully
planned. One of the characteristics of a controlled experiment is that it has which of the
following?
a.) it proceeds slowly enough that a scientist can make careful records of the results
and record them in their Excel Spreadsheet
b.) the experiment may include several experimental groups, but it also has a control
group that is different from the experimental groups by a single variable
c.) is repeated many times to make sure the results are accurate
d.) it has a dependent variable that occurs with regular intervals on the graph axis -
Answer-b.) the experiment may include several experimental groups, but it also has a
control group that is different from the experimental groups by a single variable
What is the term used for a protein molecule complex found in cells that assists in the
proper folding of other proteins when they have been damaged by by excessive heat
and pH?
a.) chaperon protein
b.) tertiary protein
c.) enzyme protein
d.) renaturing protein - Answer-a.) chaperon protein
Which of the following statements is true about a solution that is buffered?
a.) They maintain a constant pH when bases are added to them but not when acids are
added to them
b.) They maintain a constant pH when acids are added to them but not when bases are
added to them
