MCCANCES UNDERSTANDING
PATHOPHYSIOLOGY, CANADIAN EDITION
2ND EDITION
Chapter 01: Cellular Biology
Huether & McCance: Understanding Pathophysiology, 6th Edition
MULTIPLE CHOICE
1. A student is observing a cell under the microscope. It is observed to
have supercoiled DNAwith histones. Which of the following would also
be observed by the student?
a. A single circular chromosome
b. A nucleus
c. Free-floating nuclear material
d. No organelles
ANS: B
The cell described is a eukaryotic cell, so it has histones and a
supercoiled DNA within itsnucleus; thus, the nucleus should be observed.
A single circular chromosome called a prokaryote contains free-floating
nuclear material but has no organelles.
REF: p. 2
,2. A nurse is instructing the staff about cellular functions. Which cellular
function is the nurse describing when an isolated cell absorbs oxygen and
uses it to transform nutrients to energy?
, a. Metabolic absorption
b. Communication
c. Secretion
d. Respiration
ANS: D
The cell’s ability to absorb oxygen is referred to as respiration while its
communication abilityinvolves maintenance of a steady dynamic state,
metabolic absorption provides nutrition, and secretion allows for the
synthesizing of new substances.
REF: p. 2