20141203103493
... Acetylation of histone tails promotes loose chromatin structure that permits transcription ...
... Acetylation of histone tails promotes loose chromatin structure that permits transcription ...
Ch 18.2-18.5 PPT
... Modifications on chromatin can be passed on to future generations Unlike DNA mutations, these changes to chromatin can be reversed (de-methylation of DNA) Explains differences between identical twins ...
... Modifications on chromatin can be passed on to future generations Unlike DNA mutations, these changes to chromatin can be reversed (de-methylation of DNA) Explains differences between identical twins ...
Unit 7 Study Guide ANSWERS 2014
... 10. What determines the specificity of a protein? The order of the nitrogenous bases in the DNA 11. In a eukaryotic cell, where does mRNA processing take place? During Transcription 12. What are the two processes that link the gene to the protein? Transcription and Translation 13. Proteins are made ...
... 10. What determines the specificity of a protein? The order of the nitrogenous bases in the DNA 11. In a eukaryotic cell, where does mRNA processing take place? During Transcription 12. What are the two processes that link the gene to the protein? Transcription and Translation 13. Proteins are made ...
ANNEX B: Selected Biotechnology Terms
... Antibodies destroy or weaken bacteria and neutralize organic poisons, thus forming the basis of immunity. Bioregulators – chemicals or enzymes that control physiological functions, such as pain, sleep, or mood. Cloning – the process of preparing a largely identical group of organisms, cells, viruses ...
... Antibodies destroy or weaken bacteria and neutralize organic poisons, thus forming the basis of immunity. Bioregulators – chemicals or enzymes that control physiological functions, such as pain, sleep, or mood. Cloning – the process of preparing a largely identical group of organisms, cells, viruses ...
CS 262—Lecture 1 Notes • 4-‐5 HWs, 3 late days • (Optional
... • 4 nucleotide bases: Adenine (A), Guanine (G), Thymine (T), Cytosine (C) o A binds with T and C binds with G o As such, DNA is double stranded • DNA must be read from 5’ to 3’ end • RNA u ...
... • 4 nucleotide bases: Adenine (A), Guanine (G), Thymine (T), Cytosine (C) o A binds with T and C binds with G o As such, DNA is double stranded • DNA must be read from 5’ to 3’ end • RNA u ...
Slide 1 - AccessPharmacy
... Schematic diagram showing the transcription control regions in a hypothetical mRNA-producing, eukaryotic gene transcribed by RNA polymerase II. Such a gene can be divided into its coding and regulatory regions, as defined by the transcription start site (arrow; +1). The coding region contains the DN ...
... Schematic diagram showing the transcription control regions in a hypothetical mRNA-producing, eukaryotic gene transcribed by RNA polymerase II. Such a gene can be divided into its coding and regulatory regions, as defined by the transcription start site (arrow; +1). The coding region contains the DN ...
013368718X_CH13_193
... 3. RNA polymerase transfers amino acids to ribosomes. 4. The process of transcription produces a complementary strand of RNA on a DNA template. 5. The enzyme that assembles a complementary strand of RNA on a DNA template is RNA polymerase. 6. The region of DNA where the production of an RNA strand b ...
... 3. RNA polymerase transfers amino acids to ribosomes. 4. The process of transcription produces a complementary strand of RNA on a DNA template. 5. The enzyme that assembles a complementary strand of RNA on a DNA template is RNA polymerase. 6. The region of DNA where the production of an RNA strand b ...
Key concepts_Regulation of transcription in Bacteria
... Within a bacterial cell, the expression of some genes is regulated to respond to environmental changes. Other constitutive or housekeeping genes are transcribed uniformly to maintain cellular functions. Regulation may occur in many ways: the most direct is through differences in promoter strength or ...
... Within a bacterial cell, the expression of some genes is regulated to respond to environmental changes. Other constitutive or housekeeping genes are transcribed uniformly to maintain cellular functions. Regulation may occur in many ways: the most direct is through differences in promoter strength or ...
RNA polymerases
... Approximately 200 adenylate residues-the so-called poly(A) tail-are added to the mRNA, Facilitates nuclear export and translation ...
... Approximately 200 adenylate residues-the so-called poly(A) tail-are added to the mRNA, Facilitates nuclear export and translation ...
«題目»
... The molecular basis of epigenetics involves modifications to DNA and histone proteins that associate with the regulation of gene expression but that do not result from mutation or changes to the DNA sequence. The four core histone proteins are subject to post-translational modifications, such as ace ...
... The molecular basis of epigenetics involves modifications to DNA and histone proteins that associate with the regulation of gene expression but that do not result from mutation or changes to the DNA sequence. The four core histone proteins are subject to post-translational modifications, such as ace ...
Eukaryotic Gene Expression
... • very extended and tangled during interphase • condensed into discrete chromosomes during mitosis ...
... • very extended and tangled during interphase • condensed into discrete chromosomes during mitosis ...
differential gene expression
... cytosine that are followed by guanine • Different cells have different methylation patterns, which contributes to the differences in gene expression in different cell types. • Methylation makes DNA less likely to be transcribed ...
... cytosine that are followed by guanine • Different cells have different methylation patterns, which contributes to the differences in gene expression in different cell types. • Methylation makes DNA less likely to be transcribed ...
Ch. 18 Warm-Up
... Catabolic (break down food for energy) Repressor is active inducer binds to and inactivates repressor Operon is turned ON Eg. lac operon ...
... Catabolic (break down food for energy) Repressor is active inducer binds to and inactivates repressor Operon is turned ON Eg. lac operon ...
Genes - sandsbiochem
... Catabolic (break down food for energy) Repressor is active inducer binds to and inactivates repressor Operon is turned ON Eg. lac operon ...
... Catabolic (break down food for energy) Repressor is active inducer binds to and inactivates repressor Operon is turned ON Eg. lac operon ...
4-5
... Circle the letter of the answer that best completes the statement. A group of genes that work together in a pathway and are controlled by one on/off switch is known as a(n) _______________________ A. codon B. operator C. operon D. gene group When the lac repressor protein binds to the ______________ ...
... Circle the letter of the answer that best completes the statement. A group of genes that work together in a pathway and are controlled by one on/off switch is known as a(n) _______________________ A. codon B. operator C. operon D. gene group When the lac repressor protein binds to the ______________ ...
A CAAT–Box Binding Factor Gene That Regulates Seed Development
... repeated several times in the genome, with different roles for different locations. • recognition sites for many biological processes. •Examples: Consensus sequences can be found in transcription factor sites, restriction sites, transposon insertion sites, and splice sites. ...
... repeated several times in the genome, with different roles for different locations. • recognition sites for many biological processes. •Examples: Consensus sequences can be found in transcription factor sites, restriction sites, transposon insertion sites, and splice sites. ...
Gene Regulation: Prokaryotes and Eukaryotes
... (corepressor) (b) Tryptophan present, repressor active, operon off. As tryptophan accumulates, it inhibits its own production by activating the repressor protein. ...
... (corepressor) (b) Tryptophan present, repressor active, operon off. As tryptophan accumulates, it inhibits its own production by activating the repressor protein. ...
regulatory gene
... ◦ Transposition (DNA segments move with and between molecules) “jumping genes”—move from chromosome to plasmid ...
... ◦ Transposition (DNA segments move with and between molecules) “jumping genes”—move from chromosome to plasmid ...
Transcription Factors
... 1. Transcriptional Controls a. Promoters— b. Control Elements—segments of noncoding DNA that act as binding sites for transcription factors c. Transcription Factors— d. Activators (transcription factors that activate) and Enhancers (distal control elements)—work together to turn on non-adjacent gene ...
... 1. Transcriptional Controls a. Promoters— b. Control Elements—segments of noncoding DNA that act as binding sites for transcription factors c. Transcription Factors— d. Activators (transcription factors that activate) and Enhancers (distal control elements)—work together to turn on non-adjacent gene ...