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