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On average, how many amino acids engaged in predominantly hydrophobic ?-helices does it take to cross the hydrophobic part of the membrane?A) about 10 amino acidsB) about 20 amino acidsC) at least 40 amino acidsD) about 2 - 3 amino acidsE) None of these are correct.
11. In a protein sequence, which repeated sequence over a twenty amino acid stretch would most likely lead to insertion of a transmembrane domain into a lipid bilayer.A) Serine-Threonine-Alanine-HistidineB) Glycine-Proline-Proline-SerineC) Valine-Leucine-Iosleucine-LeucineD) Arginine-Lysine-Proline-ArginineE) Proline-Lysine-Proline-AlanineExplain:12. Which group of amino acids would most likely be found in an enzyme active site?A) Serine-Threonine-Alanine-HistidineB) Glycine-Proline-Alanine-SerineC) Valine-Leucine-Iosleucine-SerineD) Histidine -Lysine-Glutamic Acid -ArginineE) Proline-Lysine-Glycine-AlanineExplain:22. During isoleucine synthesis, excess end product of the metabolic pathway shuts down the pathway.How does this negative feedback benefit the cell?A) Decreases the levels of threonineB) Increases the amount of end product.C) Prevents a cell from wasting chemical resourcesD) Increases the activity of threonine deaminaseE) Increases the availability of glycine in the cell.
Batch and continuous sterilisation
The standard reduction potential (Eo') for the reduction of fumarate is +0.03V. The Eo' for the reduction of FAD in a given protein that accepts the electrons from succinate is -0.40V. Given the reaction.
For each of amino acids, is the side chain hydrophobic, polar but uncharged, positively charged, or negatively charged at physiological pH?
how to Calculate the fraction of Vmax. For an enzyme which obeys Henri-Michaelis-Menten kinetics.
A male baby who appeared normal at birth began to develop lethargy, hypothermia and apnea at forty-two hours after delivery. The infant was found to have normal levels of blood glucose,
Mr. Chow has problem digesting milk products due to a deficiency in the enzyme lactase. His doctor has provided him with a solution of lactase to consume every time he eats a dairy product.
The internal structure of the cells of many protists is much more complex than cells of multicellular organisms. Does this mean that protists is engaged in more complex activities than muticellular organisms?
Assume if heritability of male tail length in a bird was known to be 0.5, and female birds impose a selection differential of five cm on male tail length because they are too much attracted to long tails.
Estimate the proportion of various phenotypes in matings between individuals that are blood type AB and type O, both of whom are Se/se.
Use living organisms to control pests are often used in many nations. What factors must be taken into account in using fungi to combat agricultural pests?
Recognizes true statements of cholesterol and its fluidity. Cholesterol increases membrane fluidity that otherwise contains mainly long chain saturated fatty acids.
Please describe how one might search for chemical structure, biologic function relationships, involving small molecular weight lipophylic compounds. Provide one example.
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