Test Bank Pathophysiology The Biologic Basis For Disease 8th Edition
Test Bank Pathophysiology The Biologic Basis For Disease 8th Edition
Test Bank Pathophysiology The Biologic Basis For Disease 8th Edition
MULTIPLE CHOICE
a. Cells can produce proteins. c. Cells can take in and use nutrients.
ANS: C
In metabolic absorption, all cells take in and use nutrients and other substances from their surroundings. The
remaining options are not inclusive in their descriptions of cellular metabolic absorption.
a. Mitochondria c. Nucleolus
b. Ribosome d. Lysosome
ANS: C
The nucleus contains the nucleolus, a small dense structure composed largely of RNA, most of the cellular DNA, and
the DNA-binding proteins, such as the histones, which regulate its activity. The other options do not contain most
of a cell’s genetic information.
1. Which component of the cell produces hydrogen peroxide (H2O2) by using oxygen to remove hydrogen atoms
from specific substrates in an oxidative reaction?
a. Lysosomes c. Ribosomes
b. Peroxisomes d. Oxyhydrosomes
ANS: B
Peroxisomes are so named because they usually contain enzymes that use oxygen to
remove hydrogen atoms from specific substrates in an oxidative reaction that produces
synthesized in the nucleolus and secreted into the cytoplasm through pores in the nuclear
envelope called nuclear pore complexes. Lysosomes are saclike structures that originate
from the Golgi complex and contain more than 40 digestive enzymes called hydrolases,
which catalyze bonds in proteins, lipids, nucleic acids, and carbohydrates. Oxyhydrosomes
1. Which cell component is capable of cellular autodigestion when it is released during cell
injury?
ANS: D
The lysosomal membrane acts as a protective shield between the powerful digestive enzymes within the lysosome
and the cytoplasm, preventing their leakage into the cytoplasmic matrix. Disruption of the membrane by various
treatments or cellular injury leads to a release of the lysosomal enzymes, which can then react with their specific
substrates, causing cellular self-digestion. The other options do not correctly describe this process.