File
... ◦ Each has half of the original DNA molecule and half new nucleotides ◦ Replication is semiconservative ...
... ◦ Each has half of the original DNA molecule and half new nucleotides ◦ Replication is semiconservative ...
Systems Biology Notes (Chapter 15, pp
... How many different amino acids could be used to form a single protein or polypeptide? ______________ ...
... How many different amino acids could be used to form a single protein or polypeptide? ______________ ...
Large molecules: Carbohydrates,DNA to Protein
... • Sequences of nucleotides can form hydrogen bonding between their nitrogenous bases. • The base pairing is complementary: At each position where a purine is found on one strand, a pyrimidine is found on the other. • Purines have a double-ring structure. Pyrimidines have one ring. ...
... • Sequences of nucleotides can form hydrogen bonding between their nitrogenous bases. • The base pairing is complementary: At each position where a purine is found on one strand, a pyrimidine is found on the other. • Purines have a double-ring structure. Pyrimidines have one ring. ...
Exam 1 Practice Answers
... A. Label the 5’ ends of all the DNA strands pictured: See Above B. Which strand serves as the template for leading strand synthesis? Strand B is the template for leading strand synthesis C. Which was synthesized first, strand D or E? Strand E was the first Okazaki Fragment Made and then the Polymera ...
... A. Label the 5’ ends of all the DNA strands pictured: See Above B. Which strand serves as the template for leading strand synthesis? Strand B is the template for leading strand synthesis C. Which was synthesized first, strand D or E? Strand E was the first Okazaki Fragment Made and then the Polymera ...
DNA and Replication
... holds the two complementary strands together • Topoisomerase – reduces the over twisting that happens when helicase unzips DNA. • Single Stranded Binding Proteins (SSBP) – act as a “door stop” to keep the two complementary strands from coming back together ...
... holds the two complementary strands together • Topoisomerase – reduces the over twisting that happens when helicase unzips DNA. • Single Stranded Binding Proteins (SSBP) – act as a “door stop” to keep the two complementary strands from coming back together ...
DNA structure and replication_AP Bio
... proteins carries out DNA replication • It takes E. coli less than an hour to copy each of the 5 million base pairs in its single chromosome and divide to form two identical daughter cells. • A human cell can copy its 6 billion base pairs and divide into daughter cells in only a few ...
... proteins carries out DNA replication • It takes E. coli less than an hour to copy each of the 5 million base pairs in its single chromosome and divide to form two identical daughter cells. • A human cell can copy its 6 billion base pairs and divide into daughter cells in only a few ...
TEST DNA stuff 2012 Multiple Choice
... What is responsible for the conservation of the base sequence during DNA replication? A. ...
... What is responsible for the conservation of the base sequence during DNA replication? A. ...
Biology 20 DNA Replication What do the initials DNA stand for
... Before DNA polymerase can begin work on the daughter strands, a primer must be laid first. Which enzyme produces the primer? What type of molecule is the primer? Synthesis of the new DNA strands: Once the RNA primers are in place, DNA polymerase can go to work. DNA polymerase catalyses the synthesis ...
... Before DNA polymerase can begin work on the daughter strands, a primer must be laid first. Which enzyme produces the primer? What type of molecule is the primer? Synthesis of the new DNA strands: Once the RNA primers are in place, DNA polymerase can go to work. DNA polymerase catalyses the synthesis ...
Ch. 12.2: Replication of DNA
... Replication of DNA • Before a cell can divide by mitosis or meiosis, it must first make a copy of its chromosomes. • The DNA in the chromosomes is copied in a process called DNA replication. • Without DNA replication, new cells would have only half the DNA of their parents. • DNA is copied during in ...
... Replication of DNA • Before a cell can divide by mitosis or meiosis, it must first make a copy of its chromosomes. • The DNA in the chromosomes is copied in a process called DNA replication. • Without DNA replication, new cells would have only half the DNA of their parents. • DNA is copied during in ...
Document
... mechanism that regulates replication. One might expect that such a strain would have more copies of the bacterial chromosome per cell compared to a normal strain. C20. The picture would depict a ring of helicase proteins traveling along a DNA strand and breaking the hydrogen bonding between the two ...
... mechanism that regulates replication. One might expect that such a strain would have more copies of the bacterial chromosome per cell compared to a normal strain. C20. The picture would depict a ring of helicase proteins traveling along a DNA strand and breaking the hydrogen bonding between the two ...
Chromosomes - WordPress.com
... therefore the few plasmids that transform at high efficiency must possess a sequence within the inserted yeast fragment that confers the ability to replicate extrachromosomally at high efficiency - that is an autonomously replicating sequence (ARS) element. ...
... therefore the few plasmids that transform at high efficiency must possess a sequence within the inserted yeast fragment that confers the ability to replicate extrachromosomally at high efficiency - that is an autonomously replicating sequence (ARS) element. ...
DNA - Images
... always be lagging behind.) • This side of the fork has to wait for a long segment of DNA to become exposed first before we can start by adding a primer. • When a long segment has been “opened” by Helicase, a RNA Primer (disposable) will attach and then DNA Polymerase III will work ...
... always be lagging behind.) • This side of the fork has to wait for a long segment of DNA to become exposed first before we can start by adding a primer. • When a long segment has been “opened” by Helicase, a RNA Primer (disposable) will attach and then DNA Polymerase III will work ...
DNA Replication and Telomere Maintenance
... • Sometimes DNA polymerase collides with RNA polymerase and is stalled. • In both cases, replication can be jumpstarted on the leading strand by formation of a new primer at the replication fork. ...
... • Sometimes DNA polymerase collides with RNA polymerase and is stalled. • In both cases, replication can be jumpstarted on the leading strand by formation of a new primer at the replication fork. ...
DNA Structure and replication notes
... Each of the original strands of the unzipped DNA serves as a template (a guide) for building a new strand. (The new strand is also called a complementary strand since it is made of complementary nucleotides(an A for a T, a G for a C) The enzyme DNA polymerase attaches to the template strand of DNA ( ...
... Each of the original strands of the unzipped DNA serves as a template (a guide) for building a new strand. (The new strand is also called a complementary strand since it is made of complementary nucleotides(an A for a T, a G for a C) The enzyme DNA polymerase attaches to the template strand of DNA ( ...
Replication/mutation
... How does the DNA structure allow a DNA molecule to be copied to make another identical molecule? Figure 11.13 • 1. Notice that the pairing that takes place between nitrogen bases is specific in DNA strands. This bonding pattern is called complementary base pairing. – Adenine (large base) always pai ...
... How does the DNA structure allow a DNA molecule to be copied to make another identical molecule? Figure 11.13 • 1. Notice that the pairing that takes place between nitrogen bases is specific in DNA strands. This bonding pattern is called complementary base pairing. – Adenine (large base) always pai ...
DNA/RNA/Protein Synthesis Pre-Test
... 2. __Sugar/Phosphate_____ This molecule makes up the sides of the ladder along with phosphate. 3. __Codon__________ These are a 3-base code for amino acids. 4. __Shape______ You align your chromosomes in a Karyotype according to size and ? 5. __Translation_Name the process in which amino acids are a ...
... 2. __Sugar/Phosphate_____ This molecule makes up the sides of the ladder along with phosphate. 3. __Codon__________ These are a 3-base code for amino acids. 4. __Shape______ You align your chromosomes in a Karyotype according to size and ? 5. __Translation_Name the process in which amino acids are a ...
CfE Higher Biology
... Formation of the Lagging strand • Because DNA polymerase can only add nucleotides from the 3’ end that leaves the 5’ end exposed. • The enzyme LIGASE is able to add nucleotides in this direction. • This strand is called the lagging strand and its formation known as discontinuous. • After both stran ...
... Formation of the Lagging strand • Because DNA polymerase can only add nucleotides from the 3’ end that leaves the 5’ end exposed. • The enzyme LIGASE is able to add nucleotides in this direction. • This strand is called the lagging strand and its formation known as discontinuous. • After both stran ...
AP Biology - HPHSAPBIO
... 7. Distinguish between the leading strand and the lagging strand. 8. Explain how the lagging strand is synthesized even though DNA polymerase can add nucleotides only to the 3' end. 9. Explain the roles of DNA ligase, primer, primase, helicase, and the single-strand binding protein. 10. Explain why ...
... 7. Distinguish between the leading strand and the lagging strand. 8. Explain how the lagging strand is synthesized even though DNA polymerase can add nucleotides only to the 3' end. 9. Explain the roles of DNA ligase, primer, primase, helicase, and the single-strand binding protein. 10. Explain why ...
Chromosomes - ISGROeducation
... Spacer regions include DNA that does not encode a protein product, and may function in spacing genes apart so that enzymes or other molecules can interact easily with them. ...
... Spacer regions include DNA that does not encode a protein product, and may function in spacing genes apart so that enzymes or other molecules can interact easily with them. ...
DNA Introduction Questions
... In the following diagrams, label each nucleotide with its correct name. Color the deoxyribose sugar blue. Color the purine rings yellow. Color the pyrimidine rings ...
... In the following diagrams, label each nucleotide with its correct name. Color the deoxyribose sugar blue. Color the purine rings yellow. Color the pyrimidine rings ...
作业习题
... resumption. Please explain how they act? 4. (10pts) Homologous recombination and non-homologous end joining (NHEJ) are two dominant pathways of Double strand breakage repair, and thought to be used in different phases in a cell cycle. Please tell us the detailed stories about these two pathways? 5. ...
... resumption. Please explain how they act? 4. (10pts) Homologous recombination and non-homologous end joining (NHEJ) are two dominant pathways of Double strand breakage repair, and thought to be used in different phases in a cell cycle. Please tell us the detailed stories about these two pathways? 5. ...
Chapter 12-1: DNA - SandersBiologyStuff
... and wire. When they saw Franklin’s pictures they soon were able piece all the information together to come up with the 3dimensional structure of DNA: a ______________ with two strands winding around each other. DNA and chromosomes DNA molecules are extremely long. In order to fit into cells, they mu ...
... and wire. When they saw Franklin’s pictures they soon were able piece all the information together to come up with the 3dimensional structure of DNA: a ______________ with two strands winding around each other. DNA and chromosomes DNA molecules are extremely long. In order to fit into cells, they mu ...
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.