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In Class Review for Test 3
In Class Review for Test 3

... Answer: A 3 nucleotide sequence of mRNA that “tells” tRNA what amino acid to bring to the ribosome ...
1. ELONGATION
1. ELONGATION

... specify an amino acid. These are called stop codons or termination codons. They can be regarded as punctuation marks ending the message encoded in the mRNA. Stop codons often are called nonsense codons. The three stop codons are not recognized by a tRNA, but instead by protein factors called release ...
Cells and Enzymes
Cells and Enzymes

... a. State the difference between introns and exons. _________________________________________________________________ _________________________________________________(1) b. Name the enzyme responsible for the primary transcript. ________________________________________________________(1) c. Name the ...
lecture notes
lecture notes

...  DNA : deoxyribonucleic acid. Has a sugar backbone attached to a phosphate residue. Is a double helix structure with two complementary chains. Comprises of four different types of bases, A (adenine), T (thymine), C (cytosine), G (guanine)  RNA : much like DNA but has U (uracil) instead of T, among ...
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PROTEIN SYNTHESIS

... DNA molecule has three components. They are sugar, phosphates and nitrogen bases. Only nitrogen base sequence varies in different DNA molecules. Thus, the sequence of nitrogen bases or nucleotides in a DNA segment is the code or language in which the DNA sends out the message in the form of messenge ...
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... The bonds between amino acid monomers are called ...
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... 21. Fatty acids are monomers of lipids. They are long chains with a carboxyl group at one end and have an absence of oxygen except in the carboxyl group. How many fatty acids did you find? _______________ 22. Fatty acids that contain no double bonds between carbons are saturated. An unsaturated fatt ...
Organic Molecule Cut-Outs
Organic Molecule Cut-Outs

... Organic Molecule Cut-Outs Purpose: To understand monomers, polymers, and how organic molecules are put together. To review the structures and functions of proteins, carbohydrates, lipids, and nucleic acids. Materials: Cut-outs sheets Scissors ...
Nucleic Acids
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... • is a sequence of amino acids in a mRNA that determine the amino acid order for the protein. • consists of sets of three bases (triplet) along the mRNA called codons. • has a different codon for all 20 amino acids needed to build a protein. • contains certain codons that signal the “start” and “end ...
Nucleic Acids - notescentre.com
Nucleic Acids - notescentre.com

... • is a sequence of amino acids in a mRNA that determine the amino acid order for the protein. • consists of sets of three bases (triplet) along the mRNA called codons. • has a different codon for all 20 amino acids needed to build a protein. • contains certain codons that signal the “start” and “end ...
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Organelle speed dating game

... Prokaryotic cells can have tens of thousands of ribosomes. Eukaryotic cells can have hundreds of thousands, if not millions of them, all making proteins. Ribosomes link amino acids together in the order specified by messenger RNA (mRNA) molecules. Ribosomes consist of two major components — a small ...
Chapter 17 - cloudfront.net
Chapter 17 - cloudfront.net

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... A frame is a single series of adjacent nucleotide triplets in DNA or RNA: one frame would have bases at positions 1, 4, 7, etc. as the first base of sequential codons. There are 3 possible reading frames in an mRNA strand and six in a double stranded DNA molecule due to the two strands from which tr ...
Digestion Review Outline
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... Some compounds (food) we eat are too large to diffuse into cells so they need to be digested (broken down). A. Carbohydrates or starches (broken down into building blocks simple sugars, or glucose) B. Proteins (broken down into building blocks amino acids) C. Lipids or fats (broken down into buildin ...
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DNA and Protein Synthesis

... adding a cap and tail consisting of extra nucleotides at the ends of the RNA transcript,-this protects RNA from cell enzymes  removing introns (noncoding regions of the RNA), and  RNA splicing, joining exons (the parts of the gene that are expressed) together to form messenger RNA (mRNA). ...
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... 1318 amino acids (aa) fusion protein, including most of RABEP1 (the first 739 aa) with 3 and one half of the 4 coiled-coil domains, fused to the transmembrane and intracytosolic tyrosine kinase domains of PDGFRb. ...
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Standard Grade Biology – Investigating Cells

... Examples of proteins include: ______________________________________ Sequence of DNA bases The sequence (order) of bases (A, T, C, G) is like a biological book that can be read. This sequence contains the genetic instructions that control an organism’s inherited characteristics, e.g. ...
Topic Definition 3` Refers to the third carbon of the nucleic acid
Topic Definition 3` Refers to the third carbon of the nucleic acid

... A frame is a single series of adjacent nucleotide triplets in DNA or RNA: one frame would have bases at positions 1, 4, 7, etc. as the first base of sequential codons. There are 3 possible reading frames in an mRNA strand and six in a double stranded DNA molecule due to the two strands from which tr ...
Slide 1
Slide 1

... fit through nuclear membrane, so it needs to send a “messenger” RNA (mRNA) to the ribosomes to make proteins. DNA is very important and must be kept protected! ...
Chapter 15 – DNA to Proteins
Chapter 15 – DNA to Proteins

... • It is redundant. – All amino acids except two are encoded by more than one codon. • It is unambiguous. – One codon never codes for more than one amino acid. ...
Text S3: Fatty acid synthesis and catabolism
Text S3: Fatty acid synthesis and catabolism

... obvious genes for transport or incorporation of these two fatty acid precursors are apparent from the metabolic reconstruction, suggesting that they may enter the cell in their protonated (uncharged) forms by passive diffusion. As in amino acid metabolism, F. succinogenes appears to be unable to deg ...
Objectives Unit 5
Objectives Unit 5

... of DNA and RNA to support the claim that DNA and, in some cases, that RNA are the primary sources of heritable information. 2) The student is able to justify the selection of data from historical investigations that support the claim that DNA is the source of heritable information. 3) The student is ...
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Genetic code



The genetic code is the set of rules by which information encoded within genetic material (DNA or mRNA sequences) is translated into proteins by living cells. Biological decoding is accomplished by the ribosome, which links amino acids in an order specified by mRNA, using transfer RNA (tRNA) molecules to carry amino acids and to read the mRNA three nucleotides at a time. The genetic code is highly similar among all organisms and can be expressed in a simple table with 64 entries.The code defines how sequences of these nucleotide triplets, called codons, specify which amino acid will be added next during protein synthesis. With some exceptions, a three-nucleotide codon in a nucleic acid sequence specifies a single amino acid. Because the vast majority of genes are encoded with exactly the same code (see the RNA codon table), this particular code is often referred to as the canonical or standard genetic code, or simply the genetic code, though in fact some variant codes have evolved. For example, protein synthesis in human mitochondria relies on a genetic code that differs from the standard genetic code.While the genetic code determines the protein sequence for a given coding region, other genomic regions can influence when and where these proteins are produced.
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