Which of the following molecules will diffuse most quickly across a lipid bilayer membrane? A. H2O...
Which of the following molecules will diffuse most quickly across a lipid bilayer membrane? A. H2O B. O2 C. H2PO4 D. glucose E. Na+
Homework Answers
The correct answer is option B that is O2.
Molecule which has a non polar covalent bond that leads to no partial charge on the atoms.
Lipid bilayer is a hydrophobic membrane and non polar molecules diffuse fastest.
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Which of the following molecules will diffuse most quickly
across a lipid bilayer membrane? A. H2O...
Which of the following molecules will diffuse most quickly across a lipid bilayer membrane? a. H2O...
Which of the following molecules will diffuse most quickly across a lipid bilayer membrane? a. H2O b. Na+ c. Glucose d. H2PO4 e. O2 (I've isolated it down to H2O and O2, but I'm not sure which one diffuses faster than the other and why. Thanks!)
3. Write the relative permeabilites for these molecules across a plain lipid bilayer (10 pts) Na*,...
3. Write the relative permeabilites for these molecules across a plain lipid bilayer (10 pts) Na*, water, urea, Cl, glucose Size of Items: toe < foot< leg < person
Which of the below molecules would be expected to be membrane permeable and freely pass through a lipid bilayer? Select...
Which of the below molecules would be expected to be membrane
permeable and freely pass through a lipid bilayer?
Select all that apply
Which of the below molecules would be expected to be membrane permeable and freely pass through a lipid bilayer? Select all that apply. O=C=0 Nat NEN K+ * H-C-OH Ο Ι Ι HHHHHH
Question 1 Which of the following are likely to diffuse through the plasma membrane? glucose K+...
Question 1 Which of the following are likely to diffuse through the plasma membrane? glucose K+ Cl- H20 Na+ CO2 02 lipid Question 4 Which is(are) true about transport across the membrane? Channels can perform either active or passive transport Charged molecules move according to their electrochemical gradients Movement of an ion down its gradient requires energy Transporters are faster but less selective than channels Question 6 In the coupled transport of Na+ and glucose, the transporter O is an...
Each component gives membranes different purposes. For example, the lipid component provides a permeability barrier for...
Each component gives membranes different purposes. For example, the lipid component provides a permeability barrier for the cell – meaning, since the lipid bilayer has a nonpolar region from the hydrophobic lipid tails, any charged molecule will have a difficult time getting through. Therefore, small, uncharged molecules (i.e. nonpolar) can diffuse through the membrane the best due to the membrane properties. Small, partially charged molecules (i.e. polar) can diffuse across the membrane as well, but large polar molecules or fully...
Which of the following statements on membrane transport is NOT correct: A. To transport of solutes...
Which of the following statements on membrane transport is NOT correct: A. To transport of solutes in the unfavorable direction across the membrane, pumps couple the process with either ATP hydrolysis, light absorption, electron transport, orother favorable transport process. B. Dissolved gases like O2, CO2, or NO simply diffuse across a membrane bilayer C. Hydrophilic molecules require assistance by membrane proteins to cross the membrane bilayer. D. The rate of transport facilitated by transporters is faster, but less selective for...
The lipid bilayer is most permeable to phosphate ions water molecules potassium ions small proteins Compared...
The lipid bilayer is most permeable to phosphate ions water molecules potassium ions small proteins Compared to water, a lipid bilayer freely allows the passage of glucose is impermeable to ions prefers negatively charged molecules is permeable to small proteins Cell membranes have only phosopholipids are formed from liposomes have proteins with different kinds of attachments none of the above
Which of the following would produce the most fluid lipid bilayer? O phospholipids with tails of...
Which of the following would produce the most fluid lipid bilayer? O phospholipids with tails of 26 carbon atoms and two double bonds O phospholipids with fully saturated tails of 20 carbon atoms O large amounts of cholesterol O phospholipids with tails of 20 carbon atoms and two double bonds o phospholipids with fully saturated tails of 24 carbon atoms Which of the following can influence the rate at which a molecule will move across a lipid bilayer? (Check all...
Which of these statements about the composition of membranes is true?
Which of these statements about the composition of membranes is true?A) All biological membranes contain cholesterol.B) Free fatty acids are major components of all membranes. C) The inner and outer membranes of mitochondria have different protein compositions.D) The lipid composition of all membranes of eukaryotic cells is essentially the same.E) The lipid: protein ratio varies from about 1: 4 to 4: 1Membrane proteins:A) ere sometimes covalently attached to lipid moieties:B) are sometimes covalently attached to carbohydrate moieties.C) are composed of...
12. Rank the following molecules in their ability to freely diffuse across the membrane (from 1-...
12. Rank the following molecules in their ability to freely diffuse across the membrane (from 1- likely to 4- very unlikely) Large uncharged polar molecules, hydrophobic molecules, small uncharged polar molecules, ion.
3. Write the relative permeabilites for these molecules across a plain lipid bilayer (10 pts) Na*, water, urea, Cl, glucose Size of Items: toe < foot< leg < person
Which of the below molecules would be expected to be membrane
permeable and freely pass through a lipid bilayer?
Select all that apply
Which of the below molecules would be expected to be membrane permeable and freely pass through a lipid bilayer? Select all that apply. O=C=0 Nat NEN K+ * H-C-OH Ο Ι Ι HHHHHH
Question 1 Which of the following are likely to diffuse through the plasma membrane? glucose K+ Cl- H20 Na+ CO2 02 lipid Question 4 Which is(are) true about transport across the membrane? Channels can perform either active or passive transport Charged molecules move according to their electrochemical gradients Movement of an ion down its gradient requires energy Transporters are faster but less selective than channels Question 6 In the coupled transport of Na+ and glucose, the transporter O is an...
Which of the following would produce the most fluid lipid bilayer? O phospholipids with tails of 26 carbon atoms and two double bonds O phospholipids with fully saturated tails of 20 carbon atoms O large amounts of cholesterol O phospholipids with tails of 20 carbon atoms and two double bonds o phospholipids with fully saturated tails of 24 carbon atoms Which of the following can influence the rate at which a molecule will move across a lipid bilayer? (Check all...
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