Amino acid entry into cells can occur via uniporters or symporters. If the rate of anamino acid entry into the cell increases when the pH decreases, this suggests that itis:O being transported by a uniporterbeing actively pumped across the membrane against its concentration gradientbeing transported by a H* symportercrossing the membrane via simple diffusionnone of the above Botulism, a type of food poisoning, can affect motor neurons to result in paralysisand death. This is due to the introduction of a protease which effectively cleavesVAMP, a V-SNARE protein. What effect would this have on the motor neuron?Uncontrolled vesicle fusion with plasma membranePrevention of vesicle docking with plasma membranePremature release of vesicles from actin cagePrevention of vesicle movement to plasma membraneIncreased secretion of neurotransmitter

Transport of molecules across a membrane can take place via various processes, in lifeforms. Uniport…

Answered: Botulism, a type of food poisoning, can…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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Similar questions

What process best characterizes Ca2+ movement from the cytosol (low Ca2+ concentration) into the endoplasmic reticulum (high Ca2+ concentration)? O Calcium movement is spontaneous O Calcium movement involves active transport O Calcium movement occurs by facilitated diffusion using a transporter protein O Calcium movement does not require energy O Calcium movement occurs by passive diffusion A
The cytoplasm of a certain cell is composed of a solution that is 98% water, 2% solutes. Consider the solution shown in the beaker in this picture: FOOE OOS Foor solution. [Select] Cytoplasm is 98% water, 2% solutes. The solution in the beaker would be considered when compared to [Select] The plasma membrane is impermeable to solutes. Beaker solution is 98% water, 2% solutes the cell. We would expect that the cell would [Select] if it was placed in the would account for whatever changes might occur to the volume of the cytoplasm of the cell when it is placed in the solution.
List 2 functions of peripheral membrane proteins
What is a common feature of the voltage sensitive Ca++, Na+ and K+ ion channels? A single polypeptide sequence made up of 4 domains A voltage sensing S4 transmembrane domain A transmembrane S5-S6 hydrophobic subunit that binds the membrane A voltage sensing extracellular P loop
List 2 functions of peripheral membrane protein
What key ATPase is important for maintaining this positive (outside) and negative (inside) transmembrane potential?
What membrane transport family is this protein part of? What are the roles of the different domains of this protein?
Consider the amino acids on the image below. Which of the following amino acids would be most likely to be found in the part of an integral membrane protein that is located within the membrane? (Select all answers that apply.) Asparagine (Asn) Lysine (Lys) Phenylalanine (Phe) Valine (Val) Glutamic acid (Glu) Methionine (Met)
Which of the following can be used to describe both desmosomes and adherens junctions? Select all that apply. They provide strong attachments through linkage with actin cytoskeleton O They provide strong attachments through linkage with intermediate filaments Both of them function to hold adjacent cells firmly together O Types of cadherin proteins are used to mediate cell-cell adhesion
What are the three types of coated vesicles involved in membrane trafficking. Name three types and briefly explain their role in the transport of material
Facilitated diffusion and active transport are two different mechanisms that the cells use to transport molecules into and out of the cell. Compare and contrast these two types of cellular transport.
What sort of cellular changes would you expect a sailor sick with scurvy to experience? O Their collagen (an extracellular matrix component) would be diminished, resulting in fewer binding sites for integrins. The end result would be less adherent cells. O Their collagen (a cytoskeletal fiber) would be diminished, resulting in a loss of contractile motion within the cell, affecting both cell migration and muscle function.

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