Understanding Transcription and Nucleic Acid Differences Study Guide
Learn about essential molecular biology techniques for analyzing gene structure and function. This guide covers DNA manipulation, cloning, sequencing, and gene editing tools like CRISPR.
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Transcription Processes and RNA Evolution
Transcription and DNA to RNA Differences
RNA polymerase uses one strand of DNA as a template to synthesize a complementary RNA sequence through transcription.
- Transcription
- RNA polymerase
- Nucleotide subunits
- Phosphodiester bonds
- Deoxyribose
- Ribose
- Purines
- Pyrimidines
- Cytosine
- Uracil
- Hydrogen bonds
- Base-pairing interactions
Transcription and Differences Between DNA and RNA
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Transcription of DNA to RNA
RNA polymerase transcribes a DNA template into RNA using specific signals including promoters and terminators.
- Transcription
- RNA polymerase
- Promoter
- Transcription start site
- Transcription stop site
- Terminator
- Bacterial RNA polymerase
- Sigma factor
- Eukaryotic transcription initiation
- General transcription factors
- TATA box
- TFIID
RNA and the Origins of Life
RNA molecules may have preceded DNA and proteins in evolution by providing genetic, structural, and catalytic functions.
- RNA world hypothesis
- Autocatalysis
- Ribozymes
- Viroids
- RNA replication
- Genetic information storage
- Catalytic activity
Genetic Mechanisms, Evolution, and Molecular Analysis
Germ-line, Somatic Cells, and Mutations
Genetic information is propagated into the next generation exclusively by germ-line cells through mutations in germ-line and somatic cells.
- Germ cell
- Germ line
- Somatic cell
- Point mutation
- Gene regulation
- Lactose tolerance
- Malaria resistance
Evolution of Genes and Genomes
Genome comparisons and sequence conservation allow for the reconstruction of phylogenetic trees and the tree of life.
- genetic changes
- selective advantage
- genome organization
- sequence conservation
- purifying selection
- phylogenetic tree
- point mutation
- small-subunit rRNA gene
- tree of life
- Bacteria
- Archaea
- Eukaryotes
Mobile Genetic Elements and Viruses
Mobile genetic elements and viruses move between cells and organisms through mechanisms such as cut-and-paste transposition, replicative transposition, and reverse transcription.
- Mobile genetic elements
- Transposons
- DNA-only transposons
- Cut-and-paste transposition
- Replicative transposition
- Transposase
- Antibiotic resistance genes
- Retrotransposons
- Reverse transcription
- RNA intermediate
- Viruses
- Coronaviruses
- Retrovirus
Analyzing the Structure and Function of Genes
This lecture covers isolating and cloning DNA molecules, sequencing DNA, and exploring gene function through techniques like restriction enzymes, gel electrophoresis, and recombinant DNA production.
- Restriction enzymes
- Gel electrophoresis
- DNA cloning
- Recombinant DNA
- DNA ligase
- Plasmids
- Transformation
- DNA library
- Genomic library
- cDNA library
- PCR
Techniques for Analyzing and Manipulating Gene Function
Analyzing Structure and Function of Genes
Isolating and cloning DNA molecules, sequencing DNA, and exploring gene function through restriction enzymes, gel electrophoresis, and recombinant DNA production.
- Restriction enzymes
- Gel electrophoresis
- DNA cloning
- Recombinant DNA
- DNA ligase
- Plasmids
- Transformation
- Genomic library
- cDNA library
- Nucleic acid hybridization
- Denaturation
- Renaturation
Analyzing the Structure and Function of Genes
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Analyzing DNA Amplification and PCR Applications
PCR uses DNA polymerase and specific DNA primers to amplify DNA sequences through repeated rounds of strand separation, hybridization, and synthesis.
- PCR
- DNA polymerase
- DNA primers
- DNA denaturation
- Hybridization
- Genomic DNA clones
- cDNA clones
- Short tandem repeats (STRs)
- Diagnostic applications
- Forensic applications
Analyzing Gene Structure and Function
Methods for sequencing DNA and exploring gene function through mRNA analysis, gene editing, and comparative genome analyses.
- Dideoxy sequencing
- Next-generation sequencing
- Second-generation sequencing
- Third-generation sequencing
- Illumina sequencing
- Single Molecule Real Time Sequencing
- Gene expression analysis
- In situ hybridization
- Ribosome profiling
- Reporter genes
- RNA interference
- CRISPR system
- Transgenic plants
- DNA cloning
- RNA-Seq
- Transcriptome analysis
Techniques to Study and Manipulate Gene Function
Techniques such as in situ hybridization, reporter genes, RNA interference, CRISPR, and DNA cloning allow investigators to study gene expression and function.
- In situ hybridization
- Reporter genes
- Green fluorescent protein (GFP)
- RNA interference (RNAi)
- Transgenic organisms
- CRISPR system
- Agrobacterium tumefaciens
- DNA cloning
- Expression vector
Mechanisms and Regulation of Gene Expression
Overview of Gene Expression Control
Gene expression can be regulated at various steps from DNA to RNA to protein to allow different cell types to produce different sets of proteins.
- Gene expression regulation
- Transcription regulation
- Post-transcriptional controls
- Cell differentiation
- Protein composition
- External signals
- RNA processing
- mRNA degradation
- Translation regulation
- Protein destruction
Overview of Gene Expression Control
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Mechanisms of Gene Expression Control
Transcription regulators bind to regulatory DNA sequences to allow cells to respond to changes in their environment through activators and repressors.
- Transcription regulators
- Regulatory DNA sequences
- Repressors
- Activators
- Eukaryotic transcription regulation
- Chromatin-modifying proteins
- Enhancers
- Operons
- Trp operator
- Tryptophan biosynthesis
- CAP activator
- Lac repressor
- β-galactosidase
Eukaryotic Control of Gene Expression
Eukaryotic transcription regulators use activators, repressors, and enhancers to control gene expression through DNA looping and chromatin modification.
- Eukaryotic transcription regulators
- Activators and repressors
- Enhancers
- DNA looping
- Chromatin-modifying proteins
- Chromatin-remodeling complexes
- Histone acetyltransferases
- Combinatorial control
- Gene coordination
Mechanisms and Techniques of Genome Evolution and Analysis
How Genes and Genomes Evolve
- gene duplication and divergence
- whole-genome duplications
- mobile genetic elements
- transposons
- horizontal gene transfer
- vertical gene transfer
- bacterial conjugation
Viral Genome Evolution and Replication
Viruses hijack host biochemical and molecular machinery to reproduce using genomes that are either double-stranded DNA or single-stranded RNA.
- viral genome
- double-stranded DNA
- single-stranded RNA
- retrovirus
- RNA-dependent RNA polymerase
- reverse transcriptase
- reverse transcription
- integration
- SARS-CoV-2
- HIV
Nucleic Acid Hybridization and PCR
Nucleic acid hybridization detects specific nucleotide sequences through base-pairing, while PCR uses DNA polymerase and primers to amplify DNA fragments.
- Nucleic acid hybridization
- DNA denaturation
- Renaturation
- Base-pairing
- PCR
- DNA polymerase
- Primers
- Genomic clones
- cDNA clones
- Short tandem repeats
- Diagnostic applications
- Forensic applications
Analyzing Gene Structure and Function
Techniques including dideoxy sequencing, next-generation sequencing, and mRNA analysis are used to identify genes and explore gene function.
- Dideoxy sequencing
- Next-generation sequencing
- Second-generation sequencing
- Third-generation sequencing
- Illumina sequencing
- Single Molecule Real Time Sequencing
- Gene expression analysis
- In situ hybridization
- Ribosome profiling
- Reporter genes
- RNA interference
- CRISPR system
- DNA cloning
- RNA-Seq
- Transcriptome analysis
Visualizing Gene Expression and Protein Location
Investigators use in situ hybridization and reporter genes to reveal patterns of gene expression and track specific proteins within cells and tissues.
- In situ hybridization
- RNA-Seq
- Gene expression patterns
- Reporter genes
- Green fluorescent protein (GFP)
- β-galactosidase
- Regulatory DNA sequences
Testing Gene Function and Producing Transgenic Organisms
Techniques such as RNA interference, CRISPR, and recombinant DNA allow for gene inactivation, precise gene editing, and the production of transgenic organisms.
- RNA interference (RNAi)
- Double-stranded RNA (dsRNA)
- Transgenic organisms
- Genetically modified organisms (GMOs)
- Transgene
- CRISPR system
- Cas9 enzyme
- Agrobacterium tumefaciens
- Recombinant DNA techniques
- Golden rice
- DNA cloning
- Expression vector
- Plasmid
Mechanisms of Gene Expression and Regulation
From DNA to Protein Synthesis
How cells read the genome through the translation of mRNA into proteins in prokaryotes and eukaryotes.
- mRNA translation
- Specific codons
- Translation initiation factors
- Stop codons
- Release factor
- Polyribosomes
- Prokaryotic operons
- Antibiotics inhibiting protein synthesis
Regulation of Protein Synthesis and Degradation
Cells control protein activity and longevity by adjusting the rate of protein synthesis and the rate of protein degradation through proteolysis.
- protein synthesis
- protein degradation
- proteolysis
- proteases
- proteasomes
- polyubiquitin chain
- transcription initiation
- gene expression
Overview of Gene Expression and Regulation
Gene expression can be regulated at various steps from DNA to RNA to protein to produce different sets of proteins in different cell types.
- Gene expression regulation
- Transcription regulation
- Post-transcriptional controls
- Cell differentiation
- Multicellular organism cell types
- Protein composition
- External signals
- RNA processing
- mRNA export
- mRNA degradation
- Translation regulation
- Protein destruction
Control of Gene Expression
Transcription regulators bind to regulatory DNA sequences to switch genes on or off through activators and repressors.
- transcription regulators
- regulatory DNA sequences
- repressors
- activators
- eukaryotic transcription regulators
- chromatin-modifying proteins
- enhancers
- operons
- Trp operator
- tryptophan biosynthesis
- CAP activator
- β-galactosidase
- cAMP
Post-transcriptional Controls and Regulatory RNAs
Post-transcriptional controls involve mRNAs containing sequences that control translation and regulatory RNAs that control the expression of thousands of genes.
- Post-transcriptional controls
- mRNA translation control
- Regulatory RNAs
- MicroRNAs (miRNAs)
- Small interfering RNAs (siRNAs)
- Long noncoding RNAs
- RNA degradation
- Untranslated regions
- RNA-induced silencing complex (RISC)
- Thermosensor RNA sequence
Eukaryotic mRNA Processing and Export
Eukaryotic mRNAs undergo processing steps including capping, splicing, and polyadenylation in the nucleus before being exported to the cytosol for translation.
- Eukaryotic mRNA processing
- RNA capping
- Splicing
- Polyadenylation
- Nuclear export
- 5' untranslated region (5' UTR)
- 3' untranslated region (3' UTR)
- Nucleolus
- Ribosomal RNA synthesis
Eukaryotic Gene Processing and RNA Splicing
Eukaryotic genes contain introns and exons that undergo RNA splicing to produce mature mRNA for export from the nucleus to the cytosol.
- Introns
- Exons
- RNA splicing
- Lariat structure
- Small nuclear ribonucleoproteins (snRNPs)
- Spliceosome
- Alternative splicing
- mRNA export
- Prokaryotic vs eukaryotic gene organization
From RNA to Protein Translation
The process by which an mRNA sequence is decoded into an amino acid sequence in a protein using ribosomes, tRNAs, and the genetic code.
- Translation
- Genetic code
- Codon
- Reading frame
- Stop codons
- Initiation codon
- Aminoacyl-tRNA synthetases
- Ribosomes
- Ribozymes
- A, P, and E sites
From DNA to Protein Synthesis and Regulation
From DNA to Protein Synthesis
Genetic information directs the synthesis of proteins through transcription of DNA into RNA and subsequent RNA processing.
- Transcription
- RNA polymerase
- Eukaryotic gene transcription
- mRNA processing
- Introns
- RNA splicing
Eukaryotic mRNA Processing and Export
Eukaryotic mRNAs undergo processing steps including capping, splicing, and polyadenylation in the nucleus before being exported to the cytosol for translation.
- Eukaryotic mRNA processing
- RNA capping
- Splicing
- Polyadenylation
- mRNA export
- Nucleolus
- 5' untranslated region (5' UTR)
- 3' untranslated region (3' UTR)
Eukaryotic Gene Processing and RNA Splicing
Eukaryotic protein-coding genes contain introns and exons that undergo RNA splicing to produce mature mRNA.
- introns
- exons
- RNA splicing
- lariat structure
- small nuclear RNAs (snRNAs)
- small nuclear ribonucleoproteins (snRNPs)
- spliceosome
- alternative splicing
- nuclear pore complexes
- mRNA export
- prokaryotic transcription
Translation From RNA to Protein
The process by which an mRNA sequence is decoded into an amino acid sequence in a protein using ribosomes, tRNAs, and the genetic code.
- Translation
- Genetic code
- Codon
- Reading frame
- Stop codons
- Initiation codon
- Aminoacyl-tRNA synthetases
- Charging
- Ribosomes
- Ribozymes
- A, P, and E sites
From DNA to Protein Synthesis
This lecture covers how cells read the genome from DNA to RNA and from RNA to protein, including translation initiation, elongation, and termination.
- translation initiation
- ribosome
- stop codons
- polyribosomes
- prokaryotic protein synthesis
- eukaryotic protein synthesis
- operons
- release factor
- antibiotics
Protein Regulation and Proteasome Degradation
Cells regulate protein amount and activity by adjusting the rates of protein synthesis and protein degradation through proteases and proteasomes.
- protein synthesis
- protein degradation
- proteolysis
- proteases
- proteasomes
- polyubiquitin chain
- transcription initiation
- gene expression
Post-transcriptional Control of Gene Expression
Post-transcriptional controls involve mRNAs containing sequences that control translation and regulatory RNAs that control the expression of thousands of genes.
- Post-transcriptional controls
- mRNA translation control
- Regulatory RNAs
- MicroRNAs (miRNAs)
- Small interfering RNAs (siRNAs)
- Long noncoding RNAs
- RNA degradation
- RNA-induced silencing complex (RISC)
- Thermosensor RNA sequences
Molecular Mechanisms of Genetic Information and Evolution
RNA and the Origins of Life
RNA molecules may have predated DNA and proteins in evolution by providing genetic, structural, and catalytic functions.
- RNA world hypothesis
- autocatalysis
- ribozymes
- viroids
- RNA replication
- genetic information storage
Viral Evolution and Replication Mechanisms
Viruses hijack host biochemical and molecular machinery to reproduce using genomes that are either double-stranded DNA or single-stranded RNA.
- Double-stranded DNA viruses
- Single-stranded RNA viruses
- Retroviruses
- RNA-dependent RNA polymerase (RdRP)
- Reverse transcriptase
- Reverse transcription
- Viral genome integration
- SARS-CoV-2 replication
- HIV infection
- Antiviral drugs
DNA Replication and Repair Mechanisms
Cells possess a variety of mechanisms for repairing DNA damage, including mismatch repair, nonhomologous end joining, and homologous recombination.
- DNA damage
- Depurination
- Deamination
- Thymine dimers
- Permanent mutations
- Nuclease excision
- Resynthesis
- Ligation
- Mismatch repair system
- Double-strand breaks
- Nonhomologous end joining
- Homologous recombination
DNA Replication and Strand Synthesis
- 5’-to-3’ direction
- deoxyribonucleoside triphosphates
- DNA polymerase
- Okazaki fragments
- lagging strand
- leading strand
- DNA ligase
- replication fork
- backstitching
- template strands
From DNA to Protein Synthesis
Genetic information directs the synthesis of proteins through transcription of DNA into RNA and subsequent RNA processing.
- Transcription
- RNA polymerase
- Eukaryotic gene transcription
- RNA splicing
- Introns
- Mature eukaryotic mRNAs
- Nucleotides
- Phosphodiester bonds
- Ribose
- Uracil
- Purines
- Pyrimidines
- Hydrogen bonds
Transcription of DNA into RNA
RNA polymerase transcribes a gene to produce an RNA complementary to a DNA template strand using promoter and terminator signals.
- Transcription
- RNA polymerase
- Promoter
- Transcription start site
- Transcription stop site
- Terminator
- Bacterial transcription
- Sigma factor
- Eukaryotic transcription
- General transcription factors
- TATA box
- DNA template strand
- Coding strand
Evolution of Genes, Genomes, and Molecular Mechanisms
Cell Biology Exam 2 Study Guide
A study guide covering DNA replication, gene expression, regulation, genetic variation, and molecular biology techniques.
- DNA replication
- Okazaki fragments
- DNA damage and repair
- eukaryotic mRNA processing
- genetic code
- translation initiation and termination
- gene expression regulation
- operons
- regulatory RNAs
- genetic variation
- transposons
- retroviruses
- restriction nucleases
- gel electrophoresis
- plasmid vectors
- PCR
- Sanger sequencing
How Genes and Genomes Evolve
Mechanisms such as point mutations, gene duplication, gene conversion, mobile genetic elements, and horizontal gene transfer contribute to the evolution of genes and genomes.
- point mutations
- germ line
- DNA duplications
- whole-genome duplications
- gene conversion
- mobile genetic elements
- horizontal gene transfer
- regulatory DNA
- hybrid genes
- transposition
Germ-line, Somatic Cells, and Mutations
In sexually reproducing organisms, genetic information is propagated into the next generation exclusively by germ-line cells through mutations in germ-line and somatic cells.
- germ cell
- germ line
- somatic cell
- mutations
- point mutation
- gene regulation
- lactose tolerance
- malaria resistance
Evolution of Genes and Genomes
Mechanisms such as gene duplication, gene conversion, mobile genetic elements, and horizontal gene transfer drive the evolution of genes and genomes.
- Gene duplication and divergence
- Gene families
- Whole-genome duplications
- gene conversion
- Mobile genetic elements
- Transposons
- Horizontal gene transfer
- Vertical gene transfer
- Bacterial conjugation
Genome Comparisons and Phylogenetic Trees
Genome comparisons and sequence conservation allow for the reconstruction of phylogenetic trees and the tree of life.
- genetic changes
- selective advantage
- genome organization
- sequence conservation
- purifying selection
- phylogenetic tree
- point mutation
- small-subunit rRNA gene
- tree of life
- Bacteria
- Archaea
- Eukaryotes
Mobile Genetic Elements and Viruses
Mobile genetic elements and viruses move through mechanisms such as cut-and-paste transposition, replicative transposition, and reverse transcription.
- Mobile genetic elements
- Transposons
- DNA-only transposons
- Cut-and-paste transposition
- Replicative transposition
- Transposase
- Antibiotic resistance genes
- Retrotransposons
- Reverse transcription
- RNA intermediate
- Viruses
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