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AP Biology: Unit 6 exam; Questions & Answers Latest Update 100% Solved

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AP Biology: Unit 6 exam; Questions & Answers Latest Update 100% Solved What is the structure of DNA? Correct answer-Molecules called nucleotides, each nucleotide has a phosphate group, sugar group, and a nitrogen base. Its made up of 2 strands forming a double helix Role of Alfred Hershey ...

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  • August 8, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • ap biology unit 6 exam
  • questions answers latest update 100 solved

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  • AP Biology
  • AP Biology

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AP Biology: Unit 6 exam; Questions & Answers Latest
Update 100% Solved
What is the structure of DNA? Correct answer-Molecules called nucleotides, each
nucleotide has a phosphate group, sugar group, and a nitrogen base. Its made up of 2 strands
forming a double helix




Role of Alfred Hershey and Martha Chase in discovering the structure of DNA Correct
answer--Alfred Hershey and Martha chase performed experiments showing that DNA is the
genetic material of a phage known as T2

-They designed an experiment showing only 2 components of T2 (DNA or protein) enters an
E.coli cell during infection.

-They concluded that the injected DNA of the phage provides genetic information




Steps of DNA replication Correct answer--Initiation

-Elongation

-Termination




Initiation Correct answer-Proteins bind to origin of replication while helicase unwinds the
DNA helix and two replication forks formed at the origin of replication.




Elongation Correct answer-Primer sequence is added with complementary RNA
nucleotides which are replaced by DNA nucleotides




Termination Correct answer-Occurs when converging replication forks meet on opposite
ends of parental chromosome.

, AP Biology: Unit 6 exam; Questions & Answers Latest
Update 100% Solved

Replication Correct answer-making of DNA from an existing DNA strand




Transcription Correct answer-Synthesis of RNA under the direction of DNA (making a
copy of a gene)




Translation Correct answer-Synthesis of a polypeptide using info in the mRNA (making
the gene a protein)




Gene Expression Correct answer-The process by which DNA directs protein synthesis
includes two stages; transcription and translation




How do mutations change the amino acid sequence of a protein? Correct answer-The
change of a single nucleotide in a single a DNA template strand can lead to the production of an
abnormal protein.




How do eukaryotic cells modify RNA after transcription? Correct answer--enzymes in the
eukaryotic nucleus modify pre mRNA (RNA processing) before the genetic messages are
dispatching to the cytoplasm.

-During RNA processing, both ends of the primary transcript are altered




5 end and 3 end Correct answer--5 end gets a modified nucleotide 5cap

- 3 end gets a Poly-A-tail

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