Homework Answers
The properties Energetically unfavourable the diffusion of phospholipids across the membrane are
1. Lateral diffusion.
2.Membrane fluidity.
And the rest/ remainig does not affect.
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What property of membranes makes the transverse diffusion of phospholipids across the membrane energetically unfavorable? a....
MEMBRANE STRUCTURE AND TRANSPORT ACROSS CELL MEMBRANES 1. An organelle that is characterized by extensive, folded...
MEMBRANE STRUCTURE AND TRANSPORT ACROSS CELL MEMBRANES 1. An organelle that is characterized by extensive, folded membranes and is often associated with ribosomes 2. Label the following diagram Qutsde of cel LE nside of cell 3. List 4 functions of the plasma membrane c. d. 4. Complete the table below with the role cach component of the plasma membrane plays Plasma membrane components Role in the membrane Phospholipid Bilayer Cholesterol Glycopeoteins Glycolipids Protein Receptor Site Protein channel Protein Carrier 5....
which movement of membrane phospholipids in slowest? lateral diffusion D Question 3 1 pts Which movement...
which movement of membrane phospholipids in slowest? lateral
diffusion
D Question 3 1 pts Which movement of membrane phospholipids in SLOWEST? O lateral diffusion O scramblase-mediated movement O transbilayer diffusion flip-floppase catalyzed movement D | Question 4 1 pts
Besides diffusion, another force that may work on ions as they move passively across a membrane...
Besides diffusion, another force that may work on ions as they move passively across a membrane is O gravity O attraction to an opposite charge on the other side O attraction to the hydrophobic tails of the phospholipids
Question 1 1 pts Which of the following is the most common property of membrane lipids?...
Question 1 1 pts Which of the following is the most common property of membrane lipids? O a. They contain two hydrophobic tails. ob. They are sphingolipids. O c. They are amphipathic. O d. They are phospholipids. Question 2 1 pts Which of the following is most likely to contain a region of 20 hydrophobic amino acids? a. A peripheral membrane protein. b. A transmembrane protein. O c. A GPI-anchored protein. O d. A cytosolic protein. Question 3 1 pts...
Your answer is incorrect. Try again. Membranes contain lipids: O that contain saturated fatty acid residues....
Your answer is incorrect. Try again. Membranes contain lipids: O that contain saturated fatty acid residues. O which can affect the rigidity of the membrane. O with hydrophilic heads oriented to the interior of the membrane. o with hydrophobic tails oriented at the surface of the membrane. Click if you would like to Show Work for this question: Open Show Work LINK TO TEXT x Your answer is incorrect. Try again. A protein moves an amino acid across a membrane...
A correct distinction between facilitated diffusion and active transport of a substance across a biological membrane...
A correct distinction between facilitated diffusion and active transport of a substance across a biological membrane is that . . . A. active transport requires conformational changes in the transport protein associated with the transport process, and facillitated diffusion does not. B. active transport requires integral membrane protein to carry out the transport, and facillitated diffusion does not. C. facilitated diffusion depends on an existing energy gradient acting on the transported substance, while active transport makes such a gradient. D....
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion...
FILL THE BLANK The membranes of fishes that live in extreme cold have a high proportion of _________________ hydrocarbon tails, enabling them to stay fluid.For example, cold-adapted organisms such as winter wheat increase the percentage of _________________ phospholipids in their membranes in the autumn to prevent the membranes from solidifying during winter.There are two major populations of membrane proteins: ___________ and _____________.Integral proteins penetrate the hydrophobic interior of the lipid bilayer, usually completely spanning the membrane as ________________ proteins.________________ proteins...
9. Some diseases result from defective transport across the membrane. For example, cystic fibrosis results when...
9. Some diseases result from defective transport across the membrane. For example, cystic fibrosis results when a chloride ion transporter does not function. Which of the following is affected when this transporter does NOT function? the electrical gradient of the cell neither the chloride gradient nor the electrical gradient of the cell the chloride concentration gradient both the chloride concentration gradient and the electrical gradient of the cell 10. Which way does the water move if the cell is in...
20. Word bank: Hydrophili Triacylglycerols Fatty acids Hydrophobic Amylopectin Phospholipids Glucose can form large polymers that...
20. Word bank: Hydrophili Triacylglycerols Fatty acids Hydrophobic Amylopectin Phospholipids Glucose can form large polymers that are held together by Animals store glucose in long, branched polymers called glucose in long, linear polymers called called the enzyme for degrading Steroids Hydrophilic Cholesterol Cellulose Glycoproteins bonds. Plants store or as branched polymers Animals can digest these polysaccharides, but most lack which serves as dietary fiber Lipids are be stored or broken down for energy down to produce energy. Lipids are stored...
1. Like phospholipids, lipopolysaccharides have a hydrophilic head and a hydrophobic tail. True or false 2....
1. Like phospholipids, lipopolysaccharides have a hydrophilic head and a hydrophobic tail. True or false 2. The outer membrane of Gram negative bacteria contains lipopolysaccharides T or F 3. Biofilms and pure culture are formed by only one type of microorganism T or F 4. Any given antibiotic will have the same minimum inhibitory concentration (MIC) against any test microorganism. T or F 5. Production of antibiotics by the microorganism is not affected by the culture conditions T or F...
MEMBRANE STRUCTURE AND TRANSPORT ACROSS CELL MEMBRANES 1. An organelle that is characterized by extensive, folded membranes and is often associated with ribosomes 2. Label the following diagram Qutsde of cel LE nside of cell 3. List 4 functions of the plasma membrane c. d. 4. Complete the table below with the role cach component of the plasma membrane plays Plasma membrane components Role in the membrane Phospholipid Bilayer Cholesterol Glycopeoteins Glycolipids Protein Receptor Site Protein channel Protein Carrier 5....
which movement of membrane phospholipids in slowest? lateral
diffusion
D Question 3 1 pts Which movement of membrane phospholipids in SLOWEST? O lateral diffusion O scramblase-mediated movement O transbilayer diffusion flip-floppase catalyzed movement D | Question 4 1 pts
Besides diffusion, another force that may work on ions as they move passively across a membrane is O gravity O attraction to an opposite charge on the other side O attraction to the hydrophobic tails of the phospholipids
Question 1 1 pts Which of the following is the most common property of membrane lipids? O a. They contain two hydrophobic tails. ob. They are sphingolipids. O c. They are amphipathic. O d. They are phospholipids. Question 2 1 pts Which of the following is most likely to contain a region of 20 hydrophobic amino acids? a. A peripheral membrane protein. b. A transmembrane protein. O c. A GPI-anchored protein. O d. A cytosolic protein. Question 3 1 pts...
Your answer is incorrect. Try again. Membranes contain lipids: O that contain saturated fatty acid residues. O which can affect the rigidity of the membrane. O with hydrophilic heads oriented to the interior of the membrane. o with hydrophobic tails oriented at the surface of the membrane. Click if you would like to Show Work for this question: Open Show Work LINK TO TEXT x Your answer is incorrect. Try again. A protein moves an amino acid across a membrane...
20. Word bank: Hydrophili Triacylglycerols Fatty acids Hydrophobic Amylopectin Phospholipids Glucose can form large polymers that are held together by Animals store glucose in long, branched polymers called glucose in long, linear polymers called called the enzyme for degrading Steroids Hydrophilic Cholesterol Cellulose Glycoproteins bonds. Plants store or as branched polymers Animals can digest these polysaccharides, but most lack which serves as dietary fiber Lipids are be stored or broken down for energy down to produce energy. Lipids are stored...
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