MICR 2123 Exam 2 Questions with All Answers Revised and Updated
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Course
MICR 2123
Institution
MICR 2123
MICR 2123 Exam 2 Questions with All Answers Revised and Updated
Helicase - Answer-An enzyme in DNA replication that "unzips" the two strand by breaking the H bonds.
Primase - Answer-An enzyme in DNA replication that lays down a short stretch of complementary RNA.
DNA Polymerase - Answer-...
MICR 2123 Exam 2 Questions with All
Answers Revised and Updated
Helicase - Answer-An enzyme in DNA replication that "unzips" the two strand by
breaking the H bonds.
Primase - Answer-An enzyme in DNA replication that lays down a short stretch of
complementary RNA.
DNA Polymerase - Answer-The star enzyme of DNA replication. Adds the nucleotides to
the grown chain, using information from the original strand.
Rnase H - Answer-An enzyme in DNA replication that removes the RNA primers.
Ligase - Answer-An enzyme in DNA replication that repairs all the nicks.
Transcription - Answer-Making mRNA from DNA template. A specific piece of the
genome is transcribed.
RNA - Answer-Made up of nucleotides. Has a ribose sugar, a phosphate group, and
nitrogenous bases A to U, and C to G. Also single stranded.
Initiation of Transcription - Answer-Sigma Factor binds to gene promoter.
Elongation of Transcription - Answer-Transcription Bubble. Actual copying happens by
adding ribonucleotides based on the DNA template strand.
Termination of Transcription - Answer-RNA polymerase detaches from the DNA. Can
be Rho-dependent (Protein called Rho halts transcription) or Rho-independent (GC-
loops tell RNA polymerase to stop).
RNA Polymerase - Answer-The star enzyme of transcription. Made up of a core enzyme
(does the actual nucleotide attaching) and a sigma factor (binds to promoter region to
know where to start).
Transcription and Translation - Answer-Coupled in prokaryotes. Translation starts
before transcription ends.
Translation - Answer-Making proteins from mRNA.
Requirements of Translation - Answer-1) mRNA to carry the code 2) Ribosomes to
come together and form 3 pockets 3) tRNA that carry the amino acids
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