Concept explainers
To determine: The minimum energy cost, in terms of ATP equivalents expended, for the biosynthesis of the β-globin chain of hemoglobin, starting from a pool including all necessary amino acids, ATP and GTP.
Introduction:
The
To determine: The extra energy cost of making a protein, in which all the residues are ordered in a specific sequence, compared with the cost with the cost of making a polysaccharide containing the same number of residues but lacking the informational content of the protein.
Introduction:
The synthesis of polymeric biomolecules involves initiation, elongation, and termination stages. The amino acids activation before their assimilation into polypeptides and the posttranslational processing of the completed polypeptide play a crucial role in ensuring the suitable protein function.
To compare: The answer obtained with the direct energy cost of the biosynthesis of a linear glycogen chain of 146 residues in (α1→4) starting from a pool including glucose.
Introduction:
During protein synthesis, the protein must fold into its conformation, becomes active and ribosome components are recycled. Most proteins are processed after synthesis. Some amino acids may be removed and some can undergo chemical modifications.
To compare: The magnitude of the indirect costs to a eukaryotic cell of the biosynthesis of linear (α1→4) glycogen chains and the biosynthesis of polypeptides, in terms of the enzymatic machinery involved.
Introduction:
Most proteins are processed after synthesis. Some amino acids may be removed and some can undergo chemical modifications. During protein synthesis, the protein must fold into its conformation, becomes active and ribosome components are recycled.

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Chapter 27 Solutions
SAPLINGPLUS FOR PRINCIPLES OF BIOCHEMIS
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- 1. Which one is the major organic product obtained from the reaction of toluene and cyclopentanol in the presence of H3PO4, as shown here? CH3 CH3 CH3 CH3 CH3 H3PO4 A B с D E OHarrow_forwardAscorbic acid is a diprotic, with ionizations of: pKa1 = 4.10; pKa2 =11.80. You need to make 350 mL of an ascorbate buffer that is pH 5.05, andyou have 1.5 mM stock solutions of :ascorbic acidmonosodium ascorbatedipotassium ascorbateHow much 1.5 mM monosodium ascorbate do you use to make yoursolution? Answer in mL and report your value to three signicant gures.Please type only the number.arrow_forward1. What is the abbreviated form of the name for the molecule below. Punctuate it correctly ( image attached) 2. How much ATP is formed by the complete oxidation of lignocerate? Show stepsarrow_forward
- fill in the blank and circle the active site for each molecule. urgent!arrow_forwardfill in the table and circle the active sitearrow_forwardThe two half reactions for beginning and end of the electron transport chain are given below in standard form. Calculate & for the overall process. Using the Nernst equation (AG° = -n Fo, F= 96.485 kJ/volt mol), calculate AG°. Explain the need for a stepwise process in the electron transport chain. NAD* + H+ + 2 e- = NADH ½ 0г + 2H+ + 2е- = H20 = -0.32v E = +0.82Varrow_forward
- answer the questions and the example steps should be from carbohydrates glycolysis and citric acid cycle. Please put down reactions and structuresarrow_forwardidentify the general type of reaction catalyzed and an example step from glycolisis structure for each of the following enzymes/ co factor Kinase, isomerase, mutase, dehydrogenase, NAD+ , FADarrow_forwardfill in the blanks with the missing structures and give namesarrow_forward
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