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2.5.15 Summary - Intermediate School Biology
2.5.15 Summary - Intermediate School Biology

... components called bases. Adenine bonds with Thymine, Cytosine bonds with Guanine. These specific base pairing couples are called complementary base pairs. There are two hydrogen bonds between A & T and three between C & G. These letters form the code of life. There are some 3bn base pairs in the ent ...
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PSI Genes- Homework

... coded for would be different. A change in the sequence of amino acids results in a change of the primary structure of protein, which would result in changes to the secondary and tertiary structure, and therefore the function of the protein. a. The steps of transcription are initiation, elongation, a ...
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Protein Synthesis - Napa Valley College

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... One fact which was accepted unconditionally was that we are the descendants of our parents and similar to them. Furthermore, it was accepted that this similarity was part of the definition of the species: humans birth humans, frogs lay eggs that hatch to become frogs, and so forth. Most of history, ...
Chapter 12 - Pathways to Biomolecules
Chapter 12 - Pathways to Biomolecules

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... – Assume that there are at least 100,000 pairs of genes in humans, and that the average mutation rate/gene/generation is 10-5 – The average number of mutations arising per generation would then be estimated as at least: 2 X 105 X 10-5 mutations/gene = 2 mutations for a human zygote – There are about ...
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Protein Module Student Handout Name__________________ 1

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Bio slides on cells - proteinsynthesis1unity

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Chp 11.2: Nucleic Acid structure and sequence
Chp 11.2: Nucleic Acid structure and sequence

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... • Normally, all residues in a protein are identical for a species. • Some individuals may produce a protein with one or more ‘incorrect’ residues. Example - sickle cell anemia. Two ‘incorrect’ amino acid residues result in malformed hemoglobin. This causes deformation of red blood cells. ...
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... When too much carbohydrate is consumed and not used for energy over an extended period of time, it is stored as fat. Building up too much fat will increase body weight. Increase dental caries It is important that teeth are brushed twice a day and sugary foods should be eaten with main meals, rather ...
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... an enzyme in a pathway inhibits one of the earlier enzymes in the pathway. an intermediate in a pathway inhibits one of the earlier enzymes in the pathway. the initial substrate of a pathway inhibits one of the enzymes in the pathway. the end product of a pathway inhibits one of the enzymes in the p ...
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... inactivate a protein unless it is in the active site of an enzyme, a ligand binding site or in an essential structural position (such as a sharp turn where only certain conformations can occur, or in amino acids involved in salt bridges in the interior of the molecule). Many single amino acid mutati ...
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... (genetic) information. • There are 2 kinds of nucleic acids: – Ribonucleic acid (RNA), which contains the sugar ribose – Deoxyribonucleic acid (DNA), which contains the sugar deoxyribose ...
TRASK Zool 3200: Cell Biology Exam 1
TRASK Zool 3200: Cell Biology Exam 1

... After reviewing the data, answer the following questions about Keilin’s experiments: 1. Are the visible bands in the top image due to reduced or oxidized forms of the proteins? (2 points) The visible bands represent the reduced forms of the three electron transport chain (ETC) proteins. This is able ...
Central Dogma of Molecular Biology
Central Dogma of Molecular Biology

... sequence of amino acids that make up the protein. Instructions for making proteins with the correct sequence of amino acids are encoded in DNA. DNA is found in chromosomes. In eukaryotic cells, chromosomes always remain in the nucleus, but proteins are made at ribosomes in the cytoplasm. How do the ...
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Exam I F'01 (1710).doc

... Darwin collected fossils of extinct species from around the world. Comparing these to living plant and animal species he discovered that: a) extinct species of a continent generally resembled the living species of that continent. b) extinct species of all continents looked generally similar to each ...
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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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