
Concept explainers
(a)
Interpretation:
Amino acids which are more affected by light-dark adaptation.
Concept introduction:
Amino acid synthesis is the process in which amino acids are produced. The substrates of such processes are involved in a person’s diet or in the body itself. All living beings cannot synthesize all amino acids. Out of the 20 amino acids, humans can synthesize 11 amino acids only.
(b)
Interpretation:
Biochemical explanation for the observations.
Concept introduction:
Amino acid synthesis is the process in which amino acids are produced. The substrates of such processes are involved in a person’s diet or in the body itself. All living beings cannot synthesize all amino acids. Out of the 20 amino acids, humans can synthesize 11 amino acids only.
(c)
Interpretation:
Chemical that enhances the taste of white asparagus.
Concept introduction:
Amino acid synthesis is the process in which amino acids are produced. The substrates of such processes are involved in a person’s diet or in the body itself. All living beings cannot synthesize all amino acids. Out of the 20 amino acids, humans can synthesize 11 amino acids only.

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Chapter 24 Solutions
Biochemistry (Looseleaf)
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- 3. Which one of the compounds below is the major product formed by the reaction sequence shown here? CH3 + CH3NO2 NaOH H2, Ni ? nitromethane acetophenone OH OH HO HN- u x x x x Ph A HO -NH2 HO H Ph Ph Ph N- H B Ph NH2 D Earrow_forward4. Only ONE of the five compounds below can be prepared by an aldol condensation in which a single carbonyl compound is treated with base. Which one is it? To solve this problem, reverse the aldol condensation that formed each of these molecules to find out what two molecules came together to make the products. The one in which the two molecules are identical is the answer. Ph Ph ཚིག གནས ག ནཱ ཀ ན ཀནཱ A Ph H B Ph Ph H D Ph. Ph Ph E Harrow_forward5. Which one is the major organic product obtained from the following reaction sequence? First, equimolar amounts of cyclopentanone and LDA are mixed at -78°C. Then propionaldehyde (propanal) is added. Addition of aqueous acid completes the process. LDA, -78°C. 1. 2. H₂O* H A B H 0 D H H Earrow_forward
- 2. Which one is the major organic product obtained from the following reaction? NaOH, H₂O heat A B C D Earrow_forwardCH3CH2CHO + propanal PhCH2CHO 2-phenylacetaldehyde mixture of four products NaOH 10. In the crossed aldol reaction of propanal and 2-phenylacetaldehyde shown above, a mixture of four products will be formed. Which ONE of the compounds below will NOT be formed in this crossed aldol reaction? OH Ph A H OH OH Ph H B OH OH H H H Ph Ph C Ph D Earrow_forwardAn organic chemist ordered the wrong item. She wanted to obtain 1-hydroxy-2-butanone, butinstead ordered 2-hydroxybutyraldehyde. As a good biochemist, show how the organic chemistcould use biological catalysis to make her desired compound.arrow_forward
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