1|Page
ASU MIC 205 PENTON EXAM 1 AND EXAM 2 NEWEST
ACTUAL EXAM COMPLETE QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||LATEST VERSION!!
DNA is made of - Answer-nucleotides
Uracil replaces what in RNA? - Answer-Thymine
Phosphodiester bond - Answer-the two backbones of DNA
DNAs structure is - Answer-double helix
Antiparallel - Answer-2 strands that run in opposite
directions, 5' to 3'
Complementary bases - Answer-A-T, G-C
Bacterial DNA's shape is always what and why? - Answer-
Circular and supercoiled in shape and it helps gene
transcription
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Plasmids (Conjugation) - Answer-pilus, horizontal gene
transfer, can integrate into the chromosome (homologous
recombination)
F+ - Answer-F plasmid
F- - Answer-no F plasmid
Steps of horizontal gene transfer (conjugation) - Answer-1.
F pilus extends and binds to F- cell wall
2. Cells are drawn together, protein corridor forms
between cells
3. DNase cuts plasmid DNA at target site, single strand
moves across corridor, F- cell synthesizes complementary
strand, F+ cell replaces transferred strand
4. Cells separate at completion of transfer and synthesis,
both are now F+ and can conjugate with other F- cells
Agrobacterium tumefaciens - Answer-- able to transfer
plasmids across kingdoms (to plants)
- nitrogen fixing bacteria (gas to ammonia NH3)
, 3|Page
- makes plant tumors that produce opines
(opines=supplies N and energy to the bacteria)
- these plasmids are endosymbionts of the bacteria and
"parasites" of the plant
- used for genetic engineering GMO crops and Ab
production
RNA - Answer-single stranded molecule
Ribosome - Answer-mixture of DNA and RNA, will form
complex structures
mRNA (messenger RNA) - Answer-- blueprint
- copy of information in DNA that is brought to the
ribosome where the information is translated into a protein
rRNA (ribosomal RNA) - Answer-- factory
- the protein factories of the cells
tRNA (trnasfer RNA) - Answer-- truck
- brings amino acid to the ribosome
ASU MIC 205 PENTON EXAM 1 AND EXAM 2 NEWEST
ACTUAL EXAM COMPLETE QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS)
|ALREADY GRADED A+||LATEST VERSION!!
DNA is made of - Answer-nucleotides
Uracil replaces what in RNA? - Answer-Thymine
Phosphodiester bond - Answer-the two backbones of DNA
DNAs structure is - Answer-double helix
Antiparallel - Answer-2 strands that run in opposite
directions, 5' to 3'
Complementary bases - Answer-A-T, G-C
Bacterial DNA's shape is always what and why? - Answer-
Circular and supercoiled in shape and it helps gene
transcription
,2|Page
Plasmids (Conjugation) - Answer-pilus, horizontal gene
transfer, can integrate into the chromosome (homologous
recombination)
F+ - Answer-F plasmid
F- - Answer-no F plasmid
Steps of horizontal gene transfer (conjugation) - Answer-1.
F pilus extends and binds to F- cell wall
2. Cells are drawn together, protein corridor forms
between cells
3. DNase cuts plasmid DNA at target site, single strand
moves across corridor, F- cell synthesizes complementary
strand, F+ cell replaces transferred strand
4. Cells separate at completion of transfer and synthesis,
both are now F+ and can conjugate with other F- cells
Agrobacterium tumefaciens - Answer-- able to transfer
plasmids across kingdoms (to plants)
- nitrogen fixing bacteria (gas to ammonia NH3)
, 3|Page
- makes plant tumors that produce opines
(opines=supplies N and energy to the bacteria)
- these plasmids are endosymbionts of the bacteria and
"parasites" of the plant
- used for genetic engineering GMO crops and Ab
production
RNA - Answer-single stranded molecule
Ribosome - Answer-mixture of DNA and RNA, will form
complex structures
mRNA (messenger RNA) - Answer-- blueprint
- copy of information in DNA that is brought to the
ribosome where the information is translated into a protein
rRNA (ribosomal RNA) - Answer-- factory
- the protein factories of the cells
tRNA (trnasfer RNA) - Answer-- truck
- brings amino acid to the ribosome
