Inside an osmosis bag", Bag A is a 50% glucose solution andinside Bag B is a 20% glucose solution. Both bags are putinto a beaker containing pure (100%) water.* - Osmosis bags are membranes that let water passthrough them but not glucose.A. Bag A will increase in weightB. Bag B will increase in weightC. Both bags will increase in weightD. Both bags will decrease in weightE. Both bags will remain the same

Osmosis refers to the process of movement of solvent molecules from a region of higher concentration…

Answered: Inside an osmosis bag", Bag A is a 50%…

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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7. Use your knowledge of osmosis to explain your experimental results. Hint: The tubing is made of a selectively permeable membrane, so you know osmo- sis must have happened, but you should explain the situation in terms of molecules moving into and out of the tube. 8. A salt solution that contains 20% salt contains 80 % water. 9. If you were told that a type of cell contained about 2% salt, what would happen if you put the cells into a solution of 18% saline? It would swell because 18076 of Saline is cn hypotonic solution and cell hes salt concentration and low water but in saline low salt and high water is present so th water will enter the cell by osmosis and swells up the cell.
D. OSMOSIS WITH LIVING PLANT CELLS C. a. Procedure This experiment is designed to demonstrate the principles of osmosis with living plant tissues. Using a corkborer, bore two equal-sized cylinders of freshly cut raw potato. Feel them and note the degree of firmness. Place one potato piece in a culture dish containing enough five percent salt solution to cover the potato completely. Place the second potato piece in a culture dish containing the same amount of distilled water. After about 20 minutes, examine both pieces of potato and note any changes in their degree of firmness. b. Results SOLUTION AROUND POTATO 5% Salt Distilled water doesn't Molle 78 FIRMNESS OF POTATO AFTER 20 MINUTES soggy Firm Questions 1. Give an explanation for your results with the 5% salt solution.
Which of the following is incorrect about membrane transport systems? a. Glucose transport in red blood cells is a uniport system b. The Na+/K+ ATPase is an antiport system c. The H+/K+ ATPase is an active transport system d. The chloride-bicarbonate exchanger in erythrocytes is a uniport system
The gap junction channel formed by connexin 43 in cardiac muscle has which of the following properties? A. Is highly selective for sodium ions. B. Is opened and closed by a gate on the intracellular side of S4 C. Is non-selective for a wide variety of ions. D. Is opened and closed by positive charges on 54 E. None of the above
1. An artificial membrane with a pore size of 24 Angstrom (Å) separates two chambers (X and Y) in glassware containing equal amounts of fluid. a. 2.0 M NaCI is present in chamber X, whereas 5 percent KI is present in chamber Y. (Na diameter: 1.96 Å; Cl diameter: 3.7 Å; KI diameter: 2.8 Á) Y b. The albumin in chamber X is 3%, whereas the potato starch in chamber Y is 2%. (Albumin diameter: 38 Å; Starch: 3O0k -1 million Å)
the constant balancing act to remain an appropriate amount of solutes and water inside each cell a. endocytosis b. exocytosis c. metabolism d. osmoregulation e. facilitated diffusion
You are working with cells that have an internal solute concentration of 5mM solute. This solute is large and ionized. You place them in a medium that has a concentration of 7.7 mM solute. What will happen? a. The cells will swell initially, then return to their original size. b. The cells will shrink in size. c. I do not expect anything to happen. d. The cell will burst.
1. Presented below is an image of a semipermeable sac, containing 4% NaCl, 9% glucose, and 10% albumin, suspended in a solution with the following composition: 10% NaCl, 10% glucose, and 40% albumin. Assume the sac is permeable to all substances except albumin. Using the key choices, insert the letter indicating the correct event in the answer blanks. Key Choices: A. Moves into the sac B. Moves out of the Solution contains: sac C. Does not move 10% Naci 10% Glucose _1. Glucose 40% Albumin _2. Water 3. Albumin _4. Sodium Chloride -Sac contains: 4% Naci 9% Glucose 10% Albumin
Mucopolysaccharides form the cementing substances between cells and tissue structures where they also act as shock absorbers. Why? A. Mucopolysaccharides have a structure that is made up of proteins and carbohydrates and can easily form a matrix that surrounds cells. B. Mucopolysaccharides have a negative charge that cushions against shock by having a matrix of repulsive molecules C. Mucopolysaccharides form flexible structures which can accommodate a large amount of water because the sugars are not covalently linked and forms a cushion surrounding cells. D. Mucopolysaccharides are natural adhesives. E. Mucopolysaccharides are large molecules.
You are working on a team that is designing a new drug. For this drug to work, it must enter the cytoplasm of specific target cells. Which of the following would be a factor that determines whether the molecule selectively enters the target cells? O the phospholipid composition of the target cells' plasma membrane O the nonpolar, hydrophobic nature of the drug molecule the similarity of the drug molecule to other molecules that are transported into the target cells the concentration of the drug molecule that is transported in the blood Submit Request Answer
Match the type of substance with the likely mechanism used to move material across the cell membrane. v steroid A. osmosis v amino acid B. endocytosis v large protein outside the cell C. facilitated diffusion protein hormone to be secreted from cell D.exocytosis oxygen gas E simple diffusion monosaccharide carbon dioxide positive or negative ion_ water
A mutation where Protein kinase A and Ca2+/calmodulin kinase 2 is inhibited a. Increased Cytosolic Calcium b. Decreased Cytosolic Calcium c. No change in Cytosolic Calcium d. Slow progressive decrease in cytosolic calcium

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