, 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