structure-and-properties-of-peptides biochemistry question and answers -Page 4

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Structure and Properties of Peptides problems

1. The major element of secondary structure in myoglobin and hemoglobin is
Options
A. the P-strand
B. the a-helix
C. the reverse turn
D. All of these

Correct Answer: the a-helix

2. The heme is held in place by a bond between
Options
A. the Fe²⁺ and cysteine
B. the Fe³⁺ and histidine
C. the Fe³⁺ and cysteine
D. the Fe²⁺ and histidine

Correct Answer: the Fe²⁺ and histidine

3. Which of the three subunits of the G proteins binds GDP and GTP?
Options
A. Alpha
B. Beta
C. Gamma
D. Delta

Correct Answer: Alpha

First 2 3 4

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Allosteric Effects Amino Acid Metabolism Anti Bodies Antigen ATP Synthesis and Fatty Acid Oxidation Carbohydrate Cell Signalling and Transduction Cell Structure and Compartments Chromatography Disease Associated with Immune System DNA Structure and Replication Enzymes FT IR Spectroscopy Gas Chromatography Gel Electrophoresis Genetic Code and Regulation Genetic Regulation Prokaryotes Glycolysis HPLC Immune Response Immune System Immunological Techniques Lipid Membrane Structure and Functions Minerals Nitrogen Metabolism NMR Spectroscopy Nucleic Acids Oxidative Phosphorylation Photosynthesis and Respiration Polymerase Chain Reaction Protein and Nucleic Acid Interactions Protein Purification Protein Stability Protein Structure Protein Synthesis Recombinant DNA Technology RNA Structure Spectroscopy Structure and Properties of Amino Acids Structure and Properties of Peptides TCA Cycle Thermodynamics and Free Energy Transcription and Regulation UV Luminance Spectroscopy Vitamins and Coenzymes Water, pH and Macromolecules

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