A sound wave with intensity 2.0 x 10^-3 W/m² is perceived to be modestly loud. Your eardrum is 6.0 mm in diameter. How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?

검증된 단계별 안내

Understand Chargaff's rule: Chargaff's rule states that in a DNA molecule, the amount of adenine (A) is equal to the amount of thymine (T), and the amount of cytosine (C) is equal to the amount of guanine (G). This is due to the base-pairing nature of DNA, where A pairs with T and C pairs with G.

Recognize the implications of Chargaff's rule: The rule implies that the ratio of purines (adenine and guanine) to pyrimidines (cytosine and thymine) is consistent, and the total number of base pairs in a DNA molecule is always balanced.

Apply Chargaff's rule to analyze DNA composition: If you are given the percentage of one nucleotide, you can use the rule to determine the percentages of the other nucleotides. For example, if adenine makes up 30% of the DNA, thymine will also make up 30%, and cytosine and guanine will each make up 20%.

Evaluate the statements provided in the problem: Identify which statement aligns with the idea of complementary base pairing and the equal proportions of A-T and C-G as described by Chargaff's rule.

Select the statement that best reflects Chargaff's rule: The correct statement will likely involve the relationship between the quantities of adenine, thymine, cytosine, and guanine in a DNA molecule.

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주요 개념

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Chargaff's Rule

Chargaff's Rule states that in a double-stranded DNA molecule, the amount of adenine (A) is equal to thymine (T), and the amount of cytosine (C) is equal to guanine (G). This principle is fundamental in understanding the base pairing in DNA, where A pairs with T and C pairs with G, ensuring the stability and integrity of the genetic code.

Base Pairing

Base pairing refers to the specific hydrogen bonding between nitrogenous bases in DNA. The complementary nature of base pairing, where A pairs with T and C pairs with G, is crucial for DNA replication and transcription, as it allows for accurate copying of genetic information during cell division.

DNA Structure

The structure of DNA is a double helix formed by two strands of nucleotides running in opposite directions. Each nucleotide consists of a sugar, a phosphate group, and a nitrogenous base. Understanding this structure is essential for grasping how Chargaff's Rule applies to the overall stability and function of DNA in biological systems.