Bio 340 exam 2 Review Questions and Answers.

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Bio 340 exam 2 Review Questions and Answers |
2026 Updated | 100% Correct|| GRADED a+\\
PASS!!

Central Dogma - ANSWER-DNA → RNA → Protein
Transcription - ANSWER-Process of making RNA from DNA
Template Strand - ANSWER-DNA strand used to make RNA
RNA Polymerase - ANSWER-Enzyme that synthesizes RNA
Direction of Transcription - ANSWER-RNA is made 5' → 3'
Difference from DNA Replication - ANSWER-No primer, one strand copied, higher error
rate
mRNA - ANSWER-Carries genetic info to ribosome
tRNA - ANSWER-Brings amino acids to ribosome
rRNA - ANSWER-Forms ribosome structure and catalyzes reactions
5' Cap - ANSWER-Protects mRNA and helps with translation initiation
Poly-A Tail - ANSWER-Stabilizes mRNA and helps export from nucleus
RNA Splicing - ANSWER-Removes introns and joins exons
Spliceosome - ANSWER-Complex that carries out splicing
GU-AG Rule - ANSWER-Introns start with GU and end with AG
Alternative Splicing - ANSWER-One gene → multiple proteins
Translation - ANSWER-Process of making protein from mRNA
Codon - ANSWER-3-base sequence coding for amino acid
Start Codon - ANSWER-AUG (codes for methionine)
Stop Codons - ANSWER-Signal end of translation
Ribosome A Site - ANSWER-Incoming tRNA binds
Ribosome P Site - ANSWER-Holds growing polypeptide
Ribosome E Site - ANSWER-Exit site for tRNA

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Study: A level Biology
Uploaded on: April 8, 2026
Number of pages: 2
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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