Which of the following guide transport vesicles to their target membrane?A. Rab monomeric GTPasesB. Signal SequenceOC. Heat Shock ProteinsOD. All of the aboveO E. None of the above

Rab GTPases: These proteins act as molecular switches, cycling between an active GTP-bound state and…

Answered: Which of the following guide transport…

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter6: Cell Communication

Section: Chapter Questions

Problem 4TYU

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1. Which of the following regarding the Rab protein is false? After having supported the targeting and fusion of a transport vesicles the Rab proteins is recycled; the Rab proteins is bound to its effector on the target membrane; GTp in the rab proteins can't be hydrolyzed to gdp; the rab proteins is bound to the vesicles membrane In its gtp bound form 2. Most proteins destined to enter the endoplasmic reticulum? Undergo their entire translation on th er membrane; crossd the membrane in a folded state; rely on the signal recognition; retain their signal sequence after reaching the lumen of the er 3. Indicate which statement is either true or false. Glyclosylation is needed for delivering hydraolase to the lysosome; the high ph in the lysosomal lumen facilitates the unloading of hydrolases from the m6p receptor; the mannose 6 p modification on the lysosomal hydrolases is completed in the er
A characteristic of carrier molecules in a primary active transport pump is that: a. they cannot transport a substance and also hydrolyze ATP. b. they retain their same shape as they perform different roles. c. their primary role is to move negatively charged ions across membrances. d. they move Na+ into a neural cell and K+ out of the same cell. e. they act to establish an electrochemical gradient.
All of the following are true of integrins except (a) they are receptor proteins (b) they help organize the cytoskeleton (c) they are part of the ECM (d) they are important in cell signaling (e) they are located in the plasma membrane
The principal force driving movement in diffusion is______. a. temperature b. particle size c. concentration gradient d. membrane surface area
Water moves via osmosis _______. a. throughout the cytoplasm b. from an area with a high concentration of other solutes to a lower one c. from an area with a low concentration of solutes to an area with a higher one d. from an area with a low concentration of water to one of higher concentration
The tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a. phosphate groups; hydrophobic b. fatty acid groups; hydrophilic c. phosphate groups; hydrophilic d. fatty acid groups; hydrophobic
A driving ion moving through a membrane channel in one direction gives energy to actively transport another molecule in the opposite direction. What is this process called? a. facilitated diffusion b. antiport transport c. symport transport d. primary active transport pump e. contransport
Most of a membranes diverse functions are carried out by ________ . a. proteins c. nucleic acids b. phospholipids d. hormones
Which of the following methods of transport is being used to transfer the substance into the cell in the accompanying graph? a. diffusion down a concentration gradient b. osmosis c. facilitated diffusion d. active transport e. vesicular transport f. It is impossible to tell with the information provided.
When William H. was helping victims after a devastating earthquake in a region not prepared to swiftly set up adequate temporary shelter, he developed severe diarrhea. He was diagnosed as having cholera, a disease transmitted through unsanitary water supplies contaminated by fecal material from infected indiv iduals. The toxin produced by cholera bacteria causes Cl- channels in the lurninal membranes of the intestinal cells to stay open, thereby increasing the secretion of Cl- from the cells into the intestinal tract lumen. By what mechanisms would Na+ and water be secreted into the lumen in conjunction with Cl- secretion? How does this secretory response account for the severe diarrhea that is characteristic of cholera?
Because they are embedded within the membrane, ion channels are examples of ________. receptor proteins integral proteins peripheral proteins glycoproteins
Active transport must function continuously because_______. a. plasma membranes wear out b. cells must be in constant motion c. facilitated transport opposes active transport d. diffusion is constantly moving the solutes in the other direction

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Which of the following guide transport vesicles to their target membrane? A. Rab monomeric GTPases B. Signal Sequence OC. Heat Shock Proteins OD. All of the above O E. None of the above