What is a lipid bilayer? Draw a schematic diagram of a lipid bilayer.
What is a lipid bilayer? Draw a schematic diagram of a lipid bilayer.
Homework Answers
A lipid bilayer is a bilayer made up of lipids, mainly phospholipids. Phospholipids have a hydrophilic head and a hydrophobic tail which goes into the core of the bilayer.
This bilayer serves as a biological membrane for most of the living cells. It acts as a barrier for preventing external harmful substances from entering into the cell, The layer is impermeable to ions, and helps the cells maintain the ion conc. gradient. This layer also serves as the cell nucleus membrane.
Below is a general pic depicting the lipid bilayer.
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What is a lipid bilayer? Draw a schematic diagram of a lipid
bilayer.
CELL BIOLOGY Chapter 10 The function of a lipid bilayer How is the lipid bilayer formed...
CELL BIOLOGY Chapter 10 The function of a lipid bilayer How is the lipid bilayer formed Know the different types of phospholipids and any unique features and locations (if there are any) Know the overall structure of a phospholipid How does a lipid membrane stay fluid? How to lipid move in a membrane? Just as important, know the movement lipids are unable to do in the absence of flipase. Alberts.-.Molecular.Biology.Of.The.Cell.5th.Ed IS THE TEXT
8. Protons are unable to cross the lipid bilayer because: a) the lipid bilayer is too...
8. Protons are unable to cross the lipid bilayer because: a) the lipid bilayer is too hydrophilic b) protons are nonpolar c) protons are too small d) the lipid bilayer is only permeable to polar substances e) none of the above  9. The side chain of an amino acid labeled ‘basic’ is most likely ______ at cellular pH and it therefore ______ water. Fill in the blanks with the word pair that correctly completes the sentence. a) negatively-charged; b)...
discuss the functions of various lipid molecules. explain how a lipid bilayer forms, the functions that...
discuss the functions of various lipid molecules. explain how a lipid bilayer forms, the functions that it serves, and the variability in its structure Identify the different types of membrane proteins (integral, peripheral linked and associated) and how they associate with the lipid bilayer. identify the secondary structural features of proteins that allow them to associate with the lipid bilayer TE k Explain why a plot of velocity versus substrate concentration is curved. define reaction orders and their relationship to...
What kinds of things can pass through a lipid bilayer? What things can’t?
What kinds of things can pass through a lipid bilayer? What things can’t?
1. Lets compare two lipid bilayer systems: one composed of phospholipids having saturated acyl chains 20...
1. Lets compare two lipid bilayer systems: one composed of phospholipids having saturated acyl chains 20 carbons in length, and the other having acyl chains of the same length but with cis double bonds at C-5, C-8, C-11 and C-14. a. Lets assume that all of the head-groups are phosphatidylethanolamine. Draw a representative lipid from each bilayer system. b. Which lipid bilayer system will have the highest Tm? Explain.
Protein folding and lipid-bilayer formation result in decreased entropy for a protein molecule and bilayer components....
Protein folding and lipid-bilayer formation result in decreased entropy for a protein molecule and bilayer components. The decrease entropy of the surrounding entropy is balanced by a large increase in the OTemperature Salt solutions Pressure Water molecules Water's ability to dissolve a wide variety of molecules is important, but more important is the hydrophobic effect, which drives the aggregation of nonpolar molecules and plays a role in the folding of proteins and formation of lipid bilayers. What forces drive the...
A cell membrane consists of a lipid bilayer, which is a double layer of phospholipids. Each...
A cell membrane consists of a lipid bilayer, which is a double layer of phospholipids. Each phospholipid has a hydrophilic phosphate head and a hydrophobic lipid tail. These phospholipids are not chemically bound to one another, but rather maintain their structure due to the fact that the lipid tails do not like water. They're hydrophobic^2. If they all buddy up, then they can all stay dry. (See figure.) One way to deal with this quantitatively is to realize that there...
The fluidity of a lipid bilayer will be decreased by: A) increasing the number of unsaturated...
The fluidity of a lipid bilayer will be decreased by: A) increasing the number of unsaturated positions. B) increasing the temperature. C) decreasing the temperature. D) decreasing the length of the alkyl chains.
Draw the following schematic circuit diagram and label them accordingly: (a) Draw the schematic for a...
Draw the following schematic circuit diagram and label them accordingly: (a) Draw the schematic for a circuit in which a 10 V battery, a 100 resistor, and a 220 resistor are all in series with one another. Determine the voltage across each resistor and the current owing through each resistor. (b) Draw the schematic for a circuit in which a 10 V battery, a 100 resistor, and a 220 resistor are all in parallel with one another. Determine the voltage...
Order the following compounds from most permeable (will easily pass through the lipid bilayer) to least...
Order the following compounds from most permeable (will easily pass through the lipid bilayer) to least permeable (will not pass through the lipid bilayer). Water [Select] Adenine (a large polar compound) [Select] Ammonium ion [Select CO2 Select
discuss the functions of various lipid molecules. explain how a lipid bilayer forms, the functions that it serves, and the variability in its structure Identify the different types of membrane proteins (integral, peripheral linked and associated) and how they associate with the lipid bilayer. identify the secondary structural features of proteins that allow them to associate with the lipid bilayer TE k Explain why a plot of velocity versus substrate concentration is curved. define reaction orders and their relationship to...
1. Lets compare two lipid bilayer systems: one composed of phospholipids having saturated acyl chains 20 carbons in length, and the other having acyl chains of the same length but with cis double bonds at C-5, C-8, C-11 and C-14. a. Lets assume that all of the head-groups are phosphatidylethanolamine. Draw a representative lipid from each bilayer system. b. Which lipid bilayer system will have the highest Tm? Explain.
Protein folding and lipid-bilayer formation result in decreased entropy for a protein molecule and bilayer components. The decrease entropy of the surrounding entropy is balanced by a large increase in the OTemperature Salt solutions Pressure Water molecules Water's ability to dissolve a wide variety of molecules is important, but more important is the hydrophobic effect, which drives the aggregation of nonpolar molecules and plays a role in the folding of proteins and formation of lipid bilayers. What forces drive the...
A cell membrane consists of a lipid bilayer, which is a double layer of phospholipids. Each phospholipid has a hydrophilic phosphate head and a hydrophobic lipid tail. These phospholipids are not chemically bound to one another, but rather maintain their structure due to the fact that the lipid tails do not like water. They're hydrophobic^2. If they all buddy up, then they can all stay dry. (See figure.) One way to deal with this quantitatively is to realize that there...
Order the following compounds from most permeable (will easily pass through the lipid bilayer) to least permeable (will not pass through the lipid bilayer). Water [Select] Adenine (a large polar compound) [Select] Ammonium ion [Select CO2 Select
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