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

Understanding5 5 Pathophysiology5 5 7th5 5 edition5 5 by5 5 Huether,5 5 McCance5 5 Test5 5
Bank


Chapter551.55Cellular55Biology

MULTIPLE55CHOICE

1. A55student55is55observing55a55cell55under55the55microscope.55It55is55observed55to55have55sup
ercoiled55DNA55with55histones.55Which55of55the55following55would55also55be55observed55by5
5the55student?



a. A55single55circular55chromosome
b. A55nucleus
c. Free-floating55nuclear55material
d. No55organelles


ANS:55B

The55cell55described55is55a55eukaryotic55cell,55so55it55has55histones55and55a55supercoiled55DNA55
within55its55nucleus;55thus,55the55nucleus55should55be55observed.

A55single55circular55chromosome55is55characteristic55of55prokaryotic55cells,55which55do55not55have55h
istones.

Free-
floating55nuclear55material55describes55a55prokaryotic55cell,55which55would55not55have55a55distin
ct55nucleus.

Eukaryotic55cells55have55membrane55bounded55cellular55components55called55organelles.55No55o
rganelles55describes55a55prokaryotic55cell.

2. A55nurse55is55instructing55the55staff55about55cellular55functions.55Which55cellular55function5
5is55the55nurse55describing55when55an55isolated55cell55absorbs55oxygen55and55uses55it55to55tran

sform55nutrients55to55energy?

,a. Metabolic55absorption
b. Communication
c. Secretion
d. Respiration

,ANS:55D

The55ability55of55the55cell55to55absorb55oxygen55refers55to55the55cells55function55of55respiration.

The55ability55of55the55cell55to55function55within55a55society55of55cells55refers55to55its55function55
of55communication.

The55ability55of55the55cell55to55take55in55nutrients55refers55to55the55cells55function55of55metabolic55abs
orption.

The55ability55of55the55cell55to55synthesize55new55substances55and55secrete55these55elsewhere55refers55t
o55the55cells55function55of55secretion.

3. A55eukaryotic55cell55is55undergoing55DNA55replication.55In55which55region55of55the55cell55w
ould55most55of55the55genetic55information55be55contained?

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


ANS:55C

The55region55of55the55cell55that55contains55genetic55material,55including55a55large55amount55of55r
ibonucleic55acid,55most55of55the55DNA,55and55DNA-binding55proteins,55is55the55nucleolus.

The55mitochondria55is55the55site55of55cellular55respiration.

The55ribosomes55are55involved55in55manufacturing55of55proteins55within55the55cell.

The55nucleus55contains55the55nucleolus,55and55it55is55the55nucleolus55that55contains55genetic55material
.

4. The55fluid55mosaic55model55for55biologic55membranes55describes55membrane55behavior.55Ac
cording55to55this55model,55which55of55the55following55float55singly55or55as55aggregates55in55the5
5fluid55lipid55bilayer?


a. Peripheral55membrane55proteins
b. Integral55membrane55proteins

, c. Glycoproteins
d. Cell55adhesion55molecules


ANS:55B

Integral55membrane55proteins55float55freely55in55the55fluid55lipid55bilayer.

Peripheral55membrane55proteins55are55not55embedded55in55the55layer,55but55reside55at55the55surf

ace.55Glycoproteins55act55as55cell55surface55markers.

Cell55adhesion55molecules55are55on55the55outside55of55the55membrane55and55allow55cells55to55hook55t
ogether.

5. Which55of55the55following55can55bind55to55plasma55membrane55receptors?

a. Oxygen
b. Ribosomes
c. Amphipathic55lipids
d. Ligands


ANS:55D

Ligands55are55specific55molecules55that55can55bind55with55receptors55on55the55cell55mem

brane.55Oxygen55moves55by55diffusion;55it55does55not55bind55to55receptors.

Ribosomes55make55proteins55and55are55not55involved55in55

binding.55Amphipathic55lipids55are55a55portion55of55the55c

ell55membrane.

6. A55nurse55is55reviewing55a55report55from55a55patient55with55metastatic55cancer.55What55fi
nding55would55support55the55diagnosis55of55metastatic55cancer?55Alterations55in55extracellu
lar55matrix55that55include:

a. Decreased55fibronectin
b. Increased55collagen