100% tevredenheidsgarantie Direct beschikbaar na je betaling Lees online óf als PDF Geen vaste maandelijkse kosten
logo-home
ASU Cell BIO 353 Exam 3 SA Practice Questions and Answers €9,53
In winkelwagen

Tentamen (uitwerkingen)

ASU Cell BIO 353 Exam 3 SA Practice Questions and Answers

 0 keer verkocht
  • Vak
  • 2024/2025
  • Instelling
  • 2024/2025

ASU Cell BIO 353 Exam 3 SA Practice Questions and Answers How do mitochondria get their lipids? Give a detailed answer. - Ans:-a. Lipids synthesized in ER b. transported to mitochondria c. switch of lipid takes place between ER and mitochondria & between mitochondrial membranes d. Membrane-tet...

[Meer zien]

Voorbeeld 3 van de 16  pagina's

  • 23 oktober 2024
  • 16
  • 2024/2025
  • Tentamen (uitwerkingen)
  • Vragen en antwoorden
  • 2024/2025
  • 2024/2025
avatar-seller
©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




ASU Cell BIO 353 Exam 3 SA Practice
Questions and Answers


How do mitochondria get their lipids? Give a detailed answer. - Ans:✔✔-a. Lipids synthesized in ER


b. transported to mitochondria


c. switch of lipid takes place between ER and mitochondria & between mitochondrial membranes


d. Membrane-tethering & lipid transfer proteins in mitochondria provides FIRST insight into mechanisms

and transport processes


e. Mitochondria DO NOT participate in vesicle trafficking, obtain lipids from ER through mitochondrial-

associated ER membranes


List the chaperones in the order that they are used in the long path of getting a protein into the

mitochondrial matrix. (Note you should start in the cytoplasm.) - Ans:✔✔-a. cytoHSP70- in cytoplasm,

chaperone that coats mRNA


b. mitoHSP70- in between inner&outer mitochondrial membranes




Page 1/16

, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




c. mitoHSP60- mitochondrial matrix, enables whole protein to come in w/ COOH end, uses ATP for

chaperone


Describe evolution of endomembrane system -include why it is important. Contrast this with the

evolution of the endosymbiotic origin of mitochondria and chloroplasts. - Ans:✔✔-a. endomembrane

system is involved in a comprehensive communication system between cells.


b. Components of endomembrane system are central to eukaryotic cell life


c. Endosymbiosis.


Analyze the signal sequence, and related characteristics that suggest that mitochondria and chloroplasts

did not originate as part of the evolution of the endomembrane system - Ans:✔✔-a. Components of

endomembrane system are central to eukaryotic cell life


b. Endosymbiosis- improved fitness of the cell


c. Mitochondria can make their own protein from circular DNA, now most has been outsourced to

nucleus with genes transcribed in cytoplasm


d. Signal sequence recruits HSP70 and coats growing protein


Explain how cells take in water and general food at the periphery of the cells. - Ans:✔✔-a. Food-

phagocytosis - plasma membrane is pushed out around food, creating two lamellipodia and fuse

together to form vesicle around food


Page 2/16

, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




b. Water- pinocytosis - invagination forms around water, taken into cytoplasm through membrane

channels to avoid damaging cell if vesicle explodes- membrane "Straw" used to "sip" water


Explain how general food and food taken in by receptor mediated endocytosis merge with elements of

the endomembrane system to digest and absorb those nutrients (including cholesterol). - Ans:✔✔-a.

When a ligand binds to a receptor, receptor undergoes a conformational change.


b. Exposes binding site for adaptor protein AP-2


c. Capping occurs when same type of receptors bind to their ligands all over surface of cell come

together over small area; looks like baseball cap without the brim.


d. Adapter protein recruits triskelon to form clathrin coat


e. Receptor and ligand move using molecular motors


f. Amino acid subunits pumped into cytoplasm & indigestible components removed by exocytosis


Explain how membrane flow participates with membranes that are part of the endomembrane system,

but also part of the plasma membrane. - Ans:✔✔-a. Vesicular transport moves newly synthesized lipids,

transmembrane proteins, and luminal proteins within the endomembrane system.


b. Forms spherical vesicle


c. Vesicle is transported on microtubule pathway from ER to cis-face GA then move to cell periphery,

transfer to actin filament, and move to PM

Page 3/16

Dit zijn jouw voordelen als je samenvattingen koopt bij Stuvia:

Bewezen kwaliteit door reviews

Bewezen kwaliteit door reviews

Studenten hebben al meer dan 850.000 samenvattingen beoordeeld. Zo weet jij zeker dat je de beste keuze maakt!

In een paar klikken geregeld

In een paar klikken geregeld

Geen gedoe — betaal gewoon eenmalig met iDeal, Bancontact of creditcard en je bent klaar. Geen abonnement nodig.

Focus op de essentie

Focus op de essentie

Studenten maken samenvattingen voor studenten. Dat betekent: actuele inhoud waar jij écht wat aan hebt. Geen overbodige details!

Veelgestelde vragen

Wat krijg ik als ik dit document koop?

Je krijgt een PDF, die direct beschikbaar is na je aankoop. Het gekochte document is altijd, overal en oneindig toegankelijk via je profiel.

Tevredenheidsgarantie: hoe werkt dat?

Onze tevredenheidsgarantie zorgt ervoor dat je altijd een studiedocument vindt dat goed bij je past. Je vult een formulier in en onze klantenservice regelt de rest.

Van wie koop ik deze samenvatting?

Stuvia is een marktplaats, je koop dit document dus niet van ons, maar van verkoper GraceAmelia. Stuvia faciliteert de betaling aan de verkoper.

Zit ik meteen vast aan een abonnement?

Nee, je koopt alleen deze samenvatting voor €9,53. Je zit daarna nergens aan vast.

Is Stuvia te vertrouwen?

4,6 sterren op Google & Trustpilot (+1000 reviews)

Afgelopen 30 dagen zijn er 71250 samenvattingen verkocht

Opgericht in 2010, al 15 jaar dé plek om samenvattingen te kopen

Start met verkopen
€9,53
  • (0)
In winkelwagen
Toegevoegd