BIMM 100 Quiz 4 well answered
already passed
Because they both produce a reverse transcriptase, long interspersed nuclear elements (LINEs)
as transposable elements may be related to _____. - correct answer ✔✔ Retroviruses
Although transposable elements and short tandem repeats (STRs) are repetitive DNAs, they
differ in that _____. - correct answer ✔✔ the repeated unit in STRs is clustered one after
another; transposable element repeats are scattered throughout the genome
A linear strand of DNA is 1,000 bp long. A recognition sequence for the restriction enzyme Eco
R1 is located 300 base pairs (bp) from the 5' end of this linear DNA molecule. Digesting this DNA
molecule with Eco RI would produce ________. - correct answer ✔✔ Two fragments: one 300
bp long and another 700bp long
Approximately how many genes are present in the human genome? - correct answer ✔✔
20,000
What is the most logical sequence of steps for splicing foreign DNA into a plasmid and inserting
the plasmid into a bacterium?
I. Transform bacteria with a recombinant DNA molecule.
II. Cut the plasmid DNA using restriction enzymes (endonucleases).
III. Extract plasmid DNA from bacterial cells.
IV. Hydrogen-bond the plasmid DNA to nonplasmid DNA fragments.
V. Use ligase to seal plasmid DNA to nonplasmid DNA. - correct answer ✔✔ III, II, IV, V, I
A ________ consists of cloned DNA fragments for all transcribed genes in a particular tissue. -
correct answer ✔✔ cDNA
already passed
Because they both produce a reverse transcriptase, long interspersed nuclear elements (LINEs)
as transposable elements may be related to _____. - correct answer ✔✔ Retroviruses
Although transposable elements and short tandem repeats (STRs) are repetitive DNAs, they
differ in that _____. - correct answer ✔✔ the repeated unit in STRs is clustered one after
another; transposable element repeats are scattered throughout the genome
A linear strand of DNA is 1,000 bp long. A recognition sequence for the restriction enzyme Eco
R1 is located 300 base pairs (bp) from the 5' end of this linear DNA molecule. Digesting this DNA
molecule with Eco RI would produce ________. - correct answer ✔✔ Two fragments: one 300
bp long and another 700bp long
Approximately how many genes are present in the human genome? - correct answer ✔✔
20,000
What is the most logical sequence of steps for splicing foreign DNA into a plasmid and inserting
the plasmid into a bacterium?
I. Transform bacteria with a recombinant DNA molecule.
II. Cut the plasmid DNA using restriction enzymes (endonucleases).
III. Extract plasmid DNA from bacterial cells.
IV. Hydrogen-bond the plasmid DNA to nonplasmid DNA fragments.
V. Use ligase to seal plasmid DNA to nonplasmid DNA. - correct answer ✔✔ III, II, IV, V, I
A ________ consists of cloned DNA fragments for all transcribed genes in a particular tissue. -
correct answer ✔✔ cDNA
