Biol 1001 Kessler final 2020
QUESTIONS AND 100% VERIFIED
CORRECT ANSWERS/ GRADED A+
Which of the following is not a polymer of glucose monomers
a). Cellulose
b). Ribose
c). Starch
d). Glycogen
e). All of the above are glucose polymers - Correct Answerb). Ribose
Spot the odd one out! Some key properties of water are listed below. Which of the
following is a property of water that is not due to its ability to hydrogen bond?
a). High specific heat
b). Adhesion
c). Surface tension
d). Pure water can ionize to OH- and H+
e). All of these properties result from waters ability to hydrogen bond - Correct
Answerd). Pure water can ionize to OH- and H+
Of the following amino acid R-groups, which is most likely to be hydrophobic?
a. a
b. b
c. c
d. d
e. e - Correct Answere
If a gene contains 18% cytosine, how much adenine will it contain?
a). 36%
b). 32%
c). 18%
d). 64%
e). Not enough information to answer - Correct Answerb). 32%
Multiple independent experiments have demonstrated that phytochrome helps trigger
seasonal change responses in plants, such as changing color and loosening of leaves
in fall. Furthermore, plants change their flowering patterns in response to changes in
day length and alter the expression of proteins at the molecular level depending on day
length and temperature.
Thus, plants have evolved the ability to adapt to changes in their surroundings.
The bolded statement is an example of what?
a). An observation
b). A theory
c). A prediction
,d). An experiment
e). A hypothesis - Correct Answerb). A theory
If a strand of DNA has the sequence 3' - GACCTATG - 5', then what would be the
sequence of the complementary strand?
a). 5' - CTGGATAC - 3'
b). 5' - GTATCCAG - 3'
c). 3' - CTGGATAC - 5'
d). 5' - CUGGAUAC - 3'
e). 3' - GACCTATG - 5' - Correct Answera). 5' - CTGGATAC - 3'
What type of bond links two monosaccharides in a disaccharide such as sucrose?
a). Peptide
b). Covalent
c). Hydrogen
d). Glycosidic
e). Both B & D - Correct Answere). Both B & D
The image shows a Bohr model of an atom. Say this is a model of an ion with a +2
charge. How many protons are in the nucleus of this atom?
a). 12
b). 11
c). 10
d). 9
e). 8 - Correct Answera). 12
Explain what is meant by the term "polarity" when referring to both polypeptides and
nucleic acids - Correct Answer
Explain the relationship between proteins, DNA and RNA in the process of gene
expression (3 points). What might happen to a protein if there is a mutation in the
corresponding DNA sequence - Correct AnswerDNA stores information (in genes) to
make proteins. RNA is made from a gene in DNA, and this is the intermediate step.
Polypeptides are made from RNA (mRNA). Since DNA stores the information to make a
protein, if there is a mutation in a particular gene, it can cause the insertion of the wrong
amino acid into the protein sequence, and this change can affect protein structure,
properties and its ability to function
Based on what you know about nucleotides, the bonding pair in the image from top left
to bottom right are most likely?
a). C:::G
T::A
b). C:::G
A::T
c). T:::C
A::G
,d). G:::C
T::A - Correct Answera). C:::G
T::A
If two atoms share a pair of electrons, they are said to exist in a molecule with what type
of bond?
a). Hydrogen
b). Polar
c). Ionic
d). Nonpolar
e). Covalent - Correct Answere). Covalent
Would be the pH of a solution if it contained approximately 100x more H+ than blood?
a). pH 1
b). pH 3
c). pH 5
d). pH 7
e). pH 9 - Correct Answerc). pH 5
Which functional groups are important in the joining of nucleotides to make a nucleic
acid?
a). Amino and hydroxyl
b) Carbonyl and carboxyl
c) Carbonyl and phosphate
d) Carboxyl and amino
e) Phosphate and hydroxyl - Correct Answere) Phosphate and hydroxyl
Different triacylglycerols (A, B & C) were tested to determine their melting points. The
graph shows the results of these melting point tests. The fatty acids in A, B, and C each
contain the same number of carbon atoms. Which of the three triacylglycerols contains
the fatty acids that are the most saturated?
a) A
b) B
c) C
d) The number of double bonds in each molecule in each fatty acid needs to be
provided to answer the question.
e) The number of branching side chains in each fatty acid needs to be provided to
answer the question. - Correct Answerb) B
Say you are a researcher and you discover a new antibiotic that blocks peptide bonds
from forming. What type of macromolecule would this antibiotic affect?
a) Proteins
b) Nucleic acids
c) Carbohydrates
d) Lipids - Correct Answera) Proteins
, In water, MgCl2 dissociates into Mg2+ and Cl-. Based on this information what type of
bond is involved in the formation of MgCl2?
a) Non-polar covalent
b) Covalent
c) Ionic
d) Hydrogen - Correct Answerc) Ionic
In a study comparing two different populations, a researcher determines a p-value equal
to 0.003. What does this p-value mean and what should be done with this information?
a) It is very unlikely that the null hypothesis is correct. We should reject the null
hypothesis.
b) It is very likely that the null hypothesis is correct. We should reject the null
hypothesis.
c) It is very unlikely that the null hypothesis is correct. We should accept the null
hypothesis.
d) It is very likely that the null hypothesis is correct. We should accept the null
hypothesis. - Correct Answera) It is very unlikely that the null hypothesis is correct. We
should reject the null hypothesis.
Refer to the diagram of an amino acid shown. Say this was incorporated into a
polypeptide sequence. What kinds of interactions could this amino acid be involved in to
create the tertiary structure of the polypeptide?
a) Van der Waals interactions
b) Ionic bonds
c) Hydrophobic effect
d) A & C are possible
e) All are possible - Correct Answerd) A & C are possible
In lecture we talked about sickle cell anemia, a condition where red blood cells have a
characteristic "sickle" shape because the beta subunits cluster together, and are unable
to efficiently transport oxygen. These effects are a consequence of a mutation in one of
the amino acids found in the sequence of the beta subunit gene. This single amino acid
mutation affects what level(s) of structure in the overall hemoglobin protein?
a) primary
b) tertiary
c) quaternary
d) A & B
e) A & C - Correct Answerd) A & B
Your future self works in a science lab and your intern forgets to label sample tubes!
One tube contains RNA and the other DNA. What feature(s) would help you distinguish
the DNA sample from the RNA? Select all that apply.
a) DNA will have thymine instead of uracil in its nitrogenous bases
b) DNA will have a double-stranded structure
c) DNA will have ribose as the sugar in its backbone
d) DNA will have uracil instead of thymine in its nitrogenous bases
QUESTIONS AND 100% VERIFIED
CORRECT ANSWERS/ GRADED A+
Which of the following is not a polymer of glucose monomers
a). Cellulose
b). Ribose
c). Starch
d). Glycogen
e). All of the above are glucose polymers - Correct Answerb). Ribose
Spot the odd one out! Some key properties of water are listed below. Which of the
following is a property of water that is not due to its ability to hydrogen bond?
a). High specific heat
b). Adhesion
c). Surface tension
d). Pure water can ionize to OH- and H+
e). All of these properties result from waters ability to hydrogen bond - Correct
Answerd). Pure water can ionize to OH- and H+
Of the following amino acid R-groups, which is most likely to be hydrophobic?
a. a
b. b
c. c
d. d
e. e - Correct Answere
If a gene contains 18% cytosine, how much adenine will it contain?
a). 36%
b). 32%
c). 18%
d). 64%
e). Not enough information to answer - Correct Answerb). 32%
Multiple independent experiments have demonstrated that phytochrome helps trigger
seasonal change responses in plants, such as changing color and loosening of leaves
in fall. Furthermore, plants change their flowering patterns in response to changes in
day length and alter the expression of proteins at the molecular level depending on day
length and temperature.
Thus, plants have evolved the ability to adapt to changes in their surroundings.
The bolded statement is an example of what?
a). An observation
b). A theory
c). A prediction
,d). An experiment
e). A hypothesis - Correct Answerb). A theory
If a strand of DNA has the sequence 3' - GACCTATG - 5', then what would be the
sequence of the complementary strand?
a). 5' - CTGGATAC - 3'
b). 5' - GTATCCAG - 3'
c). 3' - CTGGATAC - 5'
d). 5' - CUGGAUAC - 3'
e). 3' - GACCTATG - 5' - Correct Answera). 5' - CTGGATAC - 3'
What type of bond links two monosaccharides in a disaccharide such as sucrose?
a). Peptide
b). Covalent
c). Hydrogen
d). Glycosidic
e). Both B & D - Correct Answere). Both B & D
The image shows a Bohr model of an atom. Say this is a model of an ion with a +2
charge. How many protons are in the nucleus of this atom?
a). 12
b). 11
c). 10
d). 9
e). 8 - Correct Answera). 12
Explain what is meant by the term "polarity" when referring to both polypeptides and
nucleic acids - Correct Answer
Explain the relationship between proteins, DNA and RNA in the process of gene
expression (3 points). What might happen to a protein if there is a mutation in the
corresponding DNA sequence - Correct AnswerDNA stores information (in genes) to
make proteins. RNA is made from a gene in DNA, and this is the intermediate step.
Polypeptides are made from RNA (mRNA). Since DNA stores the information to make a
protein, if there is a mutation in a particular gene, it can cause the insertion of the wrong
amino acid into the protein sequence, and this change can affect protein structure,
properties and its ability to function
Based on what you know about nucleotides, the bonding pair in the image from top left
to bottom right are most likely?
a). C:::G
T::A
b). C:::G
A::T
c). T:::C
A::G
,d). G:::C
T::A - Correct Answera). C:::G
T::A
If two atoms share a pair of electrons, they are said to exist in a molecule with what type
of bond?
a). Hydrogen
b). Polar
c). Ionic
d). Nonpolar
e). Covalent - Correct Answere). Covalent
Would be the pH of a solution if it contained approximately 100x more H+ than blood?
a). pH 1
b). pH 3
c). pH 5
d). pH 7
e). pH 9 - Correct Answerc). pH 5
Which functional groups are important in the joining of nucleotides to make a nucleic
acid?
a). Amino and hydroxyl
b) Carbonyl and carboxyl
c) Carbonyl and phosphate
d) Carboxyl and amino
e) Phosphate and hydroxyl - Correct Answere) Phosphate and hydroxyl
Different triacylglycerols (A, B & C) were tested to determine their melting points. The
graph shows the results of these melting point tests. The fatty acids in A, B, and C each
contain the same number of carbon atoms. Which of the three triacylglycerols contains
the fatty acids that are the most saturated?
a) A
b) B
c) C
d) The number of double bonds in each molecule in each fatty acid needs to be
provided to answer the question.
e) The number of branching side chains in each fatty acid needs to be provided to
answer the question. - Correct Answerb) B
Say you are a researcher and you discover a new antibiotic that blocks peptide bonds
from forming. What type of macromolecule would this antibiotic affect?
a) Proteins
b) Nucleic acids
c) Carbohydrates
d) Lipids - Correct Answera) Proteins
, In water, MgCl2 dissociates into Mg2+ and Cl-. Based on this information what type of
bond is involved in the formation of MgCl2?
a) Non-polar covalent
b) Covalent
c) Ionic
d) Hydrogen - Correct Answerc) Ionic
In a study comparing two different populations, a researcher determines a p-value equal
to 0.003. What does this p-value mean and what should be done with this information?
a) It is very unlikely that the null hypothesis is correct. We should reject the null
hypothesis.
b) It is very likely that the null hypothesis is correct. We should reject the null
hypothesis.
c) It is very unlikely that the null hypothesis is correct. We should accept the null
hypothesis.
d) It is very likely that the null hypothesis is correct. We should accept the null
hypothesis. - Correct Answera) It is very unlikely that the null hypothesis is correct. We
should reject the null hypothesis.
Refer to the diagram of an amino acid shown. Say this was incorporated into a
polypeptide sequence. What kinds of interactions could this amino acid be involved in to
create the tertiary structure of the polypeptide?
a) Van der Waals interactions
b) Ionic bonds
c) Hydrophobic effect
d) A & C are possible
e) All are possible - Correct Answerd) A & C are possible
In lecture we talked about sickle cell anemia, a condition where red blood cells have a
characteristic "sickle" shape because the beta subunits cluster together, and are unable
to efficiently transport oxygen. These effects are a consequence of a mutation in one of
the amino acids found in the sequence of the beta subunit gene. This single amino acid
mutation affects what level(s) of structure in the overall hemoglobin protein?
a) primary
b) tertiary
c) quaternary
d) A & B
e) A & C - Correct Answerd) A & B
Your future self works in a science lab and your intern forgets to label sample tubes!
One tube contains RNA and the other DNA. What feature(s) would help you distinguish
the DNA sample from the RNA? Select all that apply.
a) DNA will have thymine instead of uracil in its nitrogenous bases
b) DNA will have a double-stranded structure
c) DNA will have ribose as the sugar in its backbone
d) DNA will have uracil instead of thymine in its nitrogenous bases
