Cell Aging
... • Apoptosis - Programmed cell death resulting from intrinsic damage and genetically determined events or genome crisis. • Senescence - Phenotypes of aging are caused by an increase in frequency of senescent cells. Senescence may be the result of telomere loss (replicative senescence) or cell stress ...
... • Apoptosis - Programmed cell death resulting from intrinsic damage and genetically determined events or genome crisis. • Senescence - Phenotypes of aging are caused by an increase in frequency of senescent cells. Senescence may be the result of telomere loss (replicative senescence) or cell stress ...
DNA REPLICATION HANDOUT
... 2) Replication Fork: Y-shaped region where new strands of DNA are elongated 3) Okazaki Fragments: Only found on the lagging strand. Since DNA is connected by base pairs, as the original strand “unzips” one of the templates is running in the 5’ to 3’ direction, while the other is 3’ to 5’. As you kno ...
... 2) Replication Fork: Y-shaped region where new strands of DNA are elongated 3) Okazaki Fragments: Only found on the lagging strand. Since DNA is connected by base pairs, as the original strand “unzips” one of the templates is running in the 5’ to 3’ direction, while the other is 3’ to 5’. As you kno ...
1 - BEHS Science
... 15.complementary: the sequence of bases on one strand determines the sequence of bases on the other strand 16.replication: the process of synthesizing a new strand of DNA 17.helicase: enzymes that catalyze the unwinding and separation of double-stranded DNA or RNA during its replication 18.replicati ...
... 15.complementary: the sequence of bases on one strand determines the sequence of bases on the other strand 16.replication: the process of synthesizing a new strand of DNA 17.helicase: enzymes that catalyze the unwinding and separation of double-stranded DNA or RNA during its replication 18.replicati ...
DNA Quick Notes
... Elongation only occurs in the 5’ to 3’ direction as new nucleotides have their 5’ carbon joined with the trailing 3’ carbon of the growing strand through a phosphodiester bond. Leading strand- where DNA elongation can occur in the same direction as the replication fork in going, it’s easy to add DNA ...
... Elongation only occurs in the 5’ to 3’ direction as new nucleotides have their 5’ carbon joined with the trailing 3’ carbon of the growing strand through a phosphodiester bond. Leading strand- where DNA elongation can occur in the same direction as the replication fork in going, it’s easy to add DNA ...
Mitochondrial DNA - Winona Senior High School
... • 25-50 cycles run to amplify DNA(each doubles the DNA) ...
... • 25-50 cycles run to amplify DNA(each doubles the DNA) ...
DNA Replication - The Biology Corner
... 5. The other side is the lagging strand - its moving away from the helicase (in the 5' to 3' direction). Problem: it reaches the replication fork, but the helicase is moving in the opposite direction. It stops, and another polymerase binds farther down the chain. This process creates several fragmen ...
... 5. The other side is the lagging strand - its moving away from the helicase (in the 5' to 3' direction). Problem: it reaches the replication fork, but the helicase is moving in the opposite direction. It stops, and another polymerase binds farther down the chain. This process creates several fragmen ...
Alternative Approaches to Molecular Biology
... With a circular chromosome, the DNA is continuous – it has no "end". This means that there will always be DNA from which to make the RNA primer for the lagging strand. d) Other organisms have non-coding sequences at the ends of linear chromosomes called telomeres. A telomere is simply a long stretch ...
... With a circular chromosome, the DNA is continuous – it has no "end". This means that there will always be DNA from which to make the RNA primer for the lagging strand. d) Other organisms have non-coding sequences at the ends of linear chromosomes called telomeres. A telomere is simply a long stretch ...
multiple choice
... 1. List the enzymes and proteins involved in DNA replication. Describe the function of each. 2. Describe the structure of eukaryotic chromatin from the basic building blocks to the compact structure found in metaphase cells. Include all proteins involved in forming the structure and all intermediate ...
... 1. List the enzymes and proteins involved in DNA replication. Describe the function of each. 2. Describe the structure of eukaryotic chromatin from the basic building blocks to the compact structure found in metaphase cells. Include all proteins involved in forming the structure and all intermediate ...
Test Study Guide
... 15. What is the center of the chromosome called? 16. What are the tips of a chromosome called? 17. What problem occurs at the tips of chromosomes during replication? 18. What enzyme attempts to “fix” this problem? How? ...
... 15. What is the center of the chromosome called? 16. What are the tips of a chromosome called? 17. What problem occurs at the tips of chromosomes during replication? 18. What enzyme attempts to “fix” this problem? How? ...
Genomics – The Language of DNA
... VNTR may result from unequal crossover. It is the molecular basis of DNA fingerprinting which has many practical applications ...
... VNTR may result from unequal crossover. It is the molecular basis of DNA fingerprinting which has many practical applications ...
DNA to Protein - Duplin County Schools
... 1. After watching the animation, what is the correct sequence of the following statements? ___________ A. B. C. D. E. ...
... 1. After watching the animation, what is the correct sequence of the following statements? ___________ A. B. C. D. E. ...
DNA Structure and Replication
... • Promoters = “start here” part of sequence • Introns = extra sequences between polypeptide-specifying portions, are not expressed, interrupt most eukaryotic genes • Exons = portions of a gene that are expressed ...
... • Promoters = “start here” part of sequence • Introns = extra sequences between polypeptide-specifying portions, are not expressed, interrupt most eukaryotic genes • Exons = portions of a gene that are expressed ...
Plant Telomere Biology
... then fused to recreate a dicentric chromosome (McClintock, 1938). The question she was asking now was whether this chromosome breakage-fusion-bridge cycle would continue indefinitely. To answer the question, McClintock placed her dicentric-generating chromosome 9 in a background with a normal chromo ...
... then fused to recreate a dicentric chromosome (McClintock, 1938). The question she was asking now was whether this chromosome breakage-fusion-bridge cycle would continue indefinitely. To answer the question, McClintock placed her dicentric-generating chromosome 9 in a background with a normal chromo ...
Human karyotype
... • Nucleus is 5 microns (0.005 mm) diameter • DNA must be properly packaged, not just tangled up and stuffed into nucleus • Packaging involves coiling and folding the DNA in specific ways • Special proteins are associated with DNA together called chromatin ...
... • Nucleus is 5 microns (0.005 mm) diameter • DNA must be properly packaged, not just tangled up and stuffed into nucleus • Packaging involves coiling and folding the DNA in specific ways • Special proteins are associated with DNA together called chromatin ...
Chromosomes Eukaryote
... •Humans typically have 23 pairs in each cell. •(Mostly) numbered from biggest to smallest. •Help organize, protect, and regulate the expression of DNA. •Are only this compact during cell division. •Do not come in 23 colors. ...
... •Humans typically have 23 pairs in each cell. •(Mostly) numbered from biggest to smallest. •Help organize, protect, and regulate the expression of DNA. •Are only this compact during cell division. •Do not come in 23 colors. ...
Name Period
... 23)Describe replication in e coli in terms of origin, termination and bi directional 24)Contrast endonuclease from exonucleases 25)What is the function of a helicase enzyme? 26)What is meant by Semi discontinuous replication? 27)Contrast leading strand and lagging strand 28)What are Ozaki fragments? ...
... 23)Describe replication in e coli in terms of origin, termination and bi directional 24)Contrast endonuclease from exonucleases 25)What is the function of a helicase enzyme? 26)What is meant by Semi discontinuous replication? 27)Contrast leading strand and lagging strand 28)What are Ozaki fragments? ...
DOC
... 1. When you input the mRNA sequence of your gene of interest into Ambion’s website, what nucleotide pattern does it look for to come up with a list of candidate siRNA sequences? Ambion’s algorithm searches for the AA(N19) pattern of nucelotides. ...
... 1. When you input the mRNA sequence of your gene of interest into Ambion’s website, what nucleotide pattern does it look for to come up with a list of candidate siRNA sequences? Ambion’s algorithm searches for the AA(N19) pattern of nucelotides. ...
Title - Iowa State University
... Antiparallel-Two strands that are parallel but going in different directions. Semi-conservative- The mechanism which DNA replicate, where the parent strands separate and serve as a template for the daughter strands, etc. Complementary- Opposites that combine to form the whole. Replication fork- Wher ...
... Antiparallel-Two strands that are parallel but going in different directions. Semi-conservative- The mechanism which DNA replicate, where the parent strands separate and serve as a template for the daughter strands, etc. Complementary- Opposites that combine to form the whole. Replication fork- Wher ...
Molecular Basis for Relationship between Genotype and Phenotype
... The Problem of Replicating Chromosome Ends ...
... The Problem of Replicating Chromosome Ends ...
Chapter 16: The Molecular Basis of Inheritance
... Avery, McCarty and MacLeod; Hershey and Chase; Chargaff; Watson and Crick; Franklin and Wilkins 2. A particular organism’s DNA is found to be 19% Adenine. What are the values of the other DNA bases for this organism? 3. Explain why DNA replication is described as “semi-conservative”. 4. Discuss the ...
... Avery, McCarty and MacLeod; Hershey and Chase; Chargaff; Watson and Crick; Franklin and Wilkins 2. A particular organism’s DNA is found to be 19% Adenine. What are the values of the other DNA bases for this organism? 3. Explain why DNA replication is described as “semi-conservative”. 4. Discuss the ...
a copy of the Candy DNA Replication
... Clean all working surfaces and your hands before starting this activity. Your goal is to design a Powerpoint project (or a movie if you know how) that depicts all of the steps of DNA replication. Take photographs of each step and be sure they are easy to see on the Powerpoint. Include labels, arrows ...
... Clean all working surfaces and your hands before starting this activity. Your goal is to design a Powerpoint project (or a movie if you know how) that depicts all of the steps of DNA replication. Take photographs of each step and be sure they are easy to see on the Powerpoint. Include labels, arrows ...
Name period ______ Date
... Polymerase – Attaches new nucleotides to _____________ new strands 14) DNA Checkpoints - DNA must be replicated perfectly so the new cells that form are identical. The Cell cycle use proofreader enzymes to ensure there are no ____________ in the DNA Mutation – when an ____________ sequence gets copi ...
... Polymerase – Attaches new nucleotides to _____________ new strands 14) DNA Checkpoints - DNA must be replicated perfectly so the new cells that form are identical. The Cell cycle use proofreader enzymes to ensure there are no ____________ in the DNA Mutation – when an ____________ sequence gets copi ...
Telomere
A telomere is a region of repetitive nucleotide sequences at each end of a chromatid, which protects the end of the chromosome from deterioration or from fusion with neighboring chromosomes. Its name is derived from the Greek nouns telos (τέλος) 'end' and merοs (μέρος, root: μερ-) 'part.' For vertebrates, the sequence of nucleotides in telomeres is TTAGGG. This sequence of TTAGGG is repeated approximately 2,500 times in humans. During chromosome replication, the enzymes that duplicate DNA cannot continue their duplication all the way to the end of a chromosome, so in each duplication the end of the chromosome is shortened (this is because the synthesis of Okazaki fragments requires RNA primers attaching ahead on the lagging strand). The telomeres are disposable buffers at the ends of chromosomes which are truncated during cell division; their presence protects the genes before them on the chromosome from being truncated instead.Over time, due to each cell division, the telomere ends become shorter. They are replenished by an enzyme, telomerase reverse transcriptase.