교과서 질문
Telomerase synthesizes DNA in the _____ direction.
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Ch. 15 - DNA and the Gene: Synthesis and Repair
Freeman8th EditionBiological ScienceISBN: 9780138276263
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TOC.tableOfContents
- Ch. 1 - Biology: The Study of Life13
- Ch. 2 - Water and Carbon: The Chemical Basis of Life14
- Ch.3 - Protein Structure and Function10
- Ch.4 - Nucleic Acids and the RNA World10
- Ch. 5 - An Introduction to Carbohydrates10
- Ch. 6 - Lipids, Membranes, and the First Cells11
- Ch. 7 - Inside the Cell10
- Ch. 8 - Energy and Enzymes: An Introduction to Metabolism10
- Ch. 9 - Cellular Respiration and Fermentation11
- Ch. 10 - Photosynthesis12
- Ch. 11 - Cell-Cell Interactions12
- Ch. 12 - The Cell Cycle8
- Ch. 13 - Meiosis12
- Ch. 14 - Mendel and the Gene23
- Ch. 15 - DNA and the Gene: Synthesis and Repair15
- Ch. 16 - How Genes Work16
- Ch. 17 - Transcription, RNA Processing, and Translation16
- Ch. 18 - Control of Gene Expression in Bacteria16
- Ch. 19 - Control of Gene Expression in Eukaryotes12
- Ch. 20 - The Molecular Revolution: Biotechnology, Genomics, and New Frontiers15
- Ch. 21 - Genes, Development, and Evolution12
- Ch. 22 - Evolution by Natural Selection16
- Ch. 23 - Evolutionary Processes13
- Ch. 24 - Speciation15
- Ch. 25 - Phylogenies and the History of Life13
- Ch. 26 - Bacteria and Archaea15
- Ch. 27 - Diversification of Eukaryotes16
- Ch. 28 - Green Algae and Land Plants16
- Ch. 29 - Fungi18
- Ch. 30 - An Introduction to Animals9
- Ch. 31 - Protostome Animals15
- Ch. 32 - Deuterostome Animals17
- Ch. 33 - Viruses16
- Ch. 34 - Plant Form and Function16
- Ch. 35 - Water and Sugar Transport in Plants16
- Ch. 36 - Plant Nutrition13
- Ch. 37 - Plant Sensory Systems, Signals, and Responses16
- Ch. 38 - Flowering Plant Reproduction and Development16
- Ch. 39 - Animal Form and Function17
- Ch. 40 - Water and Electrolyte Balance in Animals16
- Ch. 41 - Animal Nutrition16
- Ch. 42 - Gas Exchange and Circulation16
- Ch. 43 - Animal Nervous Systems16
- Ch. 44 - Animal Sensory Systems16
- Ch. 45 - Animal Movement11
- Ch. 46 - Chemical Signals in Animals16
- Ch. 47 - Animal Reproduction and Development16
- Ch. 48 - The Immune System in Animals16
- Ch. 49 - An Introduction to Ecology15
- Ch. 50 - Behavioral Ecology16
- Ch. 51 - Population Ecology16
- Ch. 52 - Community Ecology20
- Ch. 53 - Ecosystems and Global Ecology17
- Ch. 54 - Biodiversity and Conservation Ecology18
15장, 문제 3
How are Okazaki fragments synthesized?
a. By using the leading-strand template, and synthesizing 5'→3'
b. By using the leading-strand template, and synthesizing 3'→5'
c. By using the lagging-strand template, and synthesizing 5'→3'
d. By using the lagging-strand template, and synthesizing 3'→5'.
검증된 단계별 안내1
Understand that DNA replication involves the synthesis of new DNA strands using existing strands as templates. The two strands of DNA are antiparallel, meaning they run in opposite directions.
Recognize that DNA polymerase, the enzyme responsible for synthesizing new DNA, can only add nucleotides in the 5' to 3' direction. This is a key constraint in DNA replication.
Identify that the leading strand is synthesized continuously in the 5' to 3' direction as the replication fork opens. In contrast, the lagging strand is synthesized discontinuously.
Learn that Okazaki fragments are short sequences of DNA nucleotides synthesized discontinuously on the lagging strand. These fragments are later joined together by the enzyme DNA ligase.
Conclude that Okazaki fragments are synthesized using the lagging-strand template in the 5' to 3' direction, which corresponds to option c.
비슷한 문제에 대한 검증된 영상 답변:
이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
1m주요 개념
질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.
DNA Replication
DNA replication is the process by which a cell duplicates its DNA, ensuring that each daughter cell receives an exact copy of the genetic material. It involves unwinding the double helix and synthesizing new strands using the original strands as templates. This process is crucial for cell division and is highly regulated to maintain genetic fidelity.
추천 영상:
03:37
Introduction to DNA Replication
Leading and Lagging Strands
During DNA replication, the two strands of the double helix are replicated differently due to their antiparallel nature. The leading strand is synthesized continuously in the 5' to 3' direction, while the lagging strand is synthesized discontinuously in short segments called Okazaki fragments, also in the 5' to 3' direction, due to the opposite orientation.
추천 영상:
05:15Leading & Lagging DNA Strands
Okazaki Fragments
Okazaki fragments are short sequences of DNA nucleotides synthesized on the lagging strand during DNA replication. These fragments are created because DNA polymerase can only synthesize DNA in the 5' to 3' direction, necessitating a discontinuous approach on the lagging strand. They are later joined by DNA ligase to form a continuous strand.
추천 영상:
05:15Leading & Lagging DNA Strands
관련 실천
교과서 질문
Researchers design experiments so that only one thing is different between the treatments that are being compared. In the Hershey–Chase experiment, what was this single difference?
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교과서 질문
Which of the following is not a property of DNA polymerase?
a. It adds dNTPs only in the 5'→3' direction.
b. It requires a primer to begin synthesis.
c. It opens the two strands of DNA at the replication fork.
d. Its exonuclease activity is involved in proofreading.
1103
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교과서 질문
Analyze the following statements about DNA synthesis. Select True or False for each statement.
T/FAn RNA polymerase is essential for DNA synthesis.
T/FOkazaki fragments would be unnecessary if DNA polymerase could synthesize DNA in both the 3'→5' and 5'→3' directions.
T/FDNA ligase is used more frequently on the lagging strand than on the leading strand.
T/FToposiomerase is required to separate the two strands of DNA at the replication fork.
2276
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교과서 질문
What is the function of primase?
a. Synthesis of the repetitive, short double-stranded DNA sequences required by DNA polymerase.
b. Synthesis of a short RNA strand that is complementary to single-stranded DNA.
c. Closing the gap at the 3′ end of DNA after excision repair.
d. Removing primers and synthesizing a short section of DNA to replace them.
1202
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