ESSENTIAL CELL BIOLOGY (LL)-TEXT
ESSENTIAL CELL BIOLOGY (LL)-TEXT
5th Edition
ISBN: 9780393680331
Author: ALBERTS
Publisher: NORTON
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Chapter 4, Problem 10Q

A.

Summary Introduction

To explain: The active site of an enzyme that usually occupies only a small fraction of the enzyme surface.

B.

Summary Introduction

To explain: Catalysis by some enzymes involves the formation of a covalent bond between an amino acid side chain and a substrate molecule.

C.

Summary Introduction

To explain: A β sheet can contain up to five strands, but not more.

D.

Summary Introduction

To explain: The specificity of an antibody molecule is contained exclusively in loops on the surface of the folded light-chain domain.

E.

Summary Introduction

To explain: The possible linear arrangements of amino acids are so vast that new proteins almost never evolve by alteration of old ones.

F.

Summary Introduction

To explain: Allosteric enzymes have two or more binding sites.

G.

Summary Introduction

To explain: Non-covalent bonds are too weak to influence the three-dimensional structure of macromolecules.

H.

Summary Introduction

To explain: Affinity chromatography separates molecules according to their intrinsic charge.

I.

Summary Introduction

To explain: Upon centrifugation of a cell homogenate, smaller organelles experience less friction and thereby sediment faster than larger ones.

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O Macmillan Learning Glu-His-Trp-Ser-Gly-Leu-Arg-Pro-Gly The pKa values for the peptide's side chains, terminal amino groups, and carboxyl groups are provided in the table. Amino acid Amino pKa Carboxyl pKa Side-chain pKa glutamate 9.60 2.34 histidine 9.17 1.82 4.25 6.00 tryptophan 9.39 2.38 serine 9.15 2.21 glycine 9.60 2.34 leucine 9.60 2.36 arginine 9.04 2.17 12.48 proline 10.96 1.99 Calculate the net charge of the molecule at pH 3. net charge at pH 3: Calculate the net charge of the molecule at pH 8. net charge at pH 8: Calculate the net charge of the molecule at pH 11. net charge at pH 11: Estimate the isoelectric point (pl) for this peptide. pl:
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This entire structure (Pinus pollen cone) using lifecycle terminology is called what?
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