TESTBANK For Essentials of Oral Histology and Embryology, 5th Edition BY Daniel J.Chiego

TESTBANK For Essentials of Oral Histology and Embryology, 5th Edition BY Daniel J.Chiego

Chapter 01: Development and Structure of Cells and Tissues
Chiego: Essentials of Oral Histology and Embryology, 5th Edition
MULTIPLE CHOICE
1. Mitochondria produce which chemical for intracellular energy?
a. ADP
b. ATP
c. RNA
d. DNA
ANS: B
Feedback
A Mitochondria generate energy through ATP, not ADP, production. B Correct. Mitochondria produce energy via ATP. C Mitochondria generate energy through ATP, not RNA, production. D Mitochondria generate energy through ATP, not DNA, production. DIF: Recall REF: pp. 2-3 OBJ: 1
2. Each tissue originates from mesoderm, EXCEPT one. Which is the EXCEPTION?
a. Bone
b. Liver
c. Blood
d. Muscle
ANS: B
Feedback
A Bone tissue develops from mesodermal cells. B Correct. Liver tissue is produced by endodermal cells. C Blood develops from mesodermal cells. D Muscle tissue develops from mesodermal cells. DIF: Recall REF: p. 6 OBJ: 3
3. Which chemical is called the second messenger?
a. aDNA
b. mRNA
c. dGMP
d. cAMP
ANS: D
Feedback
A cAMP is the second messenger; aDNA is not. B cAMP is the second messenger; mRNA is not. C cAMP is the second messenger; dGMP is not.
D Correct. cAMP transmits information to the intracellular organelles when
activated by surface receptors on the plasma membrane. DIF: Recall REF: p. 3 OBJ: 3
4. Which cellular component facilitates protein synthesis?
a. Ribosomes
b. Lysosomes
c. Mitochondria
d. Plasmalemma
ANS: A
Feedback
A Correct. Ribosomes synthesize protein. B Lysosomes facilitate the breakdown of intracellular and extracellular substances. C Mitochondria generate energy. D The plasmalemma provides a protective barrier and regulates the transport of
substances to and from the cell. DIF: Comprehension REF: p. 2 OBJ: 1
5. Which organelle produces microtubules?
a. Nucleus
b. Centriole
c. Golgi apparatus
d. Endoplasmic reticulum
ANS: B
Feedback
A Centrioles generate microtubules; the nucleus does not. B Correct. Centrioles produce microtubules. C Centrioles generate microtubules; the Golgi apparatus does not. D Centrioles generate microtubules; the endoplasmic reticulum does not. DIF: Recall REF: p. 3 OBJ: 1
6. Which phase of the cell cycle is characterized as the initial resting stage?
a. S phase
b. G1 phase
c. G2 phase
d. Prophase
ANS: B
Feedback
A The S phase is characterized as the stage in which DNA synthesis is complete. B Correct. The G1 phase is the initial resting stage. C The G2 phase is characterized by post-DNA duplication.
D Prophase is characterized by four specific structural changes. DIF: Recall REF: p. 4 OBJ: 1
7. Posttranslational modifications to proteins produced by the rough endoplasmic reticulumareaccomplished by . a. mitochondria
b. Golgi apparatus
c. messenger RNA
d. smooth endoplasmic reticulum
ANS: B
Feedback
A The Golgi apparatus is responsible for posttranslational alterations; mitochondriaare not. B Correct. The Golgi apparatus makes alterations to proteins produced by the
rough endoplasmic reticulum. C The Golgi apparatus is responsible for posttranslational alterations; mRNAis
not. D The Golgi apparatus is responsible for posttranslational alterations; the smoothendoplasmic reticulum is not. DIF: Recall REF: p. 2 OBJ: 1
8. The provides an ideal environment for the implantation and growth of the embryo. a. ovary
b. uterine tube
c. myometrium
d. endometrium
ANS: D
Feedback
A The ovary is the female reproductive organ, in which the ova or eggs are
produced. B The uterine tube conducts the egg from the ovary to the uterus. C The myometrium is the smooth muscle that lines the uterus. D Correct. The endometrium provides the ovum with the nourishment necessaryfor implantation and growth. DIF: Comprehension REF: pp. 6-9 OBJ: 3
9. Intercalated disks are present in which type of muscle?
a. Cardiac
b. Smooth
c. Skeletal
d. Voluntary
ANS: A
Feedback
A Correct. Cardiac is the only type of muscle tissue with intercalated disks. B Intercalated disks are not present in smooth muscle. C Intercalated disks are not present in skeletal muscle. D Intercalated disks facilitate the involuntary contractions of cardiac muscle. DIF: Recall REF: p. 15 OBJ: 4

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