Each nucleotide pair of a DNA double helix weighs about 1 × 10–21 g. The human body contains approximately 0.5 g of DNA. How many nucleotide pairs of DNA are in the human body? If you assume that all the DNA in human cells is in the B-DNA form, how far would the DNA of a cell reach if stretched end to end?

Each nucleotide pair of a DNA double helix weighs about 1 × 10–21 g. The human body contains approximately 0.5 g of DNA. How many nucleotide pairs of DNA are in the human body? If you assume that all the DNA in human cells is in the B-DNA form, how far would the DNA of a cell reach if stretched end to end?

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter12: Dna: The Carrier Of Genetic Information

Section: Chapter Questions

Problem 4TYU: The two complementary strands of the DNA double helix are held to each other by (a) ionic bonds...

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The statement DNA replicates by a semiconservative mechanism means that (a) only one DNA strand is copied (b) first one DNA strand is copied and then the other strand is copied (c) the two strands of a double helix have identical base sequences (d) some portions of a single DNA strand are old and other portions are newly synthesized (e) each double helix consists of one old and one newly synthesized strand
Each DNA strand has a backbone that consists of alternating (a) purines and pyrimidines (b) nucleotide bases (c) hydrogen bonds and phosphodiester linkages (d) deoxyribose and phosphate (e) phosphate and phosphodiester linkages
The two complementary strands of the DNA double helix are held to each other by (a) ionic bonds between deoxyribose molecules (b) ionic bonds between phosphate groups (c) covalent bonds between nucleotide bases (d) covalent bonds between deoxyribose molecules (e) hydrogen bonds between nucleotide bases
Describe how the two strands of DNA are oriented with respect to each other.
1. discuss the effect of temperature on the viscosity of the liquid 2. DNA solution is viscous because of the nature of chemical substance that can intercalate into the DNA helix. An example of such substance is acridine orange. experiments revealed that acridine orange causes an increase in the viscosity of DNA solution.how would you account for this effect?
(5) What are these short DNA fragments usually called? (6) Which enzyme probably functions here to couple these two newly synthesized fragments of DNA? (7) Is this strand the leading or lagging strand?
2. Discuss the reasons proteins were generally favored over DNA as the genetic material before 1940. What was the role of the tetranucleotide hypothesis in this controversy?
1) How many bases are found (on one of the strands) in a single twist of a DNA helix: a) 3.4 b) 10 d) 0.34 2)Which of the following is a correct representation of a segment of DNA: a) I b) I and III c) IV and V 3)Consider the following sequence: 5' - AUGGCUACAGAUAGCUGGGGCUGAAAAAAAAAAAAAAA..3'Translated, the corresponding protein contains how many amino acids: a) 6 b) 7 c) 8
5. If 18% of the nucleotide bases in a DNA molecule are Guanine (G) A. What % of the bases are cytosine (A)? B. What % of the bases are adenine (A) and thymine (T) combined? C. What % of the bases are thymine alone?
9.)Which of the following does NOT describe the molecular structure of (DNA) Deoxyribonucleic Acid? a.)DNA is made up of single strand, ribose sugar and nitrogen base. b.)DNA is a double helix. c.)DNA is made up of deoxyribose sugar. d.)DNA is made up of nitrogen bases 10.) Which of the following statements best describe the functions of the nervous system. a.)protects the body from injury, infection, and dehydration b.)relays messages from one part of the body to another c.)regulates and controls the body function d.)brings oxygen, food, and chemicals messages to the cells 11.)A molecule which is composed of a phosphate group, deoxyribose sugar and nitrogenous bases: Adenine, Guanine, Thymine and Cytosine a.)mRNA b.)RNA c.)tRNA d.)DNA 12.) What is the correct mRNA strand from this DNA? CAC – GTG – ACA - CGC a.)GTG – CAC – TGT - CGC b.)GUG – GUG – ACA – GCG c.)GUG – CAC – UGU - GCG d.)CAC – GTG – ACA – GCG 13.)Which describe the similarities and differences in the composition…
Each nucleotide pair of a DNA double helix weighs about 1 × 10 −21 g. The human body contains approximately 0.5 g of DNA. How many nucleotide pairs of DNA are in the human body? If you assume that all the DNA in human cells is in the B-DNA form, how far would the DNA reach if stretched end to end?
1. a) What does DNA stand for? b)What is the name of the DNA structure?