Questions 43-50You are investigating the properties of cellmembranes using the Fluorescence Recovery AfterPhotobleaching (FRAP) technique. You first label allthe membrane proteins on the cell surface uniformlywith a green fluorescent dye. At 10 minutes, youphotobleach a small area on the cell membrane byshining a beam of strong laser on it (Strong laserpermanently destroys the fluorescent molecules inthe area). You measure the fluorescence in thephotobleached area over time.10minTime43. The recovery of fluorescence in thephotobleached area is due to the fact that .A. The cell membrane is semi-permeable, allowingproteins to be transported across the membrane.B. The cell membrane is fluid, allowing proteinsfrom adjacent areas to move into thephotobleached area.C. Fluorescent molecules are not permanentlydestroyed by the laser beam. They canspontaneously regain their fluorescence over time.D. New proteins are synthesized in the cell andtransported to the cell surface.Fluorescence in thebleached area

FRAP is a technique developed by Axelrod et al. (1976) as a method to study protein mobility in…

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43. The recovery of fluorescence in the photobleached area is due to the fact that_

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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