PDF Central Dogma Compare and contrast
Name Section 12.3 DNA, RNA, and Protein (continued)
Date
Main Idea
Central Dogma
I found this information
on page
.
SE, pp. 336?337
RE, pp. 134?135
Details
Compare and contrast RNA and DNA by writing at least five characteristics of their structure and composition in the Venn diagram. Accept all reasonable responses.
RNA
single strand; has ACUG for bases; uracil
Both
are nucleic acids;
have sugars, but dnifufcelereotnidteos,nAesC G
DNA
double strand; has ACTG for bases; thymine
binds with adenine has ribose
binds with adenine
leaves the nucleus through
has deoxyribose
the nuclear pores
must remain in the nucleus
"One gene makes one protein!"
State the central dogma of biology.
DNA
codes for
mRRNNA
amino acid chain
directs the proteins synthesis of polypeptide
enzymes
Compare the function of each type of RNA molecule by
completing the table.
Type of RNA
Function
mRNA
carry genetic icnofpoyrfmroamtitohenDfrNoAmintthhee nucleus to the
messenger cytoplasm to direct protein synthesis
rRNA ribosomal form part of the ribosome
tRNA transfer carry amino acids to the ribosome
Sequence the steps in transcription of RNA.
A portion of the DNA molecule unzips.
RNA polymerase joins RNA nucleotides using the DNA strand as a template.
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
The mRNA strand is released and the DNA strands rejoin.
The mRNA leaves the nucleus and enters the cytoplasm.
Molecular Genetics 125
Name Section 12.3 DNA, RNA, and Protein (continued)
Date
Main Idea
The Code, One Gene-- One Enzyme
I found this information
on page
.
SE, pp. 338?341
RE, pp. 135?138
Details
Identify four examples of codons and state the instructions they encode. 1. (GCU) alanine 2. (AAA) lysine 3. (AUG) methionine, tells the ribosome that this is the start of the
amino acid chain
4. (UAA) stop, tells ribosome that this is the end of the amino acid chain
Model the movement of tRNA molecules showing the translation process.
Diagrams should show tRNA molecules moving to a ribosome while carrying amino acids. As each amino acid bonds, the tRNA moves away to bring another amino acid.
Copyright ? Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
State the updated version of Beadle and Tatum's hypothesis.
One gene
codes for
one polypeptide
.
SUMMARIZE Create a flow chart to describe the formation of a protein. Describe the activities of DNA and the three types of RNA. Accept all reasonable
responses.
DNA issues instructions
messenger RNA brings instructions from DNA to the cytoplasm
ribosomal RNA binds to the mRNA
transfer RNA delivers amino acids to the ribosome to be made into a protein
the rRNA uses the instructions to assemble the amino acids in the right order
126 Molecular Genetics
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