1. Which of the following is responsible for the transport of vesicles along microfilaments?a. Myosin Vb. Dyneinc. Myson IId. Cofiline. Kinesin2. Which of the following is NOT an example of a microfilament-based structure?a. Microvilli structureb. Phagocytosisc. Scission of new vesiclesd. Contractile ringe. Vesicle transport

Microfilaments and microtubules are both types of cytoskeletal filaments found within cells.…

Answered: 1. Which of the following is…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Focal adhesions ________. a. have been implicated in cell locomotion b. contain integrins that develop transient interactions with the extracellular matrix c. collect information about the chemical properties of the extracellular environment d. transmit information to the cell interior that may lead to changes in cell adhesion, proliferation or survival e. All of these are correct.
8. Which of the following is not a feature of voltage-dependent ion channels? A. It has a hydrophobic transmembrane domain B. It is activated by a change in the membrane potential C. It is specific to the ion it lets through D. It is a passive transport E. It can be activated by the binding of a ligand
13. A peripheral membrane protein is best described as a protein a. embedded within the phospholipid bilayer. b. that is transmembrane in nature. c. loosely attached to the inner membrane leaflet. d. that traverses the cytosol of a living cell. 14.Sphingomyelin is identified in plasma membrane of a healthy living cell. Which of the following describes its location in that membrane? a. The outer membrane leaflet. b. In a transmembrane arrangement. c. Intercalated between phospholipids. d. Anchored to lipids facing the cytosol. 15.Protein Y is covalently linked to a fatty acid chain of phospholipid of the inner leaflet of a cell's plasma membrane, but its structure does not extend to the hydrophobic core of the phospholipid layer. Therefore protein Y a. Has glycosylated region facing the cytosol. b. functions as a ligand receptor. c. is a single transmembrane protein. d.is oriented towards the cytosolic compartment.
noitiues Before a vesicle is allowed to fuse with its target membrane, the proteins on the surface of the vesicle. proteins on the target membrane must recognize and bind to the Tethering.. Rab a. b. Rab ...... Tethering v- SNARES ... t-SNARES d. t-SNARES .. Rab
Which of the following is incorrect about the collagen structure? a. The covalent cross-links between the individual chains stabilize the collagen structure b. None; all the other choices are correct The helical structure is cross-linked (with covalent bonds) at both ends Od. Gly residues are all located in the center of the helix (i.e. between the individual chains) C.
View Acrobat Q Tell me A A Aa v Ao 11 - ab x, x A A v 三===|m。|av田。 Styles Styles Pane Dic. Identify the following as Active or Passive transport. (A. Active B. Passive) 1. Diffusion 2. Requires energy 3. Facilitated transport 4. Movement against concentration gradient Match the following tonicities with the correct description 5. Water concentration equal to that of the cell A. Hypertonic B. Isotonic 6. Solute concentration greater than the cell C. Hypotonic 7. Causes turgor pressure in plant cells 8. Net Movement of water into the cell
7. Which of the following arguments best supports the importance of microtubules in the movement of an organism? A. Microtubules are involved in the separation of chromosomes during mitosis B. Microtubules are tracks used for the transport of vesicles from the Endoplasmic to the Golgi apparatus C. Microtubules can slide relative to one another inside cilia and under the action of dynein. D. Microtubules are made of tubulin-dimers E. Microtubules are larger than intermediate filaments and actin filaments
20.The thick filament is composed almost entirely of _____ molecules. (This is a multiple choice question choose the answer from the choices below) A.myosin B.actin C.tropomyosin D.thrombin
33. Which statements concerning passive and active transport are correct? A. Both passive and active transport requires cell energy B. Passive requires cell energy while active transport does not C. Active transport requires cell energy while passive does not D. Neither passive nor active transport requires cell energy
Cellular organization (e.g. movement of organelles) is facilitated by __________. Cells are capable of resisting mechanical stress due to the presence of _________. Select one: a. microtubles, intermediate filaments b. actin, microtubules c. actin, intermediate filaments d. microtubles, actin e. intermediate filaments, actin Clear my choice
19. Which of the following statements about actin is true? A. Binding of actin filaments by ARPS promotes disassembly of actin filaments. B. Actin treadmilling occurs at high concentrations of actin. C. Focal adhesions are released at the beginning of cell movement and do not reform until the cell has reached its destination. D. Actin polymerization initiates protrusion of the membrane in lamellipodia and filopodia.
Match the following type of vesicles to the direction of transport of materials the vesicles do. COPII-coated vesicles COP1-coated vesicles Clathrin-coated vesicles (clathrin) coated pits A. From ER to the Golgi Apparatus B. from TGN to lysosomes C. receptor mediated endocytosis D. from Golgi Apparatus to ER

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