Question 321 ptsIn the operation of the sodium-potassium ATPase transporterthis transporter (or pump) is electrically neutral (does not lead to a change in themembrane potential)the pump transports one potassium ion for every sodium ion (a 1:1 ratio)the transport of Na+ out of the cell can occur even in the absence of energyphosphorylation and dephosphorylation are respectively associated with the sodiumand potassium transport steps

Answered: Question 32 1 pts In the operation of…

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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Question 12 Identify the key step in regulation of protein hormone release. O A. Exocytosis B. Signal sequence cleavage O C. Diffusion through the cell membrane D. Kinase activation of biosynthetic enzymes E. Golgi transport
QUESTION 27 Which of the following is INCORRECT about the elimination of NH4 O a. Marine invertebrate excrete NHT in the form of urea O b. All amino groups are collected in glutamate OC NH, is a very toxic substance O d. Birds remove excess ammonium ions as uric acid QUESTION 28 All of the following are CORRECT regarding arginase EXCEPT: O a. Catalyzes the hydrolysis of arginine Ob. Present only in vertebrates Oc Present in the mitochondrial matrix O d. Regenerate ornithine
QUESTION 34 The membrane is selectively permeable to all of the following molecules EXCEPT: Water Sodium Glucose Oxygen
QUESTION 39 The metabolic reaction pathway that is responsible for the generation of the most reducing equivalents is :
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Question 2 Aconitase catalyzes the conversion of Citrate to Isocitrate in the TCA cycle. The standard free energy change (AGO') for this reaction is +6.7 kJ/mol. The observed free energy change (AG) for the reaction in pig heart mitochondria is +0.8 kJ/mol. The ratio of [isocitrate]/[citrate] in these mitrochondria is: Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a 10 b 1 100 d 0.01 e 3 f 0.33 0.10 0.25 i
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QUESTION 6 Two chambers, X and Y, are separated by a semi-permeable membrane that allows water and urea, but not glucose, to pass through. At the start, chamber X contains a solution of urea in wate and chamber Y contains a solution of glucose in water. The molarity (measure of concentration) of urea in chamber X is the same number as the molarity of glucose in chamber Y. Which of the following will occur after sufficient time? There will be overall diffusion of glucose from X to Y until glucose concentration in Y exceeds glucose concentration in X. There will be overall diffusion of glucose from X to Y until glucose concentration is equal in both chambers. There will be overall diffusion of glucose from Y to X until glucose concentration in X exceeds glucose concentration in Y. There will be overall diffusion of glucose from Y to X until glucose concentration is equal in both chambers. Glucose will not diffuse across the membrane.
Question 16 Match the phrase with the enzynie or cofactor v water soluble and moves between enzymes a kinase v tend to stay with an enzyme as a prosthelic group b; FAD t phosphatase v Dephosphorylation is spontaneous, or catalyzed by d. NADH v catalyzes phosphorylation of an enzyme Moving to another question will save this response.
QUESTION 1 The Wnt signaling pathway component, Dsh, effects the action of B catenin by: O A. inhibiting the function of axin in the destruction complex O B. blocking GSK-3B from joining the destruction complex O C. stimulating ubiquitination of B catenin O D. causing its release into the cytosol from the plasma membrane complex O E. causing an increase in phophorylation of B catenin QUESTION 2 PCR can be used to identify the breakage points of mtDNA that are joined to form a mitochondrial genome with a deletion. This techni que uses: O A. two primers outside the deleted region; a long PCR extension segment. O B. one primer within the deleted region and one primer outside the deleted region; a long PCR extension segment O C. one primer within the deleted region and one primer outside the deleted region; a short PCR extension segment O D. two primers outside the deleted region; a short PCR extension segment O E. two primers within the deleted region; a short PCR extension segment

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