Transcript Clicker Questions - Mayfield City Schools

CAMPBELL BIOLOGY IN FOCUS
Urry • Cain • Wasserman • Minorsky • Jackson • Reece
3
Carbon and
the Molecular
Diversity of Life
Questions prepared by
Brad Stith, University of Colorado Denver
Jung Choi, Georgia Institute of Technology
William Wischusen, Louisiana State University
© 2014 Pearson Education, Inc.
53. Which of the following statements is true
regarding the movement of substances across
cell membranes?
(A) Ions are unable to move
through the phospholipid bilayer
because the nonpolar tail regions
of the phospholipids are
hydrophobic.
(B) Ions are able to move
through the phospholipid bilayer
because the polar head
regions of the phospholipids are
charged.
© 2014 Pearson Education, Inc.
(C) Water is able to move
through the phospholipid
bilayer because the
nonpolar tail regions of the
phospholipids are charged.
(D) Water is unable to
move through the
phospholipid bilayer
because the polar head
regions of the
phospholipids are charged.
53. Which of the following statements is true
regarding the movement of substances across
cell membranes?
(A) Ions are unable to move
through the phospholipid
bilayer because the nonpolar
tail regions of the
phospholipids are
hydrophobic.
(B) Ions are able to move
through the phospholipid bilayer
because the polar head
regions of the phospholipids are
charged.
© 2014 Pearson Education, Inc.
(C) Water is able to move
through the phospholipid
bilayer because the
nonpolar tail regions of the
phospholipids are charged.
(D) Water is unable to
move through the
phospholipid bilayer
because the polar head
regions of the
phospholipids are charged.
© 2014 Pearson Education, Inc.
8. Which of the following graphs is the most
appropriate representation of the experimental
data?
© 2014 Pearson Education, Inc.
© 2014 Pearson Education, Inc.
The student analyzed the data from the investigation and
concluded that the estimate of the mean of one treatment
group was unreliable. Which of the following identifies the
treatment group most likely to have provided an unreliable
estimate of the mean, and correctly explains why
the estimate appears unreliable?
(A) Treatment group II; it has a lower than expected mean
absorbance and the largest standard error of the mean.
(B) Treatment group III; it has a higher than expected mean
absorbance and the largest standard error of the mean.
(C) Treatment group IV; it has a higher than expected mean
absorbance and the smallest standard error of the mean.
(D) Treatment group V; it has a lower than expected mean
absorbance and the smallest standard error of the mean.
© 2014 Pearson Education, Inc.
© 2014 Pearson Education, Inc.
The student analyzed the data from the investigation and
concluded that the estimate of the mean of one treatment
group was unreliable. Which of the following identifies the
treatment group most likely to have provided an unreliable
estimate of the mean, and correctly explains why
the estimate appears unreliable?
(A) Treatment group II; it has a lower than expected mean
absorbance and the largest standard error of the mean.
(B) Treatment group III; it has a higher than expected mean
absorbance and the largest standard error of the mean.
(C) Treatment group IV; it has a higher than expected mean
absorbance and the smallest standard error of the mean.
(D) Treatment group V; it has a lower than expected mean
absorbance and the smallest standard error of the mean.
© 2014 Pearson Education, Inc.
The chemical bonds present in a molecule contribute to the
properties of the molecule. Carbon is an unusual atom in that it
can form multiple bonds. Which statement is not true?
A. A carbon-to-carbon cis double bond is the type found in
nature and is associated with cardiovascular health.
B. A carbon-to-carbon trans double bond is made artificially in
food processing and is associated with poor cardiovascular
health.
C. Multiple carbon-to-carbon double bonds located near each
other can absorb light, so they are found in molecules in the
eye or in chloroplasts.
D. Multiple carbon-to-carbon bonds are stronger than single
bonds.
E. Saturated fats are those that have a carbon-to-carbon
double bond and are associated with good health.
© 2014 Pearson Education, Inc.
The chemical bonds present in a molecule contribute to the
properties of the molecule. Carbon is an unusual atom in that it
can form multiple bonds. Which statement is not true?
A. A carbon-to-carbon cis double bond is the type found in
nature and is associated with cardiovascular health.
B. A carbon-to-carbon trans double bond is made artificially in
food processing and is associated with poor cardiovascular
health.
C. Multiple carbon-to-carbon double bonds located near each
other can absorb light, so they are found in molecules in the
eye or in chloroplasts.
D. Multiple carbon-to-carbon bonds are stronger than single
bonds.
E. Saturated fats are those that have a carbon-to-carbon
double bond and are associated with good health.
© 2014 Pearson Education, Inc.
Which polysaccharide has the greatest number
of branches?
A. cellulose
B. chitin
C. amylose
D. amylopectin
E. glycogen
© 2014 Pearson Education, Inc.
Which polysaccharide has the greatest number
of branches?
A. cellulose
B. chitin
C. amylose
D. amylopectin
E. glycogen
© 2014 Pearson Education, Inc.
All lipids
A. are made from glycerol and fatty acids.
B. contain nitrogen.
C. have low energy content.
D. are acidic when mixed with water.
E. do not dissolve well in water.
© 2014 Pearson Education, Inc.
All lipids
A. are made from glycerol and fatty acids.
B. contain nitrogen.
C. have low energy content.
D. are acidic when mixed with water.
E. do not dissolve well in water.
© 2014 Pearson Education, Inc.
Sickle-cell disease is caused by a mutation in the
beta-hemoglobin gene that changes a charged
amino acid, glutamic acid, to valine, a hydrophobic
amino acid. Where in the protein would you expect
to find glutamic acid?
A. on the exterior surface of the protein
B. in the interior of the protein, away from water
C. at the active site, binding oxygen
D. at the heme-binding site
© 2014 Pearson Education, Inc.
Sickle-cell disease is caused by a mutation in the
beta-hemoglobin gene that changes a charged
amino acid, glutamic acid, to valine, a hydrophobic
amino acid. Where in the protein would you expect
to find glutamic acid?
A. on the exterior surface of the protein
B. in the interior of the protein, away from water
C. at the active site, binding oxygen
D. at the heme-binding site
© 2014 Pearson Education, Inc.
Which is not a function of proteins?
A. help make up membranes
B. carry the code for translation from the
nucleus to the ribosome
C. bind to hormones (hormone receptor)
D. can be hormones
E. speed chemical reactions
© 2014 Pearson Education, Inc.
Which is not a function of proteins?
A. help make up membranes
B. carry the code for translation from the
nucleus to the ribosome
C. bind to hormones (hormone receptor)
D. can be hormones
E. speed chemical reactions
© 2014 Pearson Education, Inc.
How does RNA differ from DNA?
A. DNA encodes hereditary information; RNA
does not.
B. DNA forms duplexes; RNA does not.
C. DNA contains thymine; RNA contains uracil.
D. all of the above
© 2014 Pearson Education, Inc.
How does RNA differ from DNA?
A. DNA encodes hereditary information; RNA
does not.
B. DNA forms duplexes; RNA does not.
C. DNA contains thymine; RNA contains uracil.
D. all of the above
© 2014 Pearson Education, Inc.
Albinism in humans occurs when both alleles at a locus
produce defective enzymes in the biochemical pathway
leading to melanin. Given that heterozygotes are normally
pigmented, which of the following statements is/are correct?
A. One normal allele produces as much melanin as two
normal alleles.
B. Each defective allele produces a little bit of melanin.
C. Two normal alleles are needed for normal melanin
production.
D. The two alleles are codominant.
E. The amount of sunlight will not affect skin color of
heterozygotes.
© 2014 Pearson Education, Inc.
Albinism in humans occurs when both alleles at a locus
produce defective enzymes in the biochemical pathway
leading to melanin. Given that heterozygotes are normally
pigmented, which of the following statements is/are correct?
A. One normal allele produces as much melanin as two
normal alleles.
B. Each defective allele produces a little bit of melanin.
C. Two normal alleles are needed for normal melanin
production.
D. The two alleles are codominant.
E. The amount of sunlight will not affect skin color of
heterozygotes.
© 2014 Pearson Education, Inc.
When a disease is said to have a multifactorial
basis, it means that
A. both genetic and environmental factors
contribute to the disease.
B. it is caused by a gene with a large number of
alleles.
C. it affects a large number of people.
D. it has many different symptoms.
E. it tends to skip a generation.
© 2014 Pearson Education, Inc.
When a disease is said to have a multifactorial
basis, it means that
A. both genetic and environmental factors
contribute to the disease.
B. it is caused by a gene with a large number of
alleles.
C. it affects a large number of people.
D. it has many different symptoms.
E. it tends to skip a generation.
© 2014 Pearson Education, Inc.