STEP 1: "Build" the mRNA molecule, matching the RNA nucleotides to the DNA nucleotides properly, letter by letter. (For purposes of simplicity, it will be assumed that this mRNA is bacterial; there are no introns to cut out!) STEP 2: Figure out the tRNA triplets (codons) that would fit the mRNA triplets (letter by letter). STEP 3: Look up each tRNA codon in the tRNA Dictionary (below), and find the corresponding symbol and amino acid abbreviation for that codon. Record that one-letter symbol (and its amino acid) below each codon. "Spc" = "space". If you have done this correctly, the symbols should spell out a meaningful message in English. Remember, C always pairs with G, G always pairs with C, A pairs with T or T pairs with A (in DNA). In RNA, C always pairs with G, G always pairs with C, A pairs with U or U pairs with A. Clues: C & G are curved letters; A & T are angular; U is used in RNA in place of T. When you finish the sample message below, decode the special message assigned to you (from the DNA Messages 1-30). Be sure to show the details of your solution on the student answer sheet provided, and hand it in. Be sure to show the details of your solution on the Practice Sheet provided, and hand it in. In your DNA exam, you will be expected to do this from memory (provided with the tRNA Dictionary). PARTIALLY SOLVED MESSAGE GIVEN: DNA code message--> GAA TAG AAA CTT ACT TAG AGC ATT CCT GCC CTT CGA TGC ATC SOLUTION (steps 1-4) 1. mRNA (built to match

Human Anatomy & Physiology (11th Edition)
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Author:Elaine N. Marieb, Katja N. Hoehn
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SAY IT WITH DNA: PROTEIN SYNTHESIS WORKSHEET: Practice Pays
Student Handout
Having studied the process by which DNA directs the synthesis of proteins, you should be ready to decode
some DNA "secret" messages. To do this, you must follow the procedure of protein synthesis as this is taking place
right now in your cells; no short cuts! Practice these steps by following and finishing the partially solved message
below.
STEP 1: "Build" the mRNA molecule, matching the RNA nucleotides to the DNA nucleotides properly, letter by
letter. (For purposes of simplicity, it will be assumed that this mRNA is bacterial; there are no introns to cut out!)
STEP 2: Figure out the tRNA triplets (codons) that would fit the mRNA triplets (letter by letter).
STEP 3: Look up each tRNA codon in the tRNA Dictionary (below), and find the corresponding symbol and amino
acid abbreviation for that codon. Record that one-letter symbol (and its amino acid) below each codon. "Spc" =
"space". If you have done this correctly, the symbols should spell out a meaningful message in English.
Remember, C always pairs with G, G always pairs with C, A pairs with T or T pairs with A (in DNA). In
RNA, C always pairs with G, G always pairs with C, A pairs with U or U pairs with A. Clues: C & G are curved
letters; A & T are angular; U is used in RNA in place of T.
When you finish the sample message below, decode the special message assigned to you (from the DNA
Messages 1-30). Be sure to show the details of your solution on the student answer sheet provided, and hand it in.
Be sure to show the details of your solution on the Practice Sheet provided, and hand it in. In your DNA
exam, you will be expected to do this from memory (provided with the tRNA Dictionary).
PARTIALLY SOLVED MESSAGE
GIVEN: DNA code message--> GAA TAG AAA CTT ACT TAG AGC ATT CCT GCC CTT CGA TGC ATC
SOLUTION (steps 1-4)
1. mRNA (built to match
the DNA message,
letter for letter--------
2. tRNA (determined by
matching letters (bases)
with those in mRNA)
3. Amino acids carried by
each tRNA (according to
dictionary, below)-----------→
CUU AUC UUU GAA UGA AUC UCG
GAA UAG AAA CUU ACU UAG ...
L I P G
I
e
h 1
S
0 e
u
U
tRNA sym AA
AAA F Phe
AAC L Leu
AAG F Phe
AAU L Leu
ACA с Cys
ACC W Trp
ACG C Cys
ACU
spe
AGA S Ser
AGC S Ser
AGG S Ser
AGU S Ser
AUA Y Tyr
AUC
spe
AUG Y
AUU
Tyr
spe
S
0
4. Symbols of amino acids:-->
LIFE - I I.
DICTIONARY OF tRNA CODONS & THEIR AMINO ACIDS (SYMBOLS & ABBREVIATIONS)
tRNA sym AA
CAA V Val
CAC V Val
CAG V Val
CAU V Val
CCA G Gly
CCC G Gly
CCG G Gly
CCU G Gly
CGA A Ala
CGC A Ala
CGG A Ala
CGU A Ala
CUA D Asp
CUC E Glu
CUG D Asp
CUU E Glu
...
tRNA sym AA
GAA L Leu
GAC L Leu
GAG L Leu
GAU L Leu
GCA R Arg
GCC R Arg
GCG R Arg
GCU R Arg
GGA
P Pro
GGC P Pro
GGG P Pro
GGU P Pro
GUA H His
GUC Q Glu
GUG H His
GUU Q Glu
tRNA sym AA
UAA I Iso
UAC M Met
UAG 1 Iso
UAU 1 Iso
UCA S Ser
UCC R
UCG S
UCU R
UGA T
UGC T
UGG T
UGU T
UUA N
UUC K
UUG N
UUU K
Arg
Ser
Arg
Thr
Thr
Thr
Thr
Asn
Lys
Asn
Lys
Transcribed Image Text:SAY IT WITH DNA: PROTEIN SYNTHESIS WORKSHEET: Practice Pays Student Handout Having studied the process by which DNA directs the synthesis of proteins, you should be ready to decode some DNA "secret" messages. To do this, you must follow the procedure of protein synthesis as this is taking place right now in your cells; no short cuts! Practice these steps by following and finishing the partially solved message below. STEP 1: "Build" the mRNA molecule, matching the RNA nucleotides to the DNA nucleotides properly, letter by letter. (For purposes of simplicity, it will be assumed that this mRNA is bacterial; there are no introns to cut out!) STEP 2: Figure out the tRNA triplets (codons) that would fit the mRNA triplets (letter by letter). STEP 3: Look up each tRNA codon in the tRNA Dictionary (below), and find the corresponding symbol and amino acid abbreviation for that codon. Record that one-letter symbol (and its amino acid) below each codon. "Spc" = "space". If you have done this correctly, the symbols should spell out a meaningful message in English. Remember, C always pairs with G, G always pairs with C, A pairs with T or T pairs with A (in DNA). In RNA, C always pairs with G, G always pairs with C, A pairs with U or U pairs with A. Clues: C & G are curved letters; A & T are angular; U is used in RNA in place of T. When you finish the sample message below, decode the special message assigned to you (from the DNA Messages 1-30). Be sure to show the details of your solution on the student answer sheet provided, and hand it in. Be sure to show the details of your solution on the Practice Sheet provided, and hand it in. In your DNA exam, you will be expected to do this from memory (provided with the tRNA Dictionary). PARTIALLY SOLVED MESSAGE GIVEN: DNA code message--> GAA TAG AAA CTT ACT TAG AGC ATT CCT GCC CTT CGA TGC ATC SOLUTION (steps 1-4) 1. mRNA (built to match the DNA message, letter for letter-------- 2. tRNA (determined by matching letters (bases) with those in mRNA) 3. Amino acids carried by each tRNA (according to dictionary, below)-----------→ CUU AUC UUU GAA UGA AUC UCG GAA UAG AAA CUU ACU UAG ... L I P G I e h 1 S 0 e u U tRNA sym AA AAA F Phe AAC L Leu AAG F Phe AAU L Leu ACA с Cys ACC W Trp ACG C Cys ACU spe AGA S Ser AGC S Ser AGG S Ser AGU S Ser AUA Y Tyr AUC spe AUG Y AUU Tyr spe S 0 4. Symbols of amino acids:--> LIFE - I I. DICTIONARY OF tRNA CODONS & THEIR AMINO ACIDS (SYMBOLS & ABBREVIATIONS) tRNA sym AA CAA V Val CAC V Val CAG V Val CAU V Val CCA G Gly CCC G Gly CCG G Gly CCU G Gly CGA A Ala CGC A Ala CGG A Ala CGU A Ala CUA D Asp CUC E Glu CUG D Asp CUU E Glu ... tRNA sym AA GAA L Leu GAC L Leu GAG L Leu GAU L Leu GCA R Arg GCC R Arg GCG R Arg GCU R Arg GGA P Pro GGC P Pro GGG P Pro GGU P Pro GUA H His GUC Q Glu GUG H His GUU Q Glu tRNA sym AA UAA I Iso UAC M Met UAG 1 Iso UAU 1 Iso UCA S Ser UCC R UCG S UCU R UGA T UGC T UGG T UGU T UUA N UUC K UUG N UUU K Arg Ser Arg Thr Thr Thr Thr Asn Lys Asn Lys
CREATING A DNA MESSAGE
Practice DNA message:
mRNA:
tRNA:
AMINO ACID SEQUENCE (three-letter abbreviations are okay):
Decoded Message (English word or words):
Transcribed Image Text:CREATING A DNA MESSAGE Practice DNA message: mRNA: tRNA: AMINO ACID SEQUENCE (three-letter abbreviations are okay): Decoded Message (English word or words):
Expert Solution
Step 1

We are given a partially solved  message where DNA segment is given and we have to wrire the mRNA sequence, tRNA and amino acids.

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