Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 4, Problem 4TY
Summary Introduction
Introduction: Shape, organization, and movement to a cell are provided by its cytoskeleton. Proteins using ATP as a source of energy to facilitate cell movements are known as motor proteins. A head, hinge, and a tail give rise to a motor protein. Flagella and cilia are the cell appendages that are involved in the movement of the animal cell.
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Students have asked these similar questions
A melanosome (type of vesicle containing the pigment melanin) is transported towards the nucleus of the cell. The hydrolysis of ATP is involved with this movement. Identify the most likely motor protein and cytoskeletal filament involved with this transport.
a.
Myosin, microtubules
b.
Kinesin, actin filaments
c.
Dynein, actin filaments
d.
Dynein, microtubules
e.
Kinesin, microtubules
f.
Myosin, actin filaments
The following is FALSE about actin
polymerization:
a. F-actin with ADP bound is removed
from the end of an actin filament
b. G-actin with ATP bound is removed
from the end of a depolymerizing
actin filament
-
c. None of the answers
d. F-actin with ADP bound is required
for depolymerization of an actin
filament
e. G-actin with ATP bound is added to
the + end or growing end of an actin
filament
Which of the following do not play a role in intracellularmovement?a. microfilaments and intermediate filamentsb. microfilaments and microtubulesc. intermediate filaments and microtubulesd. only intermediate filaments
Chapter 4 Solutions
Biology
Ch. 4.1 - What properties of deep-sea vents made them...Ch. 4.1 - Which protobiont seems most similar to todays...Ch. 4.1 - Core Skill: Connections Look back at Figure 3.11....Ch. 4.1 - Prob. 3CCCh. 4.2 - Prob. 1CCCh. 4.2 - Prob. 2CCCh. 4.3 - Prob. 1CSCh. 4.3 - Prob. 1CCCh. 4.3 - Prob. 2CSCh. 4.4 - Prob. 1CS
Ch. 4.4 - Describe the type of movements that occur between...Ch. 4.4 - Prob. 2CSCh. 4.5 - Prob. 1CCCh. 4.5 - Prob. 1CSCh. 4.5 - If we consider the Golgi apparatus as three...Ch. 4.5 - The Nucleus and Endomembrane System Experimental...Ch. 4.5 - Prob. 2EQCh. 4.5 - Prob. 3EQCh. 4.5 - Prob. 3CCCh. 4.6 - Prob. 1CCCh. 4.6 - Core Skill: Connections Look ahead to Figure...Ch. 4.7 - Prob. 1CCCh. 4.7 - Prob. 2CCCh. 4 - The cell theory states that a. all living things...Ch. 4 - Prob. 2TYCh. 4 - Prob. 3TYCh. 4 - Prob. 4TYCh. 4 - Each of the following is part of the endomembrane...Ch. 4 - Prob. 6TYCh. 4 - Functions of the smooth endoplasmic reticulum...Ch. 4 - Prob. 8TYCh. 4 - Prob. 9TYCh. 4 - Which of the following observations would not be...Ch. 4 - What are the four stages that led to the origin of...Ch. 4 - Explain how motor proteins and cytoskeletal...Ch. 4 - Prob. 3CQCh. 4 - Discuss the roles of the genome and proteome in...Ch. 4 - Prob. 2COQ
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- Below are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? Select one: a. Keratin - an intermediate filament, is classified as Types I and II or acid and base keratins. b. Microfilaments have two structures called bundles and networks. The former is used for movement inside the cell while the latter is for intercellular communication. c. Kinesin is a microtubule motor protein that helps in the transportation of cellular material essential to cell function and moves towards the minus end motor. Clear my choicearrow_forwardWhich of the following have the ability to disassemble and reform quickly? a. microfilaments and intermediate filaments b. microfilaments and microtubules c. intermediate filaments and microtubules d. only intermediate filamentsarrow_forwardDefine the following terms:a. microfilamentb. F-actinc. G-actind. ameboid movemente. intermediate filamentf. keratinarrow_forward
- Which type of molecular motors uses ATP hydrolysis to move in a "hand-over-hand" movement down cytoskeletal fibers? a. kinesins b. dyneins O c. myosins d. dyneins and myosinsarrow_forwardDynein uses ATP to A. propel axoneme arms together B. undergoes conformational changes that moves across microtubules in the minus end C. Moves across microtubules in a directional manner D. converts ATP to ADP to undergo head region changesarrow_forwardWhich of the following statements are true for both actin and tubulin: a. Both actin and tubulin filaments are hollow. b. Both actin and tubulin are structural proteins capable to form filaments that can grow from both (+) and (-) ends. c. Both actin and tubulin require GTP for polymerization into filaments. d. Both actin and tubulin require ATP for polymerization into filaments.arrow_forward
- Which of the following have the ability to disassembleand reform quickly?a. microfilaments and intermediate filamentsb. microfilaments and microtubulesc. intermediate filaments and microtubulesd. only intermediate filamentsarrow_forwardActin and myosin are long-filament proteins used in the contraction of muscles. They are examples of ________ proteins. A. Fibrous B. globular C. conjugated D. regulatoryarrow_forwardWhat is necessary to make a cleavage furrow during cytokinesis? A. Kinesin "walking" along microtubules B. Myosin filaments shortening C. Actin and myosin-mediated contraction D. All of the above E. None of the abovearrow_forward
- A triple helix filament structure is highly characteristic of: a. Microtubules b. Actin microfilaments c. Collagen d. Keratinsarrow_forward1. Name the two types of structures that mediate cell-cell contact and are associated with intermediate filaments. 2. The dynamic behavior of microtubules is regulated by a variety of MAPs. What does this stand for? 3. Name the two motor proteins responsible for powering the variety of movementsarrow_forwardWhich of the following is NOT an example of microtubule-based motility? A. ciliary movement B.contractile ring of cleavage furrow C. pigment granule transport in fish scales D.axonal transport in neurons QUESTION 33 You are studying the role of microtubules and microfilaments in cell motility. You treat fibroblasts with cytochalasin, which inhibits microfilaments, or colchicine, which inhibits microtubules, and observe the following: In controls, the cells migrate in a directed way, elongating as they go. With cytochalasin treatment, the cells completely stop migrating while with colchicine treatment, the cells attempt to migrate in several directions at once. The best conclusion for this is: A Cytochalasin prevents cell migration and colchicine prevents directed cell migration. B. Microfilaments are necessary for cell migration and microtubules are necessary for directionality of migration. C. Microfilaments are necessary for cell migration and microtubules are sufficient for…arrow_forward
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