Chapter 12 short answers 1. Why are bacteriophages so useful in DNA research? Bacteriophages are composed of proteins that encapsulate a DNA or RNA genome, and may have relatively simple or elaborate structures. Their genomes may encode as few as four genes, and as many as hundreds of genes. Phage replicate within bacteria following the injection of their genome into the cytoplasm. 2. Why does DNA display a viscous-no viscous behavior at different temperatures? The secondary bonds of a polymer…
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DNA, otherwise known as deoxyribonucleic acid, is define as “any of various nucleic acids that are usually the molecular basis of heredity, constructed in a double helix held together by hydrogen bonds” (DNAAbout Our Definitions 1). DNA is what makes a plant or a human different. It is what makes it original and what makes it taste, smell, look, and feel different. Without DNA, you are missing much needed information to complete what you are trying to make. In 1869, a physician named Friedrich…
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DNA DISCOVERY Who was Rosalind Franklin, what did she discover and how did she discover it? Rosalind franklin was a Pioneer Molecular Biologist which discovered the discovery of DNA structure helped her co-workers understand how genetic information passes from parents to their offspring. Rosalind also discovered the double helix by a process called x-ray crystallography. X-ray crystallography is a tool used for identifying the atomic and molecular structure of a crystal, in which the crystalline…
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no idea what book I wanted to read. But when I read the title The Double Helix, it looked like an informative book that will help you understand the study of biology. When I first started to read it, I wasn't too sure what I was going to think of it, but as I started to read it I realized that I picked the right book It's serious at times, but also humorous. Instead of being a boring read it makes the reader laugh and have an actual ending to look forward to. This book is about how James…
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responsibility for posting refined answers to the guided readings - succinct, relevant, clear, and with pictures or a video to compliment. When contributing to the reading guide, follow these steps: 1) First complete the reading guide on your own from the DNA unit page. 2) Write your response to a question in word and then copy it. Be sure to upload pictures and/or video for each question. 3) Click on the edit button and then go to the appropriate question and paste your answer below it. Sign your contribution…
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bonds. Hydrogen Bonds form between DNA Bases, Adenine-Thymine Cytosine-Guanine linking the DNA strands together and causing the DNA to coil in order to create its 3D structure (DNA Double Helix). They are important as they allow semi-conservative DNA replication to occur. This is where two identical copies of DNA are produced from an original DNA double Helix. Firstly The enzyme DNA helicase will break the hydrogen bonds formed between the bases to separate the DNA strands, free nucleotides will then…
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A- DNA replication DNA replication is a biological process by which a molecule of DNA is copied. This process starts at the origin of replication where the double helix of the parental DNA is being unwound by the helicase in two separated strands. Then, single-strand biding proteins bind on the unpaired strands keeping them from repairing. The topoisomerase helps relieve the strain by breaking and swiveling the DNA strands ahead of the replication fork. The primase synthesize a short stretch of…
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DNA AND RNA REVIEW Which of these diagrams shows the structure of a nucleotide? A C B D Name two nucleic acids. DNA and RNA Identify the part of the nucleotide labeled A. Identify the part of the nucleotide labeled B. Identify the part of the nucleotide labeled C. A phosphate group B nitrogenous base C deoxyribose or ribose adenine, thymine, Name two nitrogenous bases. guanine, cytosine, or uracil For the following definitions, give the vocabulary word(s): • segment of DNA that…
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If the DNA in a cell contains the information to the entire organism, but uses only that portion of the information that is required for its life's purpose and and we know that only a small percentage of the brain is used by humans would it be possible that each human being also contains all the information of the entire organism of which it is a part. This is a question I've pondered over for at least a day and a half well we do you know that quantum physics tells us that at any point in time…
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regulatory proteins have common DNA binding motifs, which are particular bends in their protein chains that permit them to interlock with the | Major groove of the DNA helix | Regulatory proteins shut off transcription by binding to a site immediately in front of the promoter and often even overlapping the promoter. This site is referred to as the | Operator site | Enhancers are the binding sites for the | Gli proteins | DNA methylation, adding a methyl group to DNA nucleotides, in vertebrates…
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