Pearson eText Bauman Microbiology with Diseases by Body Systems -- Instant Access (Pearson+)
5th Edition
ISBN: 9780135891018
Author: ROBERT BAUMAN
Publisher: PEARSON+
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Chapter 2, Problem 5CT
Summary Introduction
To answer:
The amino acids synthesized in a test tube, D and L forms, occur in equal amounts. The cells use only L forms in their proteins. The meteorites are found to contain amino acids, occasionally. Based on these facts, how can the NASA scientists determine whether the amino acids recovered from space are evidence of Earth-like extraterrestrial life rather than the result of non-
Introduction:
Amino acids exist in nature in L and D forms, but the L-amino acids are predominately found in all cells. The bacterial cell wall only produces D-amino acids.
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Chapter 2 Solutions
Pearson eText Bauman Microbiology with Diseases by Body Systems -- Instant Access (Pearson+)
Ch. 2 - Electrons zip around the nucleus at about 5...Ch. 2 - Chlorine and potassium atoms form ionic bonds,...Ch. 2 - Why are decomposition reactions exothermic, that...Ch. 2 - Why does the neutralization of an acid by a base...Ch. 2 - Raw Oysters and Antacids: A Deadly Mix? The highly...Ch. 2 - Why do the cell membranes of microbes living in...Ch. 2 - Prob. 1MCCh. 2 - The atomic mass of an atom most closely...Ch. 2 - One isotope of iodine differs from another in...Ch. 2 - Prob. 4MC
Ch. 2 - Which of the following terms most correctly...Ch. 2 - In water, cations and anions of salts dissociate...Ch. 2 - Prob. 7MCCh. 2 - Which of the following statements about a...Ch. 2 - Proteins are polymers of ___________. a. amino...Ch. 2 - Which of the following are hydrophobic organic...Ch. 2 - Fill in the Blanks 1. The outermost electron shell...Ch. 2 - Fill in the Blanks 2. The type of chemical bond...Ch. 2 - Prob. 3FIBCh. 2 - Prob. 4FIBCh. 2 - Fill in the Blanks 5. Groups of atoms such as NH2...Ch. 2 - Fill in the Blanks 6. The reverse of dehydration...Ch. 2 - Fill in the Blanks 7. Reactions that release...Ch. 2 - Fill in the Blanks 8. All chemical reactions begin...Ch. 2 - Fill in the Blanks 9. The ____________ scale is a...Ch. 2 - Prob. 10FIBCh. 2 - Label a portion of the molecule below; label two...Ch. 2 - Shown is the amino acid tryptophan. Put the letter...Ch. 2 - List three main types of chemical bonds, and give...Ch. 2 - Name five properties of water that are vital to...Ch. 2 - Prob. 3SACh. 2 - What is the difference between atomic oxygen and...Ch. 2 - Explain how the polarity of water molecules makes...Ch. 2 - Prob. 1CTCh. 2 - Prob. 2CTCh. 2 - Two freshmen disagree about an aspect of...Ch. 2 - When an egg white is heated, it changes from...Ch. 2 - Prob. 5CTCh. 2 - The poison glands of many bees and wasps contain...Ch. 2 - Prob. 7CTCh. 2 - Prob. 8CTCh. 2 - The deadly poison hydrogen cyanide has the...Ch. 2 - Triple covalent bonds are stronger and more...Ch. 2 - How can hydrogen bonding between water molecules...Ch. 2 - How can a single molecule of magnesium hydroxide...Ch. 2 - Prob. 13CTCh. 2 - Prob. 14CTCh. 2 - A textbook states that only five nucleotide bases...Ch. 2 - Using the following terms, fill in the following...
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- Several substances found in nature or within living organisms themselves are essential to the life. Thus, for each of the following substances, please give a concrete example briefly describing how their properties make them essential to life. A) Acid (pH below 7) B) Lipidarrow_forwardThe carbon-nitrogen peptide bond is rigid, but rotation can take place about the N-Ca and the Ca-C bonds in a protein (Ca is the a carbon atom). These bond angles define the conformation of the peptide chain. Consider the Ramachandran plot to answer both questions. Which dihedral angles and residues would not likely occur in a ß sheet? 180 120 60 -60 -120 -180 -180 180 + (degrees) OA. 0=-51°; U=+153°; many Gly and Pro residues D=+60°; u=+60°; many Gly residues В. OC. D=-57°; W=-49°; many Ala residues D=-139°; W=+135°; many Val residues OD. D=-120°; U=+120°; many Tyr residues DE. (səəbap)arrow_forwardA mixture of Alanine (pl 6.02), Glutamic Acid (pl 3.22), Glycine (pl 5.79), Lysine (pl 9.74) and Threonine (pl 6.53) are separated by cation exchange chromatography. What is the order of elution of these amino acids if you use gradient buffer system from pH 10 to pH 2 ? v First 1. Alanine v Second 2. Glutamic Acid v Third 3. Glycine v Fourth 4. Lysine v Fifth 5. Threonine 6. No separationarrow_forward
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