Pk2 - Samenvattingen, Aantekeningen en Examens

The chirality of an amino acid results from the fact that its α carbon: A) has no net charge. B) is a carboxylic acid. C) is bonded to four different chemical groups. D) is in the L absolute configuration in naturally occurring proteins. E) is symmetric. C) is bonded to four different chemical groups. Of the 20 standard amino acids, only ___________ is not optically active. The reason is that its side chain ___________. A) alanine; is a simple methyl group B) glycine; is a hydrog...

BIOCHEMISTRY PACOP EXAM 4 SETS VERIFIED COMBINED STUDY SET WITH ALL CORRECT ANSWERS INDICATED GRADED A+ What two enzymes are used to bypass the pyruvate kinase reaction of glycolysis? I. pyruvate carboxylase II. PEP carboxykinase III. Fructose biphosphatase IV. Glucose-6-phosphate Isoelectric or pI is the pH midway between pKa values on either side of isoelectric species where amino acids exits as neutral species. Lysine has three pK values. pK1=2.2, pK2 = 9.2 and pK3 =10.8. What is the...

Biochemistry ACS 2023 Exam With 100% Complete Solutions Nonpolar, aliphatic AA's - ANSWERS gly, ala, pro, val, leu, ile, met Aromatic AA's - ANSWERS phe, Tyr, trp What wavelength do aromatic aa's absorb light? - ANSWERS 280 nm Polar, uncharged aa's - ANSWERS Ser, Thr, Cys, Asp, Glu Are Disulfide bonds hydrophobic or hydrophilic? - ANSWERS hydrophobic Polar, Positively charged (basic) aa's - ANSWERS ...

Alghren APK2100C Exam #1 chapters 1,2,4,5

Biochemistry ACS Exam Questions With Complete Answers Nonpolar, aliphatic AA's - CORRECT ANSWERS gly, ala, pro, val, leu, ile, met Aromatic AA's - CORRECT ANSWERS phe, Tyr, trp What wavelength do aromatic aa's absorb light? - CORRECT ANSWERS 280 nm Polar, uncharged aa's - CORRECT ANSWERS Ser, Thr, Cys, Asp, Glu Are Disulfide bonds hydrophobic or hydrophilic? - CORRECT ANSWERS hydrophobic Polar, Positively charged (basic) aa's - ...

APK2100C Exam 1 Study Guide

In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes. nucleoid A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: A) DNA. B) photosynthetic capability. C) plasma membranes. D) ribosomes. E) the nucleus the nucleus In eukaryotes, the nucleus is enclosed by a double membrane called the: A) cell membrane. B) nuclear envelope. C) nucleolus. D) nucleoplasm. E) nucl...

Fumaric acid has two conjugate base forms, with pKa1=3.02 and pKa2=4.48, at what pH value αHA- got its largest fractions? a. 3.02 b. 4.48 c. 3.75 d. 5.41 c. 3.75 For a diprotic system, the equation for the fraction of A2-(αA2-) is a. αA2- = K1K2/([H+]2+[H+]K1+K1K2) b. αA2- = [H+]2/([H+]2+[H+]K1+K1K2) c. αA2- = K1K2/([H+]+[H+]K1+K1K2) d. αA2- = [H+]2/([H+]+[H+]K1+K1K2) a. αA2- = K1K2/([H+]2+[H+]K1+K1K2) A 25.00mL solution of 0.0316M benzylamine was titratd with 0.02...

how do amino acids differ from one another? shape, charge, size, hydrogen-bonding character, chemical reactivity, and hydrophobic character collagen is a major protein in connective tissue of vertebrates. it consists of three left-handed helical chains coiled around each other in a right-handed super-coil. what vitamin is required for collagen formation? the vitamin is required for what Vitamin C and hydroxylation reaction immunoglobin is critical for bodys defense. will addition...

In a bacterial cell, the DNA is in the: A) cell envelope. B) cell membrane. C) nucleoid. D) nucleus. E) ribosomes. nucleoid A major change occurring in the evolution of eukaryotes from prokaryotes was the development of: A) DNA. B) photosynthetic capability. C) plasma membranes. D) ribosomes. E) the nucleus the nucleus 00:34 01:10 In eukaryotes, the nucleus is enclosed by a double membrane called the: A) cell membrane. B) nuclear envelope. C) nucleolus. D) nuc...