Glucose moves into red blood cells via facilitated diffusion using the glucose transporter. Glu transporter, also known as GLUT, is a uniporter. How does a uniporter work? (A Uniporter transports one solute at a time in the same direction. (B Uniporter transports two different solutes at the same time in the same direction. Uniporter transports two different solutes in opposite directions. D Uniporter transports two similar solutes at the same time in the same direction.

Glucose moves into red blood cells via facilitated diffusion using the glucose transporter. Glu transporter, also known as GLUT, is a uniporter. How does a uniporter work? (A Uniporter transports one solute at a time in the same direction. (B Uniporter transports two different solutes at the same time in the same direction. Uniporter transports two different solutes in opposite directions. D Uniporter transports two similar solutes at the same time in the same direction.

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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Why is it important that glucose be converted to glucose-6-phosphate once glucose enters a cell? Select one: a. This form is easier for cells to metabolize. b. The cells can easily excrete this molecule. c. Glucose can't diffuse out of the cell if it is in this form. d. It can now cross the plasma membrane. e. It becomes a long-term storage molecule for glucose.
would substances be able to pass through the plasma membrane if the phospholipi tails of the plasma membrane were oth satueated fatty acids? why or why not, explain?
A cell creates a H+ gradient across a membrane- in other words, a situation is created were the concentration of H+ is higher on one side then the other of a membrane. How can this H+ concentration gradient be used to do work (that the cells needs to do)?
K+ [Select] [Select] A Na+ Primary active transport is being shown by transporter [Select] which uses [Select] ATP [Select] B The transported molecules in this mechanism are being moved [Select] to move Glucose active transport is being shown by transporter [Select] which uses the gradient. Secondary to move against the gradient. When both the molecules move through a transporter in the same direction as in B, this type of transport is called antiport.
Diatomic oxygen (O2) exhibits which of the following membrane transport movements? A. it is not able to cross the membrane by passive transport, because it is big, polar, and inorganic it is not able to cross the membrane by active transport, because it is big, polar, and inorganic it is able to cross the membrane by facilitated diffusion, because it is small, polar, and organic it is able to cross the membrane by active transport, because it is big, nonpolar, and organic it is able cross the membrane by simple diffusion, because it is small, nonpolar, and inorganic
Protein: glucose transporter, Role: Sugar transport across the plasma membrane. Where is this protein synthesized? Be as specific as possible and briefly explain your choice
As a cell grows its plasma membrane expands. Does this involve endocytosis or exocytosis? ATP is not directly involved in the functioning of a co-transporter. Why, then, is co-transport considered active transport?
If a skeletal muscle has depleted its stores of ATP how will the altered transport properties of the following transporters affect cytosolic ion concentrations (increase, decrease, no change) relative to normal? Skeletal Muscle Cell With Depleted ATP Stores Ion transporter Cytosolic K+ Cytosolic Na+ Cytosolic Ca2+ NKA NCX SERCA
secondary active transport depends on which of the following principals a. sodium is pumped pout of the cells against a concentration gradient by [primary active transport b. sodium moves out the cells with a concentration gradient c. primary active transport is necessary to pump sodium into the cell from higher to lower concentration d. diffusion causes sodium to move our of the cell
While endocytosis and exocytosis refer to the direction in which a vesicle moves into and out of a cell respectively, it is important to think about what is being moved with and within the vesicles. To demonstrate how this process is utilized in human cells we will focus on the human body's insulin response. The purpose of the insulin response is to create a pathway for glucose entry into cells by releasing glucose transporters into the membrane. Cell Type #1- insulin producers: In humans, pancreatic B-cells create steroid insulin that can be packaged into vesicles starting at the ER. These vesicles are prepared for exocytosis so that the insulin can be released from the pancreatic B - cells and get into the bloodstream when signaled to do so. When glucose is present in the blood stream these cells will release the pre-packed insulin into the blood stream. Cell Type #2- insulin responders: Other cells do not produce insulin but instead respond when they have received the insulin signal…
The transport of a certain molecule exhibits the following characteristics: (1) The molecule moves down its concentration gradient; (2) at concentrations above a given level, there is no increase in the rate of transport; and (3) cellular energy is not required for transport to occur. Which type of transport process is at work?
Channels are an example of transporters with alternating gates; in other words, channels change conformation upon cargo binding to release the cargo on the opposite side of the membrane. True or False? Polar solutes must be ‘re-hydrated’ by the interactions with the transporter to allow for rapid transport. True or False? The sodium potassium pump is an example of an antiport. True or False?