Test Bank for Essentials of Oral Histology and Embryology, 6th Edition by Chiego – Complete Chapters for Dental and Oral Health Exam Preparation

Essentials
by Daniel J. Chiego of Oral
Jr. MS PhDHistology
(Author) and Embryology: A Clinical Approach 6th Edition



Essentials of oral histology and embryology 6th edition chiego

, Chapter 01: Development and Structure of Cells and Tissues
Chiego: Essentials of Oral Histology and Embryology, 6th Edition



MULTIPLE CHOICE

1. Mitochondria produce which chemical for intracellular energy?
a. ADP
b. ATP
c. RNA
d. DNA
CORRECT ANSWER: 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

CORRECT ANSWER: 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



CORRECT ANSWER: B

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.
D . 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

CORRECT ANSWER: 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.

5. Which organelle produces microtubules?
a. Nucleus
b. Centriole
c. Golgi apparatus
d. Endoplasmic reticulum


CORRECT ANSWER: 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

CORRECT ANSWER: 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 reticulum
are
accomplished by .
a. mitochondria
b. Golgi apparatus
c. messenger RNA
d. smooth endoplasmic reticulum


CORRECT ANSWER: B

Feedback
A The Golgi apparatus is responsible for posttranslational alterations; mitochondria
are 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; mRNA is
not.
D The Golgi apparatus is responsible for posttranslational alterations; the smooth
endoplasmic 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