1. Label the hydrophobic and hydrophilic sections of the lipid bilayer below: ex
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Question
1. Label the hydrophobic and hydrophilic sections of the lipid bilayer below: extracellular. space. cytoplasm . 2. In the image above.. a. Assume that the membrane is permeable to the molecules. Which direction will the molecules diffuse: into or out of the cell? b. Now assume that the membrane is impermeable to the molecules. Will the cell gain or lose water? 3. Is the cell in a hyper-, hypo-, or isotonic environment? 4. Describe the difference between active and passive transport. 5. How do the properties of the amino acids affect an integral protein's position within the bilayer? 6. Besides a concentration gradient, what other type of gradient across for this? do cells maintain their plasma membranes?What type of transport proteins are responsibleExplanation / Answer
1.Head portion of lipid bilayer is hydrophilic - Round head
Tail portion of lipid bilayer is hydrophobic - Line or strand part
2.A. Into the cells. Molecules move from high concentration to low concentration.
B. Move outside of cells . Into the cells. Water Molecules present inside the cells has high concentration compare to outside of cells.
3. It is hypertonic solution. The solution contains higher concentration of molecules.
4. Active process require energy molecules like ATP. It moves against the concentration gradient.
Passive process does not require any energy molecules like ATP. It moves based on concentration gradient.
5. Intergal proteins contains high composition of hydrophobic amino acids.
Hydrophobic amino acids hates the water molecules so it packed inside the bilayer and act has channel proteins.
6. Electrochemical gradient. Carrrier proteins
7. 1. High
2. Low
8. Exergonic
Spontaneous
Negative delta G
Energy released
Catabolic
More stable products
9. Competitive inhibitor resemblence to substrate molecules so it bind to the enzyme site where the substrate binds to enzymes. Inhibitor binds to enzymes.
Non Competitive inhibitor it binds to both enzymes as well as ES complex.
10. All energy is used to generate the ATP and NADPH synthesis.
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