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Unit 2
Unit 2

... Why did this other type of molecule seem a likely candidate? 5. The following table is a sample of the data Erwin Chargaff published in 1952. Which of the following observations can be supported by the data in the table? a. All organisms contain about the same amounts of adenine and thymine in their ...
DNA Questions – mahon – (26)
DNA Questions – mahon – (26)

... Although DNA is made up of only four different bases, it can encode the information necessary to specify the workings of an entire organism because DNA 1. molecules are found in the nucleus. 2. is directly translated into proteins, which are made up of 20 different amino acids. ...
Unit 6 Cellular Reproduction Chp 12 DNA Notes
Unit 6 Cellular Reproduction Chp 12 DNA Notes

... It takes E. coli less than an hour to copy each of the 5 million base pairs in its single chromosome and divide to form two identical daughter cells. ...
a Database of Nucleic Acids–Protein Interactions
a Database of Nucleic Acids–Protein Interactions

... description, and its location (chain, residue numbers), for each domain presented in the given PDB entry. The table of SCOP domains includes the domain hierarchy, its short description, and its location (chain, residue numbers), for each domain presented in the given PDB entry. The page of CluD serv ...
WELCOME TO BIOLOGY 2002
WELCOME TO BIOLOGY 2002

... Xeroderma Pigmentosum is a rare human autosomal recessive disease.2 The first symptoms usually occur between one and two years of age. Children will have a history of severe burns on small amounts of sunlight exposure. Others have numerous freckle-like spots on sun-exposed body parts. Later symptoms ...
Yfiler Plus PCR Amplification Kit – PCR Setup – Extracted DNA
Yfiler Plus PCR Amplification Kit – PCR Setup – Extracted DNA

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Chapter 9 - HCC Learning Web
Chapter 9 - HCC Learning Web

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Chapter 12 Rev
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DNA Replication
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Ch 16 MolecularBasisofInheritance - APBIO-CON
Ch 16 MolecularBasisofInheritance - APBIO-CON

... It takes E. coli less than an hour to copy each of the 5 million base pairs in its single chromosome and divide to form two identical daughter cells. ...
DNA`s secret code
DNA`s secret code

... After this activity, you should understand how specific proteins are built using DNA. Every protein in your body from your hair to the muscles blinking your eyes was built using DNA’s instructions. The same four bases are able to provide all the information needed to build protein by the order that ...
Nucleic Acids - UCR Chemistry - University of California, Riverside
Nucleic Acids - UCR Chemistry - University of California, Riverside

... Forces that Influence Nucleic Acid Structures (23.1E) The same forces that determine protein structure (Chapter 22) influence nucleic acid structures. They include hydrogen bonding, hydrophobic bonding, and ionic interactions. Hydrogen Bonding. The order of bases on each strand of DNA must be comple ...
On Base Flipping Minireview
On Base Flipping Minireview

... Recent crystallographic evidence suggests that other enzymes may also flip bases out of DNA. In this minireview I propose that base flipping was an early discovery during evolution, while DNA was still being tested as the genetic material, and that this will be reflected by the more widespread occur ...
DNA extraction from cheek cells protocol I mailed to you
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... You can see that the phosphate from one nucleotide is bonded to the sugar in the next nucleotide to form the backbone of each strand in the DNA molecule. The bases of the nucleotides in each strand of DNA extend toward each other in the center of the DNA double helix molecule. A crucial aspect of DN ...
CHAPTER 27: DNA STRUCTURE, REPLICATION, REPAIR
CHAPTER 27: DNA STRUCTURE, REPLICATION, REPAIR

... ‰ In E. coli, 4x10 bases x 2 DNA strands ~ 10 bases per replication ‰ This is 1 mistake in 10 cells ...
DNA is Composed of Complementary Strands
DNA is Composed of Complementary Strands

... 1. Genetic information is stored in DNA. 2. DNA is a double stranded biopolymer containing repeating units of nitrogen base, deoxyribose sugar, and phosphate. 3. DNA can be arranged in 3 types of duplexes which contain major and minor grooves. 4. DNA can adopt several topological forms. 5. There are ...
DNA Nanotweezers Studied with a Coarse
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... captures the dependence on loop (Fig. 2) and stem length. In addition to thermodynamics, the model reproduces many of the physical properties of DNA essential for nanotechnology. Model duplexes have a pitch of 10.4 base pairs per turn, a persistence length of 154 base pairs, and an RMSD of 3.7 in t ...
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Slide 1 - SCF Faculty Site Homepage
Slide 1 - SCF Faculty Site Homepage

... To run the animations you must be in Slideshow View. Use the buttons on the animation to play, pause, and turn audio/text on or off. Please note: once you have used any of the animation functions (such as Play or Pause), you must first click in the white background before you advance the next slide. ...
Important Molecules of Living Systems
Important Molecules of Living Systems

... protein molecule. It is determined by the side chain (R group) interactions that form hydrogen bonds, ionic bonds, covalent bonds, hydrophobic interactions. This level determines the proteins primary function. It is similar to the irritating secondary winding of the phone cord that occurs with use. ...
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No Slide Title

... • Proteins and Traits Proteins act as chemical triggers for many of the processes within cells. Proteins help determine traits. • Help from RNA Another type of molecule that helps make proteins is called RNA, or ribonucleic acid. RNA is so similar to DNA that RNA can serve as a temporary copy of a D ...
Synthesis and properties of modified oligonucleotides
Synthesis and properties of modified oligonucleotides

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GENETICS – BIO 300
GENETICS – BIO 300

... Watson & Crick DNA model: anti-parallel double helix = nucleotides linked by phosphodiester bonds; helices are held together by hydrogen bonds between pairs of nitrogenous bases DNA structure ensures fidelity of replication; base pairing specified by hydrogen bonding DNA replication is semiconser ...
CHAPTER 12 LECTURE SLIDES Prepared by Brenda Leady
CHAPTER 12 LECTURE SLIDES Prepared by Brenda Leady

... To run the animations you must be in Slideshow View. Use the buttons on the animation to play, pause, and turn audio/text on or off. Please note: once you have used any of the animation functions (such as Play or Pause), you must first click in the white background before you advance the next slide. ...
LECTURE 10.1 DNA
LECTURE 10.1 DNA

... d) draw a valid conclusion from that experiment A species scientific name includes information from a) division and genus b) genus and order c) species and phylum d) genus and ...
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Helicase



Helicases are a class of enzymes vital to all living organisms. Their main function is to unpackage an organism's genes. They are motor proteins that move directionally along a nucleic acid phosphodiester backbone, separating two annealed nucleic acid strands (i.e., DNA, RNA, or RNA-DNA hybrid) using energy derived from ATP hydrolysis. There are many helicases resulting from the great variety of processes in which strand separation must be catalyzed. Approximately 1% of eukaryotic genes code for helicases. The human genome codes for 95 non-redundant helicases: 64 RNA helicases and 31 DNA helicases. Many cellular processes, such as DNA replication, transcription, translation, recombination, DNA repair, and ribosome biogenesis involve the separation of nucleic acid strands that necessitates the use of helicases.
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