injects its DNA into the bacterium‚ the phage DNA directs the host cell to make more phage DNA‚ The cell lyses and releases the new phages DNA structure (10.2) DNA structure is double helix DNA vs. RNA (10.2) DNA is deoxyribose while RNA is sugar ribose and RNA has the base Uracil instead of Thymine 4 nitrogenous bases & base pairing (10.2) A pairs with T‚ forming two hydrogen bonds‚ and G pairs with C‚ forming three hydrogen bonds. Watson‚ Crick‚ Franklin‚ Wilkins – DNA helix
Free DNA RNA Gene expression
Experiment: DNA damage and mutations in human cells when exposed to nitric oxide Aim: To examine mutations after in vitro exposure of nitric oxide to human cells. Abstract: Nitric oxide (NO) is a anatomical carrier formed by various cell types. In this experiment nitric oxide is made to react with undamaged human cells and solutions of DNA‚ RNA ‚ guanine or adenine in aerobic conditions. TK6 human lymphoblastoid cells were altered. It has been observed that deamination of purines‚ pyrimidines
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Objectives • To extract DNA and observe its characteristics Time Allocation: 1 hour‚ with overnight incubation/cooling the night before Note: Place the 91% isopropyl alcohol in the freezer the night before beginning the exercise. Note: If the mortar and pestle method is chosen‚ soak the split peas in distilled water the night before beginning the exercise. Materials |Materials |Label or Box/Bag |Qty |Item Description
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Chapter 12A—DNA and RNA MULTIPLE CHOICE 1. What did Griffith observe when he injected into mice a mixture of heat-killed disease-causing bacteria and live harmless bacteria? a. The disease-causing bacteria changed into harmless bacteria. b. The mice developed pneumonia. c. The harmless bacteria died. d. The mice were unaffected. ANS: B PTS: 1 REF: p. 288 2. Which of the following is a nucleotide found in DNA? a. ribose + phosphate group + thymine b. ribose + phosphate
Free DNA RNA Gene
_______________________ Please see me if you have any questions 1. Which of the following is NOT a common consequence of mutations that eliminate cell-cycle checkpoints? A. polyploidy B. increased chromosomal translocations C. increased DNA damage D. aneuploidy E. Increased apoptosis 2. Attenuation is fine tuning of gene regulation of operons for enzymes associated with anabolic (chemical building) pathways‚ such as the Trp operon for tryptophan synthesis. Which of the following
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genome is a circular molecule ‚ have little non-coding DNA‚ and have their genes tightly packed with few intergenic regions between genes. Furthermore‚ mitochondria are organelles that contain a separate set of DNA from the rest of the cell and the body. Mitochondrion DNA contains 16‚569 nucleotides and contains 37 genes. These genes are all involved in the production of energy and storage of ATP. The point of this lab is to understand how DNA can mutate over
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Hiroshima and Nagasaki in August of 1945. Nuclear bombs release radioactive gamma rays that severely disrupt DNA. The author‚ in this chapter‚ takes us through a journey via Tsutomu Yamaguchi‚ and presents his experiences with the nuclear bombs in Japan. He also gives the reader a breakdown of DNA from a scientific perspective. He explained the harm of radioactivity on DNA‚ “Fracturing DNA disrupts genes‚ disrupting genes halts protein production; halting protein production kills cells” (Kean‚ 2012)
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genetic information‚ DNA. Cell grows‚ splits in half‚ cell grows‚ splits in half and so on…. A special type of division produces nonidentical daughter cells (gametes‚ or sperm and egg cells‚ or spores). CELLULAR ORGANIZATION OF THE GENETIC MATERIAL All the DNA in a cell constitutes the cell’s genome. A genome can consist of a single DNA molecule (common in prokaryotic cells) or a number of DNA molecules (common in eukaryotic cells) DNA molecules in a eukaryotic
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Termination of transcription is an extremely controlled process. As termination progresses‚ the production of phosphodiester bonds ceases‚ the DNA/RNA hybrid helices are unwound‚ DNA recombines to form a double helix once again‚ and DNA is freed from RNA polymerase. RNA synthesis will continue along the DNA template until the polymerase encounters a signal that tells it to stop. In prokaryotes‚ this signal can take one of two forms: ρ – dependent and ρ- independent. ρ – Independent termination
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Material DNA Worksheet Answer the following in at least 100 words: 1. Describe the structure of DNA. A DNA molecule which is the abbreviation for deoxyribonucleic acid is made up of precise lengthy chains of polymers and monomers and they are called nucleotides. These two (2) chains specifically which are composed of DNA strain are then molded by the grouping of the nucleotides into the polynucleotides. The nucleotide is composed of a nitrogenous base‚ a phosphate and a group. In DNA there
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