Which of the following factors can result in...

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Chapter 3.PDF

5 )   Which of the following factors can result in the denaturation of a protein ?
A ) heat
B ) changes in salt concentration
C ) changes in p H
D ) chemicals that destroy hydrogen bonds
1 )   Nucleotides
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6 )   A specific stretch of DNA that contains information for the amino acid sequence of a polypeptide is a ( n ) _ _______.
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2 )   A phospholipid is composed of
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7 )   Organic compounds
A ) always contain nitrogen .
B ) can only be synthesized in a laboratory .
C ) are synthesized by only animal cells .
D ) one fatty acid molecule linked to one glycerol molecule and two phosphate groups .
E ) one glycerol molecule linked to one phosphate group and two fatty acids .
D ) always contain oxygen .
E ) always contain carbon atom attached to a hydrogen atom .
3 )   The results of dehydration synthesis can be reversed by
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8 )   Which one of the following is an example of secondary structure in a protein ?
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4 )   Sucrose is formed 9 ) DNA differs from RNA because DNA
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9 )   DNA differs from RNA because DNA
A ) contains the sugar ribose rather than the sugar deoxyribose .
B ) contains thymine in place of uracil .
C ) consists of a single rather than a double polynucleotide strand .
D ) contains phosphate groups not found in RNA .
E ) All of the choices are correct .
Answer:  E )   All of the choices are correct .
10 )   If one strand of a DNA double helix has the sequence GACGTCA , what will be the sequence of the other strand ? 15 ) Which list below consists of only polymers ?
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15 )   Which list below consists of only polymers ?
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11 )   Which one of the following lists contains only polysaccharides ? 16 ) The ability to tolerate lactose throughout life most likely arose in ___ _____.
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16 )   The ability to tolerate lactose throughout life most likely arose in ________ .
A ) Native Americans
B ) populations that live in wet climates
C ) cultures that keep dairy herds
D ) populations that live in cold climates
E ) All of the choices are correct .
12 )   The tertiary structure of a polypeptide refers to
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17 )   Which one of the following contains a carboxyl and an amino group ?
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13 )   If you were to add olive oil to your food as part of a diet to lower your risk of atherosclerotic disease , you would use olive oil that
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18 )   One way to convert an oil into a substance that is solid at room temperature is to
A ) remove water , causing a dehydration synthesis reaction to occur .
B ) was liquid at room temperature .
C ) was modified to be solid at room temperature .
B ) remove hydrogens , increasing the number of double bonds .
D ) had lard added to it .
E ) None of the choices are correct .
C ) put it in the refrigerator : when unsaturated fats cool , double bonds form and the fats solidify .
14 )   A fat that is completed hydrogenated would be D ) add hydrogens , decreasing the number of double bonds in the molecules . _ _______.
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19 )   Hydrocarbons
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Chapter 22 / Exercise 115
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Homework # 3 (30 points) Chapter 3 The Molecules of Life MULTIPLE CHOICES (0.5 points each). Select the one alternative that best completes the statement or answers the question then, fill the corresponding box - square on your SCANTRON FORM N0. 886 - E MINI ESSAY BOOK. 1)Nucleotides A) contain sugar molecules. B) contain phosphate groups. C) can be linked together to form nucleic acids. D) contain nitrogenous bases. All of the choices can result in the denaturation of a protein. 2)A phospholipid is composed of D) one fatty acid molecule linked to one glycerol molecule and two phosphate groups. E) one glycerol molecule linked to one phosphate group and two fatty acids. 3) The results of dehydration synthesis can be reversed by A) the addition of a phosphate group. B) hydrolysis. C) the addition of an amino group. D) condensation. E) polymerization. 4)Sucrose is formed 5) Which of the following factors can result in the denaturation of a protein? E) All of the choices can result in the denaturation of a protein. 6) A specific stretch of DNA that contains information for the amino acid sequence of a polypeptide is a(n) ________.
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Chapter 22 / Exercise 115
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