Umd bsci 330 - Study guides, Class notes & Summaries
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UMD BSCI 330 exam 2 Questions and Answers with complete solution
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How does translation terminate? - ️️-stop codon (UAA, UAG,UGA) 
-instead of tRNA, release factor binds to ribosome, causing hydrolysis of the peptidyl 
tRNA, releasing the completed protein 
-ribosome dissociates into its subunits, releasing mRNA, release factor, and tRNA 
mRNA and protein synthesis are very energetically - ️️adding each subunit requires 
the conversion of an NTP to an NMP, equivalent to hydrolyzing 2 ATPS to ADP 
-elongation step consume multiple ATP/GTP 
-splicing and ...
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UMD BSCI 330 exam 2 (100% correct and graded A+)
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the structure of secondary protein is dependent on? - ️️weak H-bonds b/t C=O & NH in backbone 
- NOT SIDE CHAINS 
the structure of beta sheet's is dependent on? - ️️H-bonding is between C=O & N-H 
on ADJACENT polypeptide chains 
with proteins, structure = - ️️function 
describe the structure of primary proteins - ️️-linear sequence of amino acid residue 
-determines mRNA structure 
the structure of primary amino acids is dependent on? - ️️covalent binds b/t amino 
acids in...
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UMD BSCI 330 exam 1 Questions With Answers Graded A+ Assured Success
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in condensation reactions, removing H2O ____. While adding H2O ____ - ️️in 
condensation reactions, removing H2O forms molecules. While adding H2O breaks 
down molecules. 
describe chemical feature(s) of amino acids - ️️uniform chemical structure w/ 
directionality 
- amino terminus 
-carboyl terminus 
-R group 
what is the difference between seeing and visualizing? - ️️seeing- can detect 
visualizing- seeing shapes, structures, measuring 
Given the following building blocks ==> s...
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UMD BSCI 330 Exam 2 (Part I) Questions and Answers with complete solution
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What are elongation factors? (transcription) - ️️use ATP hydrolysis to help RNA 
poly. move along chromatin 
-make sure RNA isnt falling off DNA/ skipping nucleotides 
Differences between eukaryotic and prokaryotic transcription - ️️- Euk: Have 3 
different RNA polymerases. Pro: only one 
- Starting --- Euk: Needs general transcription factors to start transcription and position 
RNA polymerase. Pro: RNA polymerase binds to promoter sequence immediately. 
- Stopping --- Euk: Polyadenylat...
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BSCI 330 UMD Exam 2 (Questions & Answers) Rated 100% Correct!!
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Information in DNA - ️️same as mRNA, transcription termination and initiation 
information, splicing information 
catalytic domain - ️️protein domain in enzyme-linked receptors, activated by a 
conformational change induced by the ligand-binding domain, inhibits host cell protein 
synthesis and interacts with substrate to cause enzyme reaction 
tRNA - ️️An RNA molecule that functions as an interpreter between nucleic acid 
and protein language by picking up specific amino acids and r...
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