Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 3, Problem 10TY
Summary Introduction
Introduction:
Chargaff’s rules said that ratio of purine and pyrimidine bases in DNA is 1:1 which mean amount of cytosine is equal to guanine and amount of thymine equal to adenine.
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A DNA molecule contains 30% G. What percentage of its bases are A?a. 30%b. 20%c. 15%d. 10%e. none of the above
The base content of a particular DNA molecule is 36%
thymine. What is the percentage of each of the following
bases in the molecule?
a. Adenine b. Guanine
c. Cytosine
Which of the following statements about DNA is true?
The two strands are held together by hydrogen bonds.
In deoxyribose, the 2' C has an OH attached to it.
Positive supercoils promote strand separation.
Z DNA forms a right-handed helix.
One strand is positively charged while the other is negatively charged.
Chapter 3 Solutions
Principles of Biology
Ch. 3.1 - Carbon has an atomic number of ___________ and has...Ch. 3.1 - Prob. 2TYKCh. 3.2 - Formation of polymers from monomers typically...Ch. 3.3 - Which of the following classes of organic...Ch. 3.4 - Prob. 1CCCh. 3.4 - Prob. 1BCCh. 3.4 - Glucose, galactose, and fructose are examples of...Ch. 3.4 - _____________ is a storage polysaccharide commonly...Ch. 3.5 - When water and oil are added to a test tube, the...Ch. 3.5 - For a more detailed view of the components of cell...
Ch. 3.5 - Hydrolysis of a triglyceride yields 3 glycerols...Ch. 3.5 - Which of the following are highly amphipathic?...Ch. 3.6 - Which of the following is the primary structure of...Ch. 3.6 - A peptide bond is formed between amino groups of...Ch. 3.7 - If the sequence of bases in one strand of a DNA...Ch. 3.7 - Prob. 1TYKCh. 3.7 - Which of the following is not found in DNA?...Ch. 3 - Which of the following is a common functional...Ch. 3 - Prob. 2TYCh. 3 - Prob. 3TYCh. 3 - Which of the following bonds is/are nonpolar?...Ch. 3 - Prob. 5TYCh. 3 - Prob. 6TYCh. 3 - Prob. 7TYCh. 3 - Prob. 8TYCh. 3 - Prob. 9TYCh. 3 - Prob. 10TYCh. 3 - Imagine that a proteins primary structure could...Ch. 3 - Explain the difference between saturated and...Ch. 3 - Prob. 3CCQCh. 3 - Prob. 1CBQCh. 3 - Prob. 2CBQ
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- Which is not a nucleotide base in DNA? a. adenine c. glutamine e. cytosine b. guanine d. thymine f. All are in DNA.arrow_forwardWhich is not a nucleotide base in DNA? a. adenine b. glutamine c. guanine d. thymine e. cytosine f. all are in DNAarrow_forwardChemical analysis shows that a nucleic acid sample contains A, U, C, and G. Is this DNA or RNA? Why?arrow_forward
- Describe the structure and complementary base pairing of DNA.arrow_forwardAn RNA molecule is typically _________ ; a DNA molecule is typically ______ . a. single-stranded; double-stranded b. double-stranded; single-strandedarrow_forwardEnergy that drives the attachment of a nucleotide to the end of a growing strand of DNA comes from ________. a. the nucleotide b. DNA polymerase c. phosphate-group transfers from ATParrow_forward
- DNA contains many hydrogen bonds. Are hydrogen bonds stronger or weaker than covalent bonds? What are the consequences of this difference in strength?arrow_forwardWhich of the following is NOT true of the structure of DNA? Select one: a. The backbone is made up of alternating sugars and phosphates. b. Nitrogenous bases A and C bond together, and bases T and G bond together. c. It contains all of the genetic information for an individual. d. The molecule has the shape of a coiled ladder.arrow_forwardSegments of DNA act as templates that guide the amino acids to join together to form a. proteins. b. sugars. c. phosphates. d. fours kinds of bases. e. all of the above.arrow_forward
- Which of the following is true of DNA but not RNA? It can polymerize by adding monomers onto either the 5' or the 3' end. It forms intermolecular base pairs, forming stable double-stranded structures. Release of PPi from the monomer provides the energy for polymerization. It has secondary structure.arrow_forwardWhich of the following are nucleotide base pairs found in DNA? Select all that apply. Thymine and guanine Adenine and thymine Guanine and cytosine Cytosine and adeninearrow_forwardEach DNA double helix has a backbone that consists of alternating ___. covalent and ionic bonds nitrogen-containing bases hydrogen bonds sugar and phosphate molecules covalent and hydrogen bondsarrow_forward
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