3.4.5.The waved albatross feeds exclusively on marine organisms and has no access to freshwater. It has specialized nasal glands to excrete excess salt. Consider the cellularmechanisms that might be involved in the productions of the highly concentrated saltsolution released by this bird.a) Would the production of the concentrated salt solution be an active process or a passiveprocess? Explain your reasoning.b) What type of membrane transport mechanisms might be involved?c) What problems might arise if the albatross were unable to rid itself of excess salt?Consider the following statement: "An understanding of chemistry is essential to a solidunderstanding of biological processes." State whether or not you agree with this statementand why. Use at least two specific examples from this course to justify your response.a) Describe, using a diagram or point form notes, what is happening duringtranscription and translation of protein synthesis. Indicate where these events takeplace in the cell.b) An error occurs in the transcription of the original master strand of DNA. At the veryfirst base pair, a guanine is substituted for cytosine. State the possible effects on thepolypeptide and it fun min

Albatrosses have salt glands just behind their eye sockets. This salt gland allows them to get rid…

The waved albatross feeds exclusively on marine organisms and has no access to fresh water. It has specialized nasal glands to excrete excess salt. Consider the cellular mechanisms that might be involved in the productions of the highly concentrated salt solution released by this bird. a) Would the production of the concentrated salt solution be an active process or a passive process? Explain your reasoning. b) What type of membrane transport mechanisms might be involved? c) What problems might arise if the albatross were unable to rid itself of excess salt?

The waved albatross feeds exclusively on marine organisms and has no access to fresh water. It has specialized nasal glands to excrete excess salt. Consider the cellular mechanisms that might be involved in the productions of the highly concentrated salt solution released by this bird. a) Would the production of the concentrated salt solution be an active process or a passive process? Explain your reasoning. b) What type of membrane transport mechanisms might be involved? c) What problems might arise if the albatross were unable to rid itself of excess salt?

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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Which of the following modes of transport across biological membranes is driven by a chemical gradient? A) Facilitated diffusion B) Simple diffusion C) Active transport D) a and b only E) a, b, and c
Which is an example of passive transport? a) A membrane protein uses a hydrogen ion concentration gradient to transport sucrose against its concentration gradient and into a cell b) An ion channel permits sodium ions to diffuse through a cell membrane c) A pump uses ATP as an energy source to transport hydrogen ions out of a cell d) A cell takes in particles by pinocytosis e) The sodium potassium pump transports ions from one side of the membrane to the other, against a concentration gradient
Why are osmotically drive membrane processes (ODMPs) not been practically installed? What is the main theory to explain this?
4) Two membrane preparations have been made from the plasma membrane of erythrocytes (i.e red blood cells) and are being maintained in an isotonic buffer solution: (1) right-side-out membrane vesicles, in which the exoplasmic leaflet of the vesicle faces the buffer (equivalent in orientation to that of the exoplasmic leaflet of the intact plasma membrane); and (2) inside-out membrane vesicles in which the exoplasmic leaflet faces the interior of the vesicles and the cytoplasmic leaflet faces the buffer. 80 a. Right-side-out vesicles (ROVS) Very Low Fluorescence Inside-out vesicles (IOVS) Very High Fluorescence A newly discovered phosphoglyceride, called phosphotidylalanine is currently being studied. Annexin V is a protein that binds to phosphatidylalanine, which is one of the phospholipids present in the cell membrane preparations described above. Fluorescently labeled Annexin V is mixed with each vesicle preparation. The vesicles are washed to remove unbound Annexin V and then…
There are several different mechanisms of endocytosis. Some mechanisms are selective, some are not selective. Is clathrin-mediated endocytosis selective? a.) Yes, clathrin-mediated endocytosis is selective. b.) No, clathrin-mediated endocytosis is not selective.
Part 1: If a gated channel (not a pump) is specific for potassium ions and based on what you know about concentration gradients, when will the potassium ions move through the channel? a) Is gated channel transport using energy (ATP)? Part 2: Why does the sodium - potassium pump need to use energy (ATP)? a) Define active transport in your own words.
The studies of Palade and colleagues used pulse chase labeling with radioactively labeled amino acids and auto radiography to visualize the location of newly synthesized proteins in pancreatic acinar cells. These early experiments provided invaluable information on protein synthesis and intercompartmental transport. New methods have replaced these early approaches, but two basic requirements are still necessary for any assay to study this type of protein transport. What are they, and how do recent experimental approaches meet these criteria?
This graph shows the results of an experiment performed using frog eggs, whose membranes are nearly impermeable to water. A scientist injected some frog eggs with messenger RNA that coded for the production of membrane channel proteins called aquaporins. Control eggs were left untreated, so they did not produce aquaporins. Both groups of frog eggs were placed in a hypotonic solution and the volume of the eggs in each group was measured over a 5-minute period. The frog eggs with aquaporins increased in volume until finally rupturing, while the control eggs' volumes remained more constant. Using the graph and your knowledge of aquaporin channel proteins, which statements do you think are true? Select all that apply. relative volume 1.5 1.4 1.3 1.2 1.1 1.0 frog eggs with aquaporin 1 control eggs 2 x (rupture) 3 time (min) 4 -5
Receptor mediated endocytosis requires the presence of O a) carrier proteins that move molecules across the membrane into the cytosol. b) primary active transport pumps. c) specialized proteins on the membrane surface.
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