Campbell Biology Chapter 11 / Real Exam Questions with Correct
Campbell Biology; Chapter 11: Worksheet
Answers, A+ Score Solutions.
Study online at https://quizlet.com/_3wzuvv
1. The basis of cellular differentiation is selective gene expression.
A) selective gene expression.
B) the operon.
C) cloning.
D) mutation.
2. Adult stem cells have limited therapeutic potential because their develop-
mental potential is limited
A) because their developmental potential is limited to to certain tissues.
certain tissues.
B) due to their excessive numbers in tissues.
C) because they lack a complete set of genes.
D) because they are fully differentiated.
3. In plants, most differentiated cells retain a complete set of their
genes, and retain the abil-
A) only a tiny fraction of their original set of genes. ity to express those genes
B) the ability to dedifferentiate, but then cannot return under certain
to their original differentiated state. circumstances.
C) a complete set of their genes, but lose the ability to
express most of those genes.
D) a complete set of their genes, and retain the ability
to express those genes under certain
circumstances.
4. To initiate a signal transduction pathway, a signal plasma membrane.
binds to a receptor protein usually located in the
A) nucleus.
B) plasma membrane.
C) ER.
D) cytoplasm.
, Campbell Biology; Chapter 11: Worksheet
Study online at https://quizlet.com/_3wzuvv
5. Which of the following processes occurs when a sala- Certain cells in the
mander regenerates a lost limb? limb dedifferentiate, di-
vide, and then redifferen-
A) The homeotic genes of the regenerating cells turn tiate to form a new limb.
off.
B) A new salamander develops from the lost limb.
C) Oncogenes that cause accelerated cell division are
turned on.
D) Certain cells in the limb dedifferentiate, divide, and
then redifferentiate to form a new limb.
6. In multicellular organisms, the coordination of cellular cell-to-cell signaling and
activities relies on signal transduction path-
ways.
A) operons.
B) the availability of certain "key" nutrients as cells
divide.
C) cell receptors that detect transcription factors.
D) cell-to-cell signaling and signal transduction path-
ways.
7. The expression of the tryptophan operon is controlled a repressor that is active
by when it binds to trypto-
phan.
A) a repressor that is active when it is alone.
B) a repressor that is inactive when it binds to lactose.
C) a repressor that is active when it binds to trypto-
phan.
D) an activator that turns the operon on by binding to
DNA.
8.
, Campbell Biology; Chapter 11: Worksheet
Study online at https://quizlet.com/_3wzuvv
Which of the following statements about proto-onco- A mutation in a tu-
genes is false? mor-suppressor gene can
stop cell division immedi-
A) Proto-oncogenes are normal genes with the poten- ately.
tial to become oncogenes.
B) A mutation in a tumor-suppressor gene can stop cell
division immediately.
C) A mutation must occur in a cell's DNA for a pro-
to-oncogene to become an oncogene.
D) Many proto-oncogenes code for growth factors.
9. In a prokaryote, a group of genes with related func- an operon.
tions, along with their associated control
sequences, defines
A) a locus.
B) an operon.
C) an allele.
D) a transposon.
10. The tortoiseshell pattern on a cat results from X chromo-
some inactivation.
A) usually occurs in males.
B) results from X chromosome inactivation.
C) is the result of a homozygous recessive condition.
D) is a result of alleles on the Y chromosome.
11. The genes for the enzymes of glycolysis are active in all metabo-
lizing cells, but the genes
A) and the genes for all specialized proteins are ex- for specialized proteins are
pressed in all embryonic cells. expressed only in
B) and the genes for all specialized proteins are ex- particular cell types.
pressed in all metabolizing cells.
Campbell Biology; Chapter 11: Worksheet
Answers, A+ Score Solutions.
Study online at https://quizlet.com/_3wzuvv
1. The basis of cellular differentiation is selective gene expression.
A) selective gene expression.
B) the operon.
C) cloning.
D) mutation.
2. Adult stem cells have limited therapeutic potential because their develop-
mental potential is limited
A) because their developmental potential is limited to to certain tissues.
certain tissues.
B) due to their excessive numbers in tissues.
C) because they lack a complete set of genes.
D) because they are fully differentiated.
3. In plants, most differentiated cells retain a complete set of their
genes, and retain the abil-
A) only a tiny fraction of their original set of genes. ity to express those genes
B) the ability to dedifferentiate, but then cannot return under certain
to their original differentiated state. circumstances.
C) a complete set of their genes, but lose the ability to
express most of those genes.
D) a complete set of their genes, and retain the ability
to express those genes under certain
circumstances.
4. To initiate a signal transduction pathway, a signal plasma membrane.
binds to a receptor protein usually located in the
A) nucleus.
B) plasma membrane.
C) ER.
D) cytoplasm.
, Campbell Biology; Chapter 11: Worksheet
Study online at https://quizlet.com/_3wzuvv
5. Which of the following processes occurs when a sala- Certain cells in the
mander regenerates a lost limb? limb dedifferentiate, di-
vide, and then redifferen-
A) The homeotic genes of the regenerating cells turn tiate to form a new limb.
off.
B) A new salamander develops from the lost limb.
C) Oncogenes that cause accelerated cell division are
turned on.
D) Certain cells in the limb dedifferentiate, divide, and
then redifferentiate to form a new limb.
6. In multicellular organisms, the coordination of cellular cell-to-cell signaling and
activities relies on signal transduction path-
ways.
A) operons.
B) the availability of certain "key" nutrients as cells
divide.
C) cell receptors that detect transcription factors.
D) cell-to-cell signaling and signal transduction path-
ways.
7. The expression of the tryptophan operon is controlled a repressor that is active
by when it binds to trypto-
phan.
A) a repressor that is active when it is alone.
B) a repressor that is inactive when it binds to lactose.
C) a repressor that is active when it binds to trypto-
phan.
D) an activator that turns the operon on by binding to
DNA.
8.
, Campbell Biology; Chapter 11: Worksheet
Study online at https://quizlet.com/_3wzuvv
Which of the following statements about proto-onco- A mutation in a tu-
genes is false? mor-suppressor gene can
stop cell division immedi-
A) Proto-oncogenes are normal genes with the poten- ately.
tial to become oncogenes.
B) A mutation in a tumor-suppressor gene can stop cell
division immediately.
C) A mutation must occur in a cell's DNA for a pro-
to-oncogene to become an oncogene.
D) Many proto-oncogenes code for growth factors.
9. In a prokaryote, a group of genes with related func- an operon.
tions, along with their associated control
sequences, defines
A) a locus.
B) an operon.
C) an allele.
D) a transposon.
10. The tortoiseshell pattern on a cat results from X chromo-
some inactivation.
A) usually occurs in males.
B) results from X chromosome inactivation.
C) is the result of a homozygous recessive condition.
D) is a result of alleles on the Y chromosome.
11. The genes for the enzymes of glycolysis are active in all metabo-
lizing cells, but the genes
A) and the genes for all specialized proteins are ex- for specialized proteins are
pressed in all embryonic cells. expressed only in
B) and the genes for all specialized proteins are ex- particular cell types.
pressed in all metabolizing cells.
