EBK BIOLOGY
4th Edition
ISBN: 8220102797376
Author: BROOKER
Publisher: YUZU
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Textbook Question
Chapter 5, Problem 2TY
Which of the following events can never be energetically favorable in a biological membrane and therefore will not occur spontaneously?
- a. the rotation of phospholipids
- b. the lateral movement of phospholipids
- c. the flip-flop of phospholipids to the opposite leaflet
- d. the rotation of membrane proteins
- e. the lateral movement of membrane proteins
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Ion channels are formed by a particular kind of membrane protein that allows the passage of a specific ion (or ions) under certain conditions. This type of protein is most likely a(n)
a. peripheral membrane protein with additional hydrophobic domains
b. integral membrane protein with a transmembrane domain
c. a cholesterol-like molecule that is positioned in the phospholipid bilayer
d. membrane phospholipid with hydrophilic head group
e. soluble enzyme anchored to a scaffolding protein on the cytoplasmic side of the plasma membrane
Which of the following statements are correct about how the complex biological matrix of the cell may affect protein folding, stability and function (select all that appy)?
A.
ATP tends to "bounce" along the surfaces of many proteins without forming a stable complex
B.
Proteins make up approximately 30% of the total volume of the cytoplasm in a typical cell
C.
Compettition between drug molecules and metabolites in the cytoplasm may cause unexpected drug side effects not seen with individual proteins in solution.
D.
Large protein complexes move faster through the cytoplasm than small metabolites.
E.
Complex intercations between proteins in the cell may significantly destabilize a protein compared to the isolated protein in water
Which of the following is NOT a function of membrane proteins?
a.Regulate the passage of ions
b.Act as carrier molecules for various solutes
c.Act as anchors or stabilizers for the cell membrane
d.Storage of cellular nutrients
Chapter 5 Solutions
EBK BIOLOGY
Ch. 5.1 - Prob. 1CCCh. 5.2 - Prob. 1CCCh. 5.2 - Prob. 2CCCh. 5.2 - Prob. 1BCCh. 5.3 - Prob. 1CCCh. 5.3 - Prob. 2CCCh. 5.4 - Prob. 1BCCh. 5.4 - Which molecule would you expect to pass through a...Ch. 5.4 - Prob. 2BCCh. 5.4 - Lets suppose the inside of a cell has a solute...
Ch. 5.5 - What is the purpose of gating?Ch. 5.5 - Prob. 1EQCh. 5.5 - Prob. 2EQCh. 5.5 - Prob. 3EQCh. 5.5 - Prob. 2CCCh. 5.6 - What is the function of the protein coat?Ch. 5 - Prob. 1TYCh. 5 - Which of the following events can never be...Ch. 5 - Lets suppose an insect, which doesnt maintain a...Ch. 5 - Prob. 4TYCh. 5 - Prob. 5TYCh. 5 - Prob. 6TYCh. 5 - Prob. 7TYCh. 5 - Prob. 8TYCh. 5 - Prob. 9TYCh. 5 - Large particles or large volumes of fluid can be...Ch. 5 - With your textbook closed, draw and describe the...Ch. 5 - Prob. 2CQCh. 5 - Prob. 3CQCh. 5 - Prob. 1COQCh. 5 - With regard to bringing solutes into the cell...
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- An artificial cell consisting of an aqueous solution enclosed by a selectively permeable membrane is immersed in a beaker containing a different solution. The membrane is permeable to water and to the simple sugars glucose and fructose but impermeable to the disaccharide sucrose. Draw solid arrows to indicate the net movement of solutes (glucose and fructose) into or out of the cell. b. Is the solution outside the cell isotonic, hypotonic, or hypertonic to the cell? c. Draw a dashed arrow to show the net movement of water, if any d. Will the artificial cell shrivel, swell, or stay the same?arrow_forwardMembrane proteins perform the following functions EXCEPT one. Which One? A. form the glycocalyx B. act as receptor proteins C. form pores to allow the passage of small solutes D. behave as enzymes.arrow_forwardThe tails of the phospholipids of the plasma membrane are composed of _____ and are _____? a. phosphate groups; hydrophobic b. fatty acid groups; hydrophilic c. phosphate groups; hydrophilic d. fatty acid groups; hydrophobicarrow_forward
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