Homework Answers
11) answer is 2
The enzyme removes two hydrogen atoms (2H+ and 2e-) from its substrate and 2 ATPs will produced.
12) answer is glycine
glycine which has two indistinguishable hydrogen atoms on the alpha carbon. Therefore, all alpha amino acids but glycine can exist in either of two enantiomers, called L or D-amino acids, which are mirror images of each other.
13) threonine has alcohol side group
14) phenylalanine has aromatic group
15) glutamic acid or glutamate (Glu). Their side chains have carboxylic acid groups
16) methionine
Synthesis of a protein starts with the binding of ribosomal subunits and initiation factors to the mRNA. In this process, the initiation factor eIF2 is bound to initiator tRNA (met-tRNAi) and not to other tRNAs. Upon recognition of the initiation codon AUG, translation starts with the methionine that is bound to the initiator tRNA.
17) option A is correct
18) A
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IFor each molecule of FADH_2 that donates electrons to the electron transport chain, ATPs will be...
11.Which of the following mutations would most likely to disrupt the structure of an α-helix? Cys...
11.Which of the following mutations would most likely to disrupt the structure of an α-helix? Cys to Ala Lys to Arg Glu to Gly Val to Leu 12.Which amino acid combination is the most preferred to occupy positions 1 and 4 in an α-helix? Glu and Lys Phe and Pro Lys and Arg Asp and Glu 13.If each turn in the standard alpha helix extends 5.4 A and there are 3.6 amino acid residues per turn, how many amino acids...
5. Which of the following molecules form complex structures linked by covalent bonds through Lys, HyLys,...
5. Which of the following molecules form complex structures linked by covalent bonds through Lys, HyLys, or His residues? A) Collagen B) Alpha keratin C) Hemoglobin D) Myoglobin E) Beta barrels 6. Which of the following correlates to the classic experiment demonstrating that reduced and denatured RNase A could refold into the native form? A) Disulfide bonds do not stabilize folded proteins B) Reducing agents denature proteins C) 1° structure can determine 3° structure D) Urea cleaves disulfide bonds E)...
PLEASE COMPUTER TYPED* OR VERY CLEAR HANDWRITING with details 1. Radioactive (14C) uridine (lots of it)...
PLEASE COMPUTER TYPED* OR VERY CLEAR HANDWRITING with
details
1. Radioactive (14C) uridine (lots of it) is added to a growing culture of bacteria for 10 seconds and then the drug rifamycin is added (rifamycin blocks the initiation of transcription, but not continued elongation of RNA polymerases that have already begun transcribing). At two-minute intervals, 1 ml samples are removed and placed on ice. The bacteria are lysed (broken open) and an enzyme is added that will chew up all...
(18 pts) Answer True or False for each of the following questions (a) An amino acid...
(18 pts) Answer True or False for each of the following questions (a) An amino acid is in the zwitterionic form only if the pll is well below 7 (b) Salting out takes advantage of the fact that the solubility of proteins varies with concentration. (c) Proteins usually consists of amino acids of both L-isomers (d) Essentially all a-helices found in proteins are left-handed globular protein is thermodynamically the most stable structure. ( Isoclectric focusing can be used to separate...
Cyw Ala Ατα Ile Ausn Lou Asp aly Lys Ser Which molecule below is asubunit of...
Cyw Ala Ατα Ile Ausn Lou Asp aly Lys Ser Which molecule below is asubunit of peptide chains a. Acetic acid b. Alanine O. ATP d. Gracil Report the charge on most aqueous aspartie acid molecules at pH-7. Report the approximate p values for the amino acid whose titration curve is shown below (note there may be more slots for answer than answers). A) Value 1 B) Value 2 c) Value 3 c) Value 4 The structure of a rare...
C,D, and E i need help with. 17. The following peptide forms part of Human Hemoglobin...
C,D, and E i need help with.
17. The following peptide forms part of Human Hemoglobin subunit gammaa Asp-Leu-Lys-Gly-Thr-Phe-Ala A) Which amino acids are likely to be on the side of peptid acids are likely to be on the side of peptide that faces the interior of the protein? Insert your answer leu, Gto.Pne, Ala B) Which are likely to be facing the aqueous environment? Insert your answer Asp, lys, Thr Draw the structure of the sequence at pH7.4. Using...
Protein molecules in solution can be separated from each other by taking advantage of their net...
Protein molecules in solution can be separated from each other by taking advantage of their net charges. In the electric field between two electrodes, a positively charged particle moves toward the negative electrode and a negatively charged particle moves toward the positive electrode. This movement, known as electrophoresis, varies with the strength of the electric field, the charge of the particle, the size and shape of the particle, and the buffer/polymer gel combination through which the protein is moving. The...
Namer A) alternating sugar and nitrogen bases liked by peptide bonds B) complimentary bases held ...
Namer A) alternating sugar and nitrogen bases liked by peptide bonds B) complimentary bases held together by hydrogen bonds 6) The backbone of a niacleic acid strand consists of: alternating sugar and phosphate groups linked by phosphate ester bonds D) alternating nitrogen bases and phosphate groups linked by amide bonds Q 7) 刁what amino acids are involved in the following tripeptide? NH-CH-C-NH-CH-- CH NH OH D) His-Lys-Phe A) Tyr-His-Lys C) Lys-His-Tyr B) Lys-His-Phe 8) Which list contains only neutral polar...
1. Please provide correct solution. Thank you. Acid rain is a serious environmental problem. A sample...
1. Please provide correct solution. Thank you.
Acid rain is a serious environmental problem. A sample of rainwater collected in the Sierra Mountains had an H+ concentration of 0.1 mmol/L. The pH of this sample was 0 1 3 4 100 Rank the elements carbon (C), hydrogen (H), oxygen (O), and phosphorus (P) in decreasing order number of covalent bonds they usually form. C > P > N > O >H P > O > C > N > H...
t How are donaturation and varovalo airterent a. Rydrolysis resulte to the formation of water. Hydrolysis...
t How are donaturation and varovalo airterent a. Rydrolysis resulte to the formation of water. Hydrolysis only takes place in the cytopa c. Hydrolysis results in breakingole d. Hydrolysis results in breaking ovalent bo How is folding related to function? • Folding and function are not related.. Proper folding results in propertune 0. Proper folding results in reduced un roper folding results in arratiefunct Molecules that a t folding are called a. Foldons which cellular environment is . Cytoplasm c....
5. Which of the following molecules form complex structures linked by covalent bonds through Lys, HyLys, or His residues? A) Collagen B) Alpha keratin C) Hemoglobin D) Myoglobin E) Beta barrels 6. Which of the following correlates to the classic experiment demonstrating that reduced and denatured RNase A could refold into the native form? A) Disulfide bonds do not stabilize folded proteins B) Reducing agents denature proteins C) 1° structure can determine 3° structure D) Urea cleaves disulfide bonds E)...
PLEASE COMPUTER TYPED* OR VERY CLEAR HANDWRITING with
details
1. Radioactive (14C) uridine (lots of it) is added to a growing culture of bacteria for 10 seconds and then the drug rifamycin is added (rifamycin blocks the initiation of transcription, but not continued elongation of RNA polymerases that have already begun transcribing). At two-minute intervals, 1 ml samples are removed and placed on ice. The bacteria are lysed (broken open) and an enzyme is added that will chew up all...
(18 pts) Answer True or False for each of the following questions (a) An amino acid is in the zwitterionic form only if the pll is well below 7 (b) Salting out takes advantage of the fact that the solubility of proteins varies with concentration. (c) Proteins usually consists of amino acids of both L-isomers (d) Essentially all a-helices found in proteins are left-handed globular protein is thermodynamically the most stable structure. ( Isoclectric focusing can be used to separate...
Cyw Ala Ατα Ile Ausn Lou Asp aly Lys Ser Which molecule below is asubunit of peptide chains a. Acetic acid b. Alanine O. ATP d. Gracil Report the charge on most aqueous aspartie acid molecules at pH-7. Report the approximate p values for the amino acid whose titration curve is shown below (note there may be more slots for answer than answers). A) Value 1 B) Value 2 c) Value 3 c) Value 4 The structure of a rare...
C,D, and E i need help with.
17. The following peptide forms part of Human Hemoglobin subunit gammaa Asp-Leu-Lys-Gly-Thr-Phe-Ala A) Which amino acids are likely to be on the side of peptid acids are likely to be on the side of peptide that faces the interior of the protein? Insert your answer leu, Gto.Pne, Ala B) Which are likely to be facing the aqueous environment? Insert your answer Asp, lys, Thr Draw the structure of the sequence at pH7.4. Using...
Namer A) alternating sugar and nitrogen bases liked by peptide bonds B) complimentary bases held together by hydrogen bonds 6) The backbone of a niacleic acid strand consists of: alternating sugar and phosphate groups linked by phosphate ester bonds D) alternating nitrogen bases and phosphate groups linked by amide bonds Q 7) 刁what amino acids are involved in the following tripeptide? NH-CH-C-NH-CH-- CH NH OH D) His-Lys-Phe A) Tyr-His-Lys C) Lys-His-Tyr B) Lys-His-Phe 8) Which list contains only neutral polar...
1. Please provide correct solution. Thank you.
Acid rain is a serious environmental problem. A sample of rainwater collected in the Sierra Mountains had an H+ concentration of 0.1 mmol/L. The pH of this sample was 0 1 3 4 100 Rank the elements carbon (C), hydrogen (H), oxygen (O), and phosphorus (P) in decreasing order number of covalent bonds they usually form. C > P > N > O >H P > O > C > N > H...
t How are donaturation and varovalo airterent a. Rydrolysis resulte to the formation of water. Hydrolysis only takes place in the cytopa c. Hydrolysis results in breakingole d. Hydrolysis results in breaking ovalent bo How is folding related to function? • Folding and function are not related.. Proper folding results in propertune 0. Proper folding results in reduced un roper folding results in arratiefunct Molecules that a t folding are called a. Foldons which cellular environment is . Cytoplasm c....
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