Understanding Pathophysiology 7th edition by Huether, McCance Test Bank Latest Updated Examination Study Guide 2022

Understanding Pathophysiology 7th edition by Huether, McCance Test Bank
Latest Updated Examination Study Guide 2022
70




Chapter701.70Cellular70Biology

MULTIPLE70CHOICE

1. A70student70is70observing70a70cell70under70the70microscope.70It70is70observed70to70have70sup
ercoiled70DNA70with70histones.70Which70of70the70following70would70also70be70observed70by7
0the70student?



a. A70single70circular70chromosome
b. A70nucleus
c. Free-floating70nuclear70material
d. No70organelles


ANS:70B

The70cell70described70is70a70eukaryotic70cell,70so70it70has70histones70and70a70supercoiled70DNA70
within70its70nucleus;70thus,70the70nucleus70should70be70observed.

A70single70circular70chromosome70is70characteristic70of70prokaryotic70cells,70which70do70not70have70h
istones.

Free-
floating70nuclear70material70describes70a70prokaryotic70cell,70which70would70not70have70a70distin
ct70nucleus.

Eukaryotic70cells70have70membrane70bounded70cellular70components70called70organelles.70No70o
rganelles70describes70a70prokaryotic70cell.

2. A70nurse70is70instructing70the70staff70about70cellular70functions.70Which70cellular70function7
0is70the70nurse70describing70when70an70isolated70cell70absorbs70oxygen70and70uses70it70to70tran

sform70nutrients70to70energy?

a. Metabolic70absorption

,b. Communication
c. Secretion
d. Respiration

,ANS:70D

The70ability70of70the70cell70to70absorb70oxygen70refers70to70the70cells70function70of70respiration.

The70ability70of70the70cell70to70function70within70a70society70of70cells70refers70to70its70function70
of70communication.

The70ability70of70the70cell70to70take70in70nutrients70refers70to70the70cells70function70of70metabolic70abs
orption.

The70ability70of70the70cell70to70synthesize70new70substances70and70secrete70these70elsewhere70refers70t
o70the70cells70function70of70secretion.

3. A70eukaryotic70cell70is70undergoing70DNA70replication.70In70which70region70of70the70cell70w
ould70most70of70the70genetic70information70be70contained?

a. Mitochondria
b. Ribosome
c. Nucleolus
d. Nucleus


ANS:70C

The70region70of70the70cell70that70contains70genetic70material,70including70a70large70amount70of70r
ibonucleic70acid,70most70of70the70DNA,70and70DNA-binding70proteins,70is70the70nucleolus.

The70mitochondria70is70the70site70of70cellular70respiration.

The70ribosomes70are70involved70in70manufacturing70of70proteins70within70the70cell.

The70nucleus70contains70the70nucleolus,70and70it70is70the70nucleolus70that70contains70genetic70material
.

4. The70fluid70mosaic70model70for70biologic70membranes70describes70membrane70behavior.70Ac
cording70to70this70model,70which70of70the70following70float70singly70or70as70aggregates70in70the7
0fluid70lipid70bilayer?


a. Peripheral70membrane70proteins
b. Integral70membrane70proteins

, c. Glycoproteins
d. Cell70adhesion70molecules


ANS:70B

Integral70membrane70proteins70float70freely70in70the70fluid70lipid70bilayer.

Peripheral70membrane70proteins70are70not70embedded70in70the70layer,70but70reside70at70the70surf

ace.70Glycoproteins70act70as70cell70surface70markers.

Cell70adhesion70molecules70are70on70the70outside70of70the70membrane70and70allow70cells70to70hook70t
ogether.

5. Which70of70the70following70can70bind70to70plasma70membrane70receptors?

a. Oxygen
b. Ribosomes
c. Amphipathic70lipids
d. Ligands


ANS:70D

Ligands70are70specific70molecules70that70can70bind70with70receptors70on70the70cell70mem

brane.70Oxygen70moves70by70diffusion;70it70does70not70bind70to70receptors.

Ribosomes70make70proteins70and70are70not70involved70in70

binding.70Amphipathic70lipids70are70a70portion70of70the70c

ell70membrane.

6. A70nurse70is70reviewing70a70report70from70a70patient70with70metastatic70cancer.70What70fi
nding70would70support70the70diagnosis70of70metastatic70cancer?70Alterations70in70extracellu
lar70matrix70that70include:

a. Decreased70fibronectin
b. Increased70collagen