Biology
Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 5.4, Problem 1CS
Summary Introduction

To determine: The amino acid which is expected to cross an artificial phospholipid bilayer.

Introduction: The phospholipid bilayer is arranged in the form of leaflets arranged such that polar heads are directed towards the outside and the hydrophobic tail is hidden towards the inside. The phospholipid layer provides both fluidity and rigidity to the membrane and is responsible for the selective permeability of the membrane.

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Exercise B: Peptide Bond Formation Figure 2 shows two individual amino acids, and then those same two amino acids after they have been linked together by a peptide bond to form a dipeptide. Addition of more amino acids linked by peptide bonds would form a polypeptide, the precursor to a functional protein. нн +| | || H-N-C-Ĉ-0 H. +! | || H-N-C-ċ –0 H. H H H +| | || H-N-C-C-N-C-C- + H CH2 CH2 H CH2 H. CH2 SH SH NH, NH, Figure 2. Formation of a peptide bond between two amino acids. Answer the below questions in your own document. 1. Which two amino acids are shown on the left side of Figure 2? Use the Figure 3.2 from your text to answer this. 2. To which chemical groups do these amino acids belong? 3. Were you able to identify their chemical characteristics based on your rules? If not, you should go back and revise your rules! On the dipeptide shown in Figure 2, label the peptide bond that was formed when the two individual amino acids were joined. Label the free amino and carboxyl…
Exercise B: Peptide Bond Formation Figure 2 shows two individual amino acids, and then those same two amino acids after they have been linked together by a peptide bond to form a dipeptide. Addition of more amino acids linked by peptide bonds would form a polypeptide, the precursor to a functional protein. H H H. H H +| | H-N-Ċ- ċ-0 H-N-Ć- Ĉ-O H-N-Č -C. N-C-C- H CH2 H. CH2 H. CH2 H CH2 SH SH NH2 NH2 Figure 2. Formation of a peptide bond between two amino acids. Answer the below questions in your own document. F1. Which two amino acids are shown on the left side of Figure 2? Use the Figure They 3.2 from your text to answer this. 2. To which chemical groups do these amino acids belong? 3. Were you able to identify their chemical characteristics based on your rules? If not, you should go back and revise your rules! On the dipeptide shown in Figure 2, label the peptide bond that was formed when the two individual amino acids were joined. Label the free amino and carboxyl groups at the ends…
Exercise B: Peptide Bond Formation Figure 3 shows two individual amino acids, and then those same two amino acids after they have been linked together by a peptide bond to form a dipeptide. Addition of more amino acids linked by peptide bonds would form a polypeptide, the precursor to a functional protein. нн H H O нно H O +| | || H-N-C-ċ-o + +| 1 || H-N-C-C +| | || Н-N—С- С—N—C—С H CH2 H CH2 H CH2 CH2 SH SH NH2 NH2 Figure 3. Formation of a peptide bond between two amino acids. Answer the below questions in your own document. • Which two amino acids are shown on the left side of Figure 3? Use Figure 2 to answer this. • To which chemical groups do these amino acids belong? Were you able to identify their chemical characteristics based on your rules? If not, you should go back and revise your rules! On the dipeptide shown in Figure 3, label the peptide bond that was formed when the two individual amino acids were joined. Label the free amino and carboxyl groups at the ends of this…
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