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Ch. 3 Cells: The Living Units
Marieb - Human Anatomy & Physiology 11th Edition
Marieb, Hoehn11th EditionHuman Anatomy & PhysiologyISBN: 9780136874034당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Marieb, Hoehn 11th EditionCh. 3 Cells: The Living Units문제 13
3장, 문제 13

If DNA has a sequence of AAA, then a segment of mRNA synthesized on it will have a sequence of:
a. TTT
b. UUU
c. GGG
d. CCC

검증된 단계별 안내
1
Understand that during transcription, mRNA is synthesized using the DNA template strand by complementary base pairing, where adenine (A) in DNA pairs with uracil (U) in RNA, thymine (T) pairs with adenine (A), cytosine (C) pairs with guanine (G), and guanine (G) pairs with cytosine (C).
Identify the given DNA sequence: AAA. This means the DNA template strand has three adenine bases in a row.
Apply the base pairing rules to find the complementary mRNA sequence: each adenine (A) in DNA pairs with uracil (U) in mRNA.
Write the mRNA sequence by replacing each A in the DNA with U in the mRNA, resulting in UUU.
Compare the mRNA sequence to the answer choices and select the one that matches the sequence UUU.

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주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

DNA to mRNA Transcription

Transcription is the process where an mRNA strand is synthesized from a DNA template. During this process, RNA polymerase reads the DNA sequence and creates a complementary RNA strand, replacing thymine (T) with uracil (U) in RNA.
추천 영상:
가이드 코스
04:01
1) Elongation of Transcription

Base Pairing Rules in Transcription

In transcription, adenine (A) in DNA pairs with uracil (U) in mRNA, thymine (T) pairs with adenine (A), cytosine (C) pairs with guanine (G), and guanine (G) pairs with cytosine (C). This ensures the mRNA sequence is complementary to the DNA template.
추천 영상:
가이드 코스
07:44
Overview of Transcription

Role of Uracil in RNA

RNA contains uracil (U) instead of thymine (T), which is found in DNA. This difference is crucial because during transcription, uracil pairs with adenine, allowing mRNA to carry the genetic code from DNA to the ribosome for protein synthesis.
추천 영상:
가이드 코스
04:19
1) RNA Processing
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