Flashcards
Study Module 16- BIO
Flashcards do conjunto (14)
- 1In bacterial DNA replication of the lagging strand, __________ is required for the synthesis of a new DNA strand whereas __________ is required for removing the RNA primer and replacing it with DNA nucleotides.DNA pol III; DNA pol I
- 2Replication of the lagging strand of DNA is accomplished by repeatedly making __________ followed by 1,000–2,000 nucleotide segments called __________.short RNA primers; Okazaki fragments
- 3DNA polymerase adds nucleotides to the __________ of the leading strands, and to the __________ of the lagging strands (Okazaki fragments).3'; 3'
- 4Of the three alternative models of DNA replication, which are the __________ models, the one that explains how DNA replicates is the __________ model.conservative, semiconservative, and dispersive; semiconservative
- 5When __________ form after an exposure to ultraviolet (UV) light, a __________ can remove the damaged nucleotides and replace them with normal nucleotides.thymine dimmers; nucleotide excision repair enzyme
- 6In DNA replication, the next nucleotide is incorporated into the growing polymer at the __________ of the molecule by an enzyme called __________.3' (hydroxyl) end; DNA polymerase
- 7What is the 3' end and what is the 5' end.3' is hydroxyl, 5' is phosphate
- 8In DNA, the two purines are __________, and the two pyrimidines are __________.adenine and guanine; cytosine and thymine
- 9What describes DNA replication?Helicases seperate the 2 strands of double helix, then those strands are copied by the 2 original strands that are used as templates.
- 10The role of DNA polymerases in DNA replication is to __________.attach free nucleotides to the new DNA strand
- 11Telomeres are __________.repeating noncoding sequences at the end of linear eukaryotic chromosomes
- 12NA replication begins at a site called the origin of replication, forming a bubble, which is followed by a __________, where parental strands are unwound by __________.replication fork; helicases
- 13A virus that infects bacteria is called a __________, which is made up of the macromolecules __________ and __________.bacteriophage; DNA; protein
- 14The information in DNA is contained in __________.the sequence of nucleotides along the length of the two strands of the DNA molecule
Informações
- Descrição
- Freshman in College BIO 120 FlashCards sobre Study Module 16- BIO, criado por paulinemansour em 22-11-2014.
- Criado por
- paulinemansour
- Visualizações
- 1.418
- Avaliação