What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 3, Problem 10MC
Summary Introduction
Introduction:
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Which of the following are pyrimidines?
Select one:
A.
adenine and thymine
B.
cytosine and thymine
C.
adenine and guanine
D.
adenine and cytosine
E.
guanine and thymine
Identify the base and sugar in each of the following nucleotides:
A. CMP
B. dAMP
C. dTMP
D. UMP
Considering the principle of complementary base pairing, you would expect an equal ratio of which two nitrogenous bases in a DNA molecule?
a.
guanine and thymine
b.
uracil and adenine
c.
thymine and cytosine
d.
cytosine and guanine
e.
adenine and guanine
Chapter 3 Solutions
What Is Life? A Guide to Biology with Physiology
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- Which of the following is the correct way that heterocyclic bases are paired between two polypeptide chains of DNA? a. Pyrimidines-Pyrimidines b. Purine-Pyrimidine c. Purines-Purine d. Sugar-Phosphatearrow_forwardWhich of the following is the monomeric unit of DNA. A. Nucleotides B. Deoxyribose C. Nitrogenous bases D. Phospatearrow_forwardWhich of the following are nucleotide base pairs found in DNA? Select all that apply. A. Adenine and thymine B. Cytosine and adenine C. Thymine and guanine D. Guanine and cytosinearrow_forward
- An analysis of the bases in DNA present in body cells gave the following results: W units/g X units/g Y units/g Z units/g 31 45 45 31 The correct identification of each base would be: W Y Z A. adenine guanine B. cytosine adenine C. guanine D. thymine Select one: a. C b. D c. B d. A X thymine guanine thymine cytosine cytosine guanine cytosine thymine adenine adeninearrow_forwardWhich of the following statements about DNA is true? (Select all that applied) Select one: a. DNA contains thymine but not uracil. b. DNA molecules contain deoxyribose. c. All of these d. In a double-stranded DNA molecule, adenine on one strand will be connected to thymine on the complementary strand by two hydrogen bonds.arrow_forwardWhich of the following are nitrogenous bases with the general structure shown in the picture? a.cytosine b.uracil c.thymine d.adenine e.guaninearrow_forward
- According to Chargaff’s rules for DNA base composition, if a DNA sample contained 10% guanine, the sample should have: A. 40% cytosine B. 90% cytosine C. 10% adenine D. 40% thyminearrow_forwardA nucleotide is composed of all of the following excepta. 5-carbon sugar. c. 6-carbon sugar.b. nitrogen base. d. phosphate grouparrow_forwardDraw the two dipeptides formed from each pair of amino acids. a. tyrosine and lysine b. threonine and glutamine c. alanine and histidinearrow_forward
- In Watson and Crick's model of DNA structure, the two strands of the DNA double helix are joined through a. Ionic bonds b. Hydrophobic interactions c. Covalent bonds d. Disulfide bonds e. Hydrogen bondsarrow_forwardAnswer the following using the structure: a. Is this a purine or pyrimidine? b. Is this a deoxyribonucleotide or a ribonucleotide? c. Indicate the component that changes this from a nucleoside to a nucleotide.arrow_forwardWhich of the following are nitrogenous bases with the general structure? a.guanine b.uracil c.adenine d.thymine e.cytosinearrow_forward
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