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JMU Microbiology Exam 3 Correct Answers Latest Version
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JMU Microbiology Exam 3 Correct Answers Latest Version
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JMU Microbiology Exam 3 Correct AnswersLatest Version
Two essential functions for DNA Answer: - responsible got inheritance
-direct and regulate photosynthesis
Transcription Answer: info from DNA is transferred to RNA(mRNA)
Translation Answer: info from mRNA is used to build polypeptides(proteins)
Genotype Answer: the genetic makeup of an organism
Phenotype Answer: expression of the genes, set of observable characteristics
DNA replication is... Answer: semiconservative
How many origins of replication do prokaryotes have Answer: one
describe origin of replication in prokaryotes: Answer: rich in AT sequences; ~245 bp
Helicase (_______) the strands Answer: unwinds
Helicase breaks the ____ bonds between strands Answer: hydrogen
, Replication forks are Answer: bidirectional
replication forks are coated with Answer: single strand binding proteins to prevent ssDNA from
rewinding into dsDNA
in bacterial DNA replication; what dna polymerase starts adding nucleotides Answer: III
DNA replication happens in what direction Answer: 5' to 3'
RNA primer initiates Answer: dna replication initiation in bacteria
DNA polymerase can only add nucleotides to the 3' OH which is provided by Answer: RNA primer
how is the RNA primer made Answer: synthesized by RNA primase
RNA primase Answer: does NOT need free 3' -OH and to synthesize an RNA molecule
What protein holds DNA polymerase III in place during bacterial elongation Answer: sliding clamp
leading strand is synthesized Answer: continuously
lagging strand is synthesized Answer: discontinuously creating Okazaki fragments
how many primers are needed for the lagging strand Answer: One for each Okazaki fragment
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