5 Passive Transport And Facilitated Diffusion - Quantitative Human Physiology | Biology+

Course

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Study Pack

Set 1: Physical Foundations Ii: Electrical Force Potential Capacitance and Current

Set 2: Chemical Foundations I: Chemical Energy and Intermolecular Forces

Set 3: Chemical Foundations Ii: Concentration and Kinetics

Set 4: Diffusion

Set 5: Electrochemical Potential and Free Energy

Set 6: Cell Structure

Set 7: Dna and Protein Synthesis

Set 8: Protein Structure

Set 9: Biological Membranes

Set 10: Passive Transport and Facilitated Diffusion

Set 11: Active Transport: Pumps and Exchangers

Set 12: Osmosis and Osmotic Pressure

Set 13: Cell Signaling

Set 14: ATP Production I: Glycolysis

Set 15: Atp Production Ii: Tca Cycle and Oxidative Phosphorylation

Set 16: Atp Production Iii: Fatty Acid Oxidation and Amino Acid Oxidation

Set 17: Origin of the Membrane Potential

Set 18: The Action Potential

Set 19: Propagation of the Action Potential

Set 20: Skeletal Muscle Mechanics

Set 21: Contractile Mechanisms in Skeletal Muscle

Set 22: Neuromuscular Junction and Ec Coupling

Set 23: Muscle Energetics Fatigue and Training

Set 24: Smooth Muscle

Set 25: Organization of the Nervous System

Set 26: Cells Synapses and Neurotransmitters

Set 27: Cutaneous Sensory Systems

Set 28: Spinal Reflexes

Set 29: Balance and Control of Movement

Set 30: the Chemical Senses

Set 31: Hearing

Set 33: Autonomic Nervous System

Set 34: Overview of the Cv System and Blood

Set 35: Plasma and Red Blood Cells

Set 36: White Blood Cells and Inflammation

Set 37: The Heart As a Pump

Set 38: Cellular Basis of Cardiac Contractility

Set 39: the Cardiac Function Curve

Set 40: Vascular Function: Hemodynamics

Set 41: Microcirculation and Solute Exchange

Set 42: Regulation of Perfusion

Set 43: Integration of Cardiac Output and Venous Return

Set 44: Regulation of Arterial Pressure

Set 45: Mechanics of Breathing

Set 46: Lung Volumes and Airway Resistance

Set 47: Gas Exchange in the Lung

Set 48: Oxygen and Carbon Dioxide Transport

Set 49: Acid Base Physiology I Bicarbonate Buffers and Respiratory Compensation

Set 50: Control of Ventilation

Set 51: Anatomy and Renal Overview

Set 52: Glomerular Filtration

Set 53: Tubular Reabsorption and Secretion

Set 54: Concentration and Dilution of Urine

Set 55: Mouth and Esophagus

Set 56: The Stomach

Set 57: Intestinal and Colonic Motility

Set 58: Pancreatic and Biliary Secretion

Set 59: Digestion and Absorption of the Macronutrients

Set 60: Energy Balance and Regulation of Food Intake

Set 61: General Principles of Endocrinology

Set 62: Hypothalamus and Pituitary Gland

Set 63: The Thyroid Gland

Set 64: The Endocrine Pancreas

Set 65: The Adrenal Cortex

Set 66: The Adrenal Medulla

Set 67: The Calcitropic Hormones

Set 68: Calcium and Phosphorus Homeostasis Ii

Set 69: Female Reproductive Physiology

Set 2 5 Passive Transport And Facilitated Diffusion

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Set 2 5 Passive Transport And Facilitated Diffusion

(Multiple Choice)

Free

You have the ability to measure the transport rate, Q, across a membrane as a function of the concentration of transported solute on the source side, S. How would you experimentally determine the K_m for transport?

A) It is the solute con centration at one-h alf the m ximum transport rate
B) It is the X -intercept on a plot of 1 /Q against 1 / S
C) It is the Y- interc ept o n a p lot of 1/Q against 1/ S
D) It is the solute concentration when Q = Q max
E) It is -R times the slope of the plot of ln Q vs 1/T

Answer

(Multiple Choice)

Free

A facilitated diffusion carrier has a K_m = 5 mM and a maximum transport rate of Q_max. At a
solute concentration of 10 mM, its transport rate is about

A) 0.25 Q_max
B) 0.5 Q_max
C) 0.67 Q_max
D) 2 Q_max
E) Q _max

Answer

(Multiple Choice)

Free

A mem brane separates a solution with a concentration CL on the left and CR on the right. The free energy change for movem ent of solute to the right is zero when

A) C_L < C_R
B) C_L = RT Ln C_L / C_R
C) C _R = RT Ln C_L / C_R
D) C _L= C_R
E) p = 0

Answer