Answered: 26. Almost all proteins are composed… | bartleby

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter22: Organic And Biological Molecules

Section: Chapter Questions

Problem 83E

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Question

26. Almost all proteins are composed from a set of about
amino acids.
20
d. 50
a. 4
27.
a. 5
b. 10
amino acids are considered essential.
b. 10
C.
C.
15
d. 20

28. An amino acid that has an indole group side chain.
a. Trp
29. Which of the following is the simplest amino acid?
b. Phe
C.
Tyr
d.
Pro
Ala
b. Gly
Val
d. Pro
a.
C.

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1. The Ability of a substance to exist in different crystalline form a. Lattice b. Polymorphism c. Crystallization d. Amphoterism 2. A drug can exert its pharmacological effect only if it is a. Protein bound b. Protein unbound c. Free drug d. Both B & C e. Both A & C 3. In order for the drug to be ready and available for absorption, it must be release first from its dosage form with the exception of: a. Capsule b. Tablet c. Solution d. Suspension 4. All of the following are true, except a. Solubility increase with decrease particle size b. Solubility increase with increase surface area c. Solubility increase with increase particle size d. Solubility decrease with decrease surface area 5. The rate in which the drug appears in the bloodstream is also known as a. Half-life b. Potency c. Bioavailability d. Area under the curve
______ amino acids are considered essential.a. 5b. 10c. 15d. 20
Identify the reaction type. a. acid base b. dehydration c. hydration d. amide synthesis e. hydrolysis (in base) f. esterification g. hydrolysis (in acid)
a. Sn1b. E1C. E2
3 amino acids joined together by two peptide bonds.a. Dipeptideb. Tripeptidec. Tetrapeptided. Polypeptide An amino acid that can form disulfide bondsa. Cysteineb. Methioninec. Cystined. Serine
True or false The hydroxyl group found in an organic compound is responsible for its basicity. Aromatic hydrocarbons are considered polar and has high affinity to water. Acidic drugs are a class of chemical compounds that normally have high hydrophilicity and negative charges. Amino groups attached to hydrocarbons are considered polar which may be responsible for its solubility. Lipophilic drugs have a faster rate of absorption than hydrophilic drugs.
Almost all proteins are composed from a set of about _____ amino acids.a. 4b. 10c. 20d. 50 ______ amino acids are considered essential.a. 5b. 10c. 15d. 20 An amino acid that has an indole group side chain.a. Trpb. Phec. Tyrd. ProWhich of the following is the simplest amino acid?a. Alab. Glyc. Vald. ProWhich of these will not give a blue solution with Ninhydrin testa. Prob. Phec. Alad. CysA neutral molecule with a positive and negative electrical charge.a. Isoelectric pointb. Zwitterionsc. Bufferd. Amphoteric3 amino acids joined together by two peptide bonds.a. Dipeptideb. Tripeptidec. Tetrapeptided. PolypeptideAn amino acid that can form disulfide bondsa. Cysteineb. Methioninec. Cystined. SerineWhich of the following is not a property of amino acidsa. Bufferb. Isoelectric pointc. Zwitterionsd. Insoluble in waterThe protein primary structure is held together bya. Hydrogen bondsb. Disulfide bondsc. Peptide bondsd. Protein bonds
8 What is the organic product? A. T B. + I HI D. ? I
1. An amine is characterized by what functional group? a. -CO2CH3 b. -NH2 d. -CHO e. -OH c. -CO2H 2. Which of the follow ing is an akohol? a. NaOH d. CH CH 20OH b. H3CNH2 c. H3C-C-CH3 с. 3. When two alcohols undergo a self condensation, what is formed? a. liquid alcohol b. a ketone d. an aklehyde an ether e. с. an ester
C. Amides 1. Amidation a. Acetic acid + ammonia
RESET 4. A peptide bond is classified as a(n) C. phosphate bond. A. ester B. amine D. amide E. none of these Cancel Done 中。
It is a component of nylon 66. a. Phthalic acid b. Lauric acid O c. Benzoic acid d. Adipic acid e. Ethanoic acid Primary amine can be prepared by a. Reacting an alkyl halide with sodium azide. b. Reacting an amide with water under heat. O c. Reacting alkyl halide with NaCN followed by LiAlH4 in ether, then with water. O d. Reacting carboxylic acid with R-NH2 and NaBH4. Which of the following will give a positive reaction with Tollen's reagent? a. All of the above b. Butanone O c. 3-pentanone Od. Pentanal O e. Butanal

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