BIOCHEMISTRY (LOOSELEAF)-W/ACCESS
BIOCHEMISTRY (LOOSELEAF)-W/ACCESS
9th Edition
ISBN: 9781319425784
Author: BERG
Publisher: Macmillan Higher Education
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Chapter 4, Problem 6P
Interpretation Introduction

(a)

Interpretation:

The composition of [T] and [C] for a double-helical strand of DNA molecules if [A]=0.030 and [G]=0.24 should be determined.

Concept introduction:

According to base pair rule, (A) is always equal to (T) and (G) is always equal to (C) for a double strand helix of DNA that is

Adenine (A) =Thymine (T) and

Guanine (G) = Cytosine (C)

Interpretation Introduction

(b)

Interpretation:

The composition for [A], [T], [G], and [C] of complementary strand should be determined.

Concept introduction:

According to the rule, there are four nucleotides in DNA; they are Adenine (A), Cytosine (C), Guanine (G), and Thymine (G).

Base pair in DNA are A=T and G=T.

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DNA Stability/Chapter 4 A solution of DNA contains two different DNA molecules. Molecule 1 is 500 base pairs and contains 100 A’s. Molecule 2 is 500 base pairs and contains 300 A’s. (1) How many AT base pairs and GC base pairs is in each DNA molecule? (2) How many, G’s, A’s, T’s and C’s are in each molecule? (3) Draw one figure that shows the relative melting temperature of the two DNA molecules.
29.) equalities now called Chargaff's rule. Biochemist Erwin Chargaff was the first to note that, in DNA, [A]=[T] and [G]=[C], A) Using this rule, determine the percentages of all the bases in DNA that is 20% thymine. [A] = [C] = [G] [T] = 20% %3D - B) If a single strand of RNA is 20% uracil, what can you predict about the percentages of the remaining bases and why?
2, Please answer the following questions pertaining to nucleotides. A. (You can answer part (A) and part (C) together if it is more convenient to do so). DRAW_condensed structural (or line-angle) formulas for the four nucleotides of DNA (A, C, G, T), and identify each with their actual names (not just A, C, G, or T B. What is the definition of a HETEROCYLIC compound? Which of these four nucleotides are heterocyclic, and which are not? C. In forming base pairs, A always pairs with T, and C always pairs with G, because these pairings exhibit optimal hydrogen bonding. Please DRAW each base pair with chemical structures (A with T, C with G), showing the precise hydrogen bonding in each with dotted lines.
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