Suppose you discover a new bacterium that has a concentration of 15 nM Cu2+ inside the cell, and 1 mM Cu2+ outside the cell. When a facilitated diffusion Cu2+ transporter opens, you expect the Cu2+ ions to flow....(Remember, to move with/down a concentration gradient is to move from high to low concentration; against/up a concentration gradient is low to high.)- ○ inside the cell, with its concentration gradient- ○ inside the cell, against its concentration gradient- ○ outside the cell, with its concentration gradient- ○ outside the cell, against its concentration gradient

Diffusion is the movement of silute particles or molecules from the region of higher concentration…

Answered: Suppose you discover a new bacterium…

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

The salt concentration in the cytosol of body cells of seawater fish is lower than it is in their environment. This causes the fish to continually lose water. To compensate for this loss, seawater fish continuously ingest water and rely on membrane-bound proteins on their gills for the removal of salt ions back to the environment. Which of the following describes the most likely mechanism of membrane transport used by seawater fish to remove the salt ions? A B с D exocytosis simple diffusion active transport facilitated diffusion
When a bacterial cell is placed in a hypotonic, environment, the cell wall restrains the pressure resulting from the greater osmolarity of the cytoplasm. (Use one word in the blank space. Spelling must be correct to earn the point. The word "osmotic" is NOT an answer that that will earn credit for this question; there is another word that is required.)
How does each of the following molecule pass through the plasma membrane in the described scenarios? A. Both simple diffusion and facilitated diffusion B. facilitated diffusion C. simple diffusion D. active transport 1. Molecular oxygen (O2) and carbon dioxide (CO2) traveling downtheir concentration gradient. 2. inorganic ions traveling down their concentration gradient 3. glucose traveling against its concentration gradient 4. water molecules (H2O) traveling down their concentration gradient
Demonstrate the listed processes
why is the molecular machinery for membrane fusion is important for any cell that utilizes vesicular transport
For a lab on diffusion and osmosis, where a egg yolk was placed in a cup water the following question asks Consider a scenario in which the size of an egg yolk remains unchanged after in water soaking for an hour. What are two possible explanations as to why this occurs? What would two reasons be for the yolk to be unchanged after a hour in water?
Why do most molecules require the assistance of proteins to cross the cellular membrane? What factors limit diffusion of molecules across the cellular membrane?
(50) During an experiment , equal aliquots of Escherichia coil and Staphylococcus aureus are separately sonicated at the same level to mechanically disrupt bacterial cells. E.coli cells are disrupted , but their is minimal disruption of S, aureus cells. Which of the following bacterial structures best explains this difference? (A) Cytoplasmic membrane (B) Outer membrane (C) Peptidoglycan layer (D) Phospholipid bilayer (E0 Polysaccharide capsule
You add 1 tsp. of sugar to a warm water solution and wait for the sugar molecules to diffuse across a screen gradient. You then add 1 tsp. of sugar to a cold-water solution. What will happen to the rate of diffusion of the cold water solution, when compared to the warm water solution rate? O It will decrease (slow down O It will stay the same O It will increase (speed up)
The following table depicts the rate of transport of a molecule into a cell as the external concentrations are changed. Based on what you know about the characteristics of membrane transport, the molecule is most likely transported by: a) passive transport b) simple diffusion across the membrane c) facilitated diffusion d) active transport
Which of the following is most likely to pass through the cell membrane via facilitated diffusion? A B с D a polar molecule moving against the concentration gradient a nonpolar molecule moving along the concentration gradient a nonpolar molecule moving against the concentration gradient a polar molecule moving along the concentration gradient
What could happen to the proteins of cells treated with high amounts of free radicals that would effect the diffusion of those treated cells?

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