Test Bank for Essentials of Oral Histology and Embryology: A Clinical Approach. 6th Edition by Daniel J. Chiego Jr

Test Bank for Essentials of Oral Histology and
Embryology: A Clinical Approach. 6th Edition by
Daniel J. Chiego Jr

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

MULTIPLE CHOICE


1. What compound is produced by mitochondria to supply energy within the cell?

a. ADP

b. ATP

c. RNA

d. DNA

Correct Answer: B


Explanation:

A. ATP, not ADP, is the energy molecule generated by mitochondria.

B. Correct. ATP is synthesized by mitochondria to provide cellular energy.

C. Mitochondria do not generate RNA for energy.

D. DNA is not created by mitochondria for energy.




2. All the following tissues derive from mesoderm except which one?

a. Bone

b. Liver

c. Blood

d. Muscle

Correct Answer: B


Explanation:

A. Bone originates from mesoderm.

B. Correct. The liver comes from the endoderm.

,C. Blood originates from mesoderm.

D. Muscle is formed from mesoderm.




3. Which of the following acts as a second messenger?

a. aDNA

b. mRNA

c. dGMP

d. cAMP

Correct Answer: D


Explanation:

A. aDNA is not a second messenger.

B. mRNA does not serve as a second messenger.

C. dGMP does not act as a second messenger.

D. Correct. cAMP conveys signals inside the cell after membrane receptor activation.




4. Which cell structure is involved in making proteins?

a. Ribosomes

b. Lysosomes

c. Mitochondria

d. Plasma membrane

Correct Answer: A


Explanation:

A. Correct. Ribosomes manufacture proteins.

B. Lysosomes digest cell and extracellular materials.

, C. Mitochondria supply cellular energy.

D. The plasma membrane controls what enters and leaves the cell.




5. Which organelle is responsible for producing microtubules?

a. Nucleus

b. Centriole

c. Golgi complex

d. Endoplasmic reticulum

Correct Answer: B


Explanation:

A. The nucleus does not make microtubules.

B. Correct. Centrioles generate microtubules.

C. The Golgi complex does not make microtubules.

D. The endoplasmic reticulum does not produce microtubules.




6. Which phase of the cell cycle represents the first resting stage?

a. S phase

b. G1 phase

c. G2 phase

d. Prophase

Correct Answer: B


Explanation:

A. DNA synthesis occurs in the S phase.

B. Correct. G1 is the initial resting stage.