See Hi Which one of the following choices correctly orders the molecules according to their ability to diffuse through a lipid bilayer, beginning with the one that crosses the bilayer most readily? Choose one: O A. 02> glucose > NH3 OB. Glucose > NH3> O2 OC. Glucose > O2 > NH3 O D. NH3> O2> glucose E. O2>NH3> glucose OF. NH3> glucose > O2

See Hi Which one of the following choices correctly orders the molecules according to their ability to diffuse through a lipid bilayer, beginning with the one that crosses the bilayer most readily? Choose one: O A. 02> glucose > NH3 OB. Glucose > NH3> O2 OC. Glucose > O2 > NH3 O D. NH3> O2> glucose E. O2>NH3> glucose OF. NH3> glucose > O2

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter4: Cell Structure

Section: Chapter Questions

Problem 4SA: Cell membranes consists mainly of ________ and ________ . a. lipids; carbohydrates c. lipids;...

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Cell membranes consists mainly of ________ and ________ . a. lipids; carbohydrates c. lipids; phospholipids b. phospholipids; protein d. phospholipids; ECM
What is the order of the molecules on the following list according to their ability to diffuse through a lipid bilayer, beginning with the one that crosses the bilayer most readily. 1. Ca²+ 2. CO₂ 3. Ethanol 4. Glucose 5. RNA 6. H₂O A. Ethanol, Glucose, CO₂, H₂O, RNA, Ca²+ B. CO₂, Ethanol, Glucose, H₂O, Ca²+, RNA C. RNA, Glucose, Ethanol, H₂O, CO₂, Ca²+ D. Ca²+, CO₂, H₂O, Ethanol, Glucose, RNA *Recall that RNA stands for ribonucleic acids, and acids are negatively charged molecules in solution
Which molecule would you predict moves through a lipid bilayer most rapidly without the help of a transport protein? Group of answer choices A NH2SO2CH3 B C6H12O6 C C2H4 D CH3OH E C2H5OH
Most materials entering the cell pass across the cell membrane by diffusion. In general, the larger the molecule, the slower the molecule diffuses across the membrane. The graph shows the sizes of several molecules that can diffuse across a lipid bilayer. Use the bar graph to answer the following question. Which of the following is a logical prediction based on the graph shown? Size of Molecules Carbon dioxide Glucose Oxygen Water 50 100 150 200 Size (daltons) Cells contain more glucose than oxygen O B Glucose molecules must not be able to cross the cell membrane Carbon dioxide crosses the cell membrane faster than glucose O D Glucose crosses the cell membrane faster than water Molecule
I Hydrophobic molecules and (at a slow rate) very small uncharged polar molecules can diffuse through the lipid bilayer. II. Energy is usually supplied by ATP dehydration dunng active transport Select one: Both statements are FALSE Only the second statement is TRUE. Only the first statement is TRUE Both statements.are TRUE
the lipid bilayer of a plasma membrane most ranh A) hydrocarbons. B) amino acid. Oose the most correct answer (5 8. Which of the following would likely move through 1.Celi membrane is composed of a bilayer of: 1.Cell membrane is composed of a bilayer or: A) Phospholipids. 9. Which of the following contains hydrolytic enzymes? the lipid bilayer of a plasma membrane most rapidly? B) Steroids. C) Fatty acids. C) Glucose. D) K+. 9. Which of the following contains hydrolytic enzymera A) Lysosome. B) Endoplasmic reticulum C) Mitochondrion. D) Golgi apparatus. D) Triglycerides. 2. All of the following contain amino acids except A) hemoglobin. B) cholesterol. C) antibodies. D) enzymes. 3. What is the chemical reaction mechanism by which cells make polymers from monomers? A) phosphodiester linkages. B) hydrolysis. C) dehydration reactions. D) ionic bonding of monomers T 10. Which one of the following is/are a function of celI membrane proteins? A) Enzymatic activity. B) Signal transduction. C)…
Which of the following does not apply to lipid asymmetry? a.It arises in the endoplasmic reticulum. b.It arises due to the flip-flop movement of specific phospholipids to the cytosolic monolayer. c.It is preserved throughout vesicular transport. d.It depends on the activity of flippase.
. Cholesterol is an integral part of plasma membranes.Based on its structure, where is it found in themembrane?a. on the extracellular surfaceb. embedded with the phospholipid headsc. within the tail bilayerd. attached to the intracellular surface
Choose all that aplly that are TRUE for the lipid bilayer:Negative mark is given to incorrect answer(s). a. The polar head groups of the bilayer are positively charged. b. Individual lipid molecules in one face (monolayer) of the bilayer cannot diffuse (flip-flop) to the other monolayer and must be catalyzed by a lipid transporter called flippase. c. The bilayer is stabilized by covalent bonds between neighbouring phospholipid molecules. d. Polar, but uncharged, compounds readily diffuse across the bilayer. e. Individual lipid molecules are free to diffuse laterally on the surface of the bilayer.
Discuss the permeability of the phospholipid bilayer to the molecules and ions listed below. Is the bilayer freely permeable, somewhat permeable, or impermeable to each of these? 1. OH- 2. H* 3. 0₂ 4. C6H12O6 5. H₂O 6. CO₂ Which is not a major function of the protein in cell membranes? They are important for membrane transport They are important for cell-to-cell joining They function as enzymes They regulate membrane fluidity Which is not true about cell membranes? They frequently flip-flop from one side of the membrane to the other - They can move freely within one side of the bilayer Fatty acid tails of phospholipids form the membrane interior The interior of the bilayer is hydrophoic
Cholesterol is an integral part of plasma membranes. Based on its structure and characteristics, where is it found in the membrane? O on the extracellular surface Owithin the tail portion of the bilayer O attached to the intracellular surface O embedded with the phospholipid heads Previous Page Page 3 of 7
Most materials entering the cell pass across the cell membrane by diffusion. In general, the larger the molecule, the slower the molecule diffuses across the membrane. The graph shows the sizes of several molecules that can diffuse across a lipid bilayer. Use the bar graph to answer the following question. Which of the following is a logical prediction based on the graph shown? Size of Molecules Carbon dioxide Glucose Oxygen Water 50 100 150 200 Size (daltons) Molecule