u u u
ce & Huether’s Patho
u u u
physiology: The Biolo u u
gic Basis for Disease i
u u u u
n Adults and Childre
u u u
n 9th Edition by Julia
u u u u u
Rogers
1
, PATHO PHYSI
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OLOGY9TH E u u u u
DITION u
MCCANCE TEST
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BANK LATESTRE
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VISED
,Chapter u1:uCellular uBiology
MULTIPLEuCHOICE
1. Whichu componentu ofu theu cellu p rodNuUc eR sSIhNyGd TroBg. Ce nO Mp e r o x id e u (H2O2 )u byu usingu oxygenu tou r
emoveu hydrogenu atomsu fromu specificu substratesu inu anu oxidativeu reaction?
a. Lysosomes c. Ribosomes
b. Peroxisomes d.u Oxyhydrosomes
ANS:u B
Peroxisomesu areu sou named u becauseu theyu usuallyu containu enzymesu that u useu oxygenu tou remov
eu hydrogenu atomsu fromu specificu substratesu inu anuoxidativeu reactionu that uproducesuH2 O2 ,u whi
chu isu au powerfulu oxidant uandu potentiallyu destructiveu if uit u accumulatesu oru escapesu fromu peroxi
somes.u Ribosomesu areu RNA-
proteinu complexesu (nucleoproteins)u that u areu synthesized u inu theu nucleolusu and u secreted u intou t
heu cytoplasmu throughu poresu inu theu nuclearu envelopeu called u nuclearu poreu complexes.u Lysoso
mesu areu saclikeu structuresu that u originateu fromu theu Golgiu complexu and ucontainumoreu thanu 40ud
igestiveu enzymesu called u hydrolases,uwhichu catalyzeu bondsuinu proteins,u lipids,u nucleicu acids,u
and u carbohydrates.u Oxyhydrosomesu areu involved u inu enzymeu production.
PTS:u u 1 REF:u Pageu 8
2. Whichu statement u best u describesu theu cellularu functionu of u metabolicu absorption?
a. Cellsu canu produceu proteins. c. Cellsu canu takeu inu and u useu nutrients.
b. Cellsu canu secreteu digestiveu enzymes. d.u Cellsu canu synthesizeu fats.
ANS:u C
Inu metabolicu absorption,u allu cellsu takeu inu anduuseunutrientsu anduotherusubstancesu fromu theiru su
rroundings.u Theu remainingu optionsu areu not u inclusiveu inu theiru descriptionsu of u cellularu metabol
icu absorption.
PTS:u u 1 REF:u Pageu 2
3. Most u of u au cell’su geneticu information,u includingu RNA u and u DNA,u isu contained u inu the:
a. Mitochondria c. Nucleolus
b. Ribosome d.u u Lysosome
ANS:u C
Theu nucleusu containsu theu nucleolus,uau smallu denseu structureu composed u largelyu of u RNA,umos
t u of u theu cellularu DNA,u and u theu DNA-
bindingu proteins,u suchu asu theu histones,u whichu regulateuitsuactivity.uTheu otheruoptionsudounot u c
ontainu most u of u au cell’su geneticu information.
PTS:u u 1 REF:u Pageu 2
4. Whichu cellu component u isu capableu of u cellularu autodigestionu whenuit uisureleased u duringu cellu i
njury?
a. Ribosome c. Smoothuendoplasmicu reticulum
ANS:u D
, b. Golgiu complex d.u Lysosomes
ANS:u D