#ft # f t
Advanced Nutrition and Human Metabolism 7th Edition
#ft #ft #ft #ft #ft #ft
by Sareen S. Gropper
#ft #ft #ft
,Chapter_01_The_Cell A_Microcosm_of_Life
Indicate whether the statement is true or false.
1. Most of the metabolic energy produced in cells is made in the mitochondria.
a. True
b. False
2. An increase in the concentration of a substrate will increase the rate of the enzyme-catalyzed reaction.
a. True
b. False
3. Polysomes function to transcribe mRNA into proteins.
a. True
b. False
4. If two enzymes (e.g., pyruvate dehydrogenase and pyruvate carboxylase) compete for the same substrate (pyruvate), the
one with the higher Km has less affinity and will be more active when pyruvate concentrations are high.
a. True
b. False
5. Transcription of DNA cannot be altered.
a. True
b. False
6. The nuclear envelope is a single membrane structure that helps to isolate the nucleus from the rest of the cell.
a. True
b. False
7. The lipid bilayer determines the function of the plasma membrane, while the proteins are primarily responsible for the
structure of the membrane.
a. True
b. False
8. When discussing enzyme kinetics, Km refers to the substrate concentration at which the enzyme is saturated and
functioning at maximal velocity.
a. True
b. False
9. Peripheral proteins are involved in cell-cell recognition, whereas integral proteins function primarily as
receptors/transporters.
a. True
b. False
,10. The #ftvarious #ftcomponents #ftwithin #fta #ftcell #ft(e.g., #ftmitochondria) #ftare #ftnot #ft“free-floating” #ftin #ftthe #ftcytosol, #ftbut #ftrather,
#ftare #ftheld #ftin #ftplace #ftby #ftthe #ftcytoskeleton.
a. True
b. False
, Name: Class: Date:
Chapter_01_The_Cell A_Microcosm_of_Life
11. Different #ftcells #ftexpress #ftdifferent #ftproteins #ftbecause #ftthey #ftcontain #ftdifferent #ftsequences #ftof #ftDNA #ftin #ftthe #ftnucleus.
a. True
b. False
12. Oncosis #ftresults #ftfrom #ftcell #ftinjury #ftand #ftis #ftassociated #ftwith #ftcellular #ftswelling #ftand #ftswelling #ftof #ftthe #ftmitochondrial #ftnucleus.
a. True
b. False
13. Allosteric #ftregulation #ftof #ftenzymes #ftis #ftcarried #ftout #ftby #ftmodulators, #ftother #ftproteins #ftthat #ftbind #ftto #ftthe #ftenzyme #ftto
#ftinhibit #ftits #ftactivity.
a. True
b. False
14. Most #ftcellular #ftreactions #ftare #ftirreversible #ftbecause #ftthe #ftsame #ftenzyme #ftthat #ftcatalyzes #ftthe #ftconversion #ftcannot
#ftcatalyze #ftthe #ftreverse #ftreaction.
a. True
b. False
15. The #ftplasma #ftmembrane #ftis #fta #ftsheet-like #ftstructure #ftcomposed #ftsolely #ftof #ftlipids.
a. True
b. False
Indicate #ftthe #ftanswer #ftchoice #ftthat #ftbest #ftcompletes #ftthe #ftstatement #ftor #ftanswers #ftthe #ftquestion.
16. Most #ftreceptor #ftproteins #ftare #ftmost #ftlikely #ftwhich #fttype?
a. peripheral #ftproteins
b. internal #ftproteins
c. integral #ftproteins
d. glycoproteins
17. MicroRNAs #ftare #ftsmall #ftnoncoding #ftRNAs #ftthat #ft .
a. enhance #ftgene #ftexpression #ftby #ftactivating #ftmRNA #ftexpression
b. silence #ftgene #ftexpression #ftby #ftbinding #ftto #ftmRNA #ftto #ftinhibit #fttranslation
c. modify #ftgene #ftexpression #ftby #ftreplacing #ftspecific #ftnucleotides #ftin #ftmRNA
d. mediate #ftDNA #ftproduction #ftin #fta #ftreverse #ftdirection
18. All #ftcomponents #ftof #ftthe #ftelectron #fttransport #ftchain #ftare #ftembedded #ftin #ftthe #ft .
a. mitochondrial #ftinner #ftmembrane
b. mitochondrial #ftouter #ftmembrane
c. mitochondrial #ftmatrix
d. cytoplasmic #ftmatrix
19. The #ftsmooth #ftendoplasmic #ftreticulum #ft(SER) #ftis #ftassociated #ftwith #ft .
a. lipid #ftsynthesis