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Intro to Nucleic Acids-Structure, Central Dogma
Intro to Nucleic Acids-Structure, Central Dogma

... Agents of Mutations 1. Physical Agents a) UV Light b) Ionizing Radiation 2. Chemical Agents Some chemical agents can be classified further into a) Alkylating b) Intercalating c) Deaminating 3. Viral ...
Biochemistry Frameworksheet
Biochemistry Frameworksheet

... Nucleic acids are polymers composed of monomers called nucleotides. Each nucleotide consists of three subunits: a five-carbon pentose sugar, a phosphoric acid group, and one of four nitrogen bases. (For DNA these nitrogen bases are adenine, guanine, cytosine, or thymine.) DNA and RNA differ in a num ...
Lab 11
Lab 11

... These are combined with phosphates (yellow) and the other bases to make RNA. 2. Construct a messenger RNA molecule that could be made from one of the DNA strands you made. The same base pairing rules apply for RNA except uracil (U) pairs with adenine (A). Synthesize a protein 1. Identify the special ...
All You Need to Know About DNA and Protein Synthesis DNA is a
All You Need to Know About DNA and Protein Synthesis DNA is a

... The central dogma of DNA is that DNA codes for mRNA and then mRNA is used to link amino acids together building a protein. The protein product then results in a trait about the organism. You can think about it this way DNA → mRNA → Protein → Trait. To make a trait apparent in an organism, DNA is inv ...
DNA Protein Synthesis Notes
DNA Protein Synthesis Notes

... indicates where a genetic sequence can be read and decoded. It specifies to other molecules where transcription begins. The TATA box is named for its conserved DNA sequence, which is most commonly TATAAA. A ...
Nucleic Acids and DNA Replication
Nucleic Acids and DNA Replication

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DNA & CHROMSOMES
DNA & CHROMSOMES

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Nucleic Acids

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... How is DNA analogous to a ladder? DNA is double stranded and analogous to a ladder. The sides of the ladder are composed of alternating sugars (deoxyribose) and phosphate groups that run antiparallel (opposite direction) to one another. On the left side the first carbon found on the strand is #5 an ...
AP Biology Study Guide
AP Biology Study Guide

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DNA Replication
DNA Replication

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... A key factor in creating genetically modified organisms is understanding the principles associated with how genetic information is transferred. We’ve all heard these terms, but how do they relate to biotechnology? ...
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PHYSgeneticsnotes

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Protein Synthesis Intro Webquest
Protein Synthesis Intro Webquest

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Name: Date: Period: ______ Must
Name: Date: Period: ______ Must

... 20) Suppose a species of bacteria has lost the cell surface proteins that can bind to foreign DNA from related species in the surrounding environment and initiate the uptake of this “naked” DNA into the cell. How will this affect the amount of genetic variation in the bacterial species over time? ...
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Objectives 10 - u.arizona.edu
Objectives 10 - u.arizona.edu

... replication. Multiple origins of replication in eukaryotes are cis-acting factors that create bidirectional replication forks. Trans-acting factors include: Origin binding protein regognizes the origin, denatures the DNA and binds to helicase; Helicase unwinds the DNA double strand; Single-strand DN ...
How Proteins Are Made Newsletter
How Proteins Are Made Newsletter

... Transcription – making the template for a protein There are three main types of RNA: mRNA, rRNA, and tRNA. These RNA molecules have different structures and, therefore, have different jobs in the protein-making process, or protein synthesis. This process of making proteins consists of two major sta ...
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10.6 Are Nucleic Acids Susceptible to Hydrolysis?

... Two fundamental chemical differences distinguish DNA from RNA: 1. DNA contains 2-deoxyribose instead of ribose. 2. DNA contains thymine instead of uracil. What are the consequences of these differences, and do they hold any significance in common? An argument can be made that, because of these diffe ...
Protein Synthesis 1 - Transcription and Translation
Protein Synthesis 1 - Transcription and Translation

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Review Questions
Review Questions

... a single nucleotide. Unlike a DNA or RNA nucleotide, the ATP nucleotide has three phosphate groups attached to its ribose sugar. All living beings run their cells on ATP. The universal battery, ATP is an energy-storing molecule. All the food an organism consumes (carbohydrates, lipids, and proteins) ...
DNA - Menihek Home Page
DNA - Menihek Home Page

... ELONGATION takes place differently on each strand, as shown in the diagram. DNA polymerases (enzymes) add nucleotides to the open DNA in the 5’ to 3’ direction continuously. On the other strand, called the lagging strand, replication is in sections, not continuous. An enzyme called primase starts up ...
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Slide 1

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... Process by which information encoded in ___________ is used to assemble a protein at a ribosome ...
Lecture #7 Date - Helena High School
Lecture #7 Date - Helena High School

... Griffith: bacterial work; transformation: change in genotype and phenotype due to assimilation of external substance (DNA) by a cell Avery: transformation agent was DNA ...
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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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