Exam 6

DNA replication makes a(n)___ copy of the DNA strand, while transcription makes a(n) ____ Copy of the DNA strand

• mRNA;DNA

• mRNA; rRNA

• DNA;tRNA

• DNA;mRNA

If an organism's DNA contains 20% adenine nucleotides, what percentage of its DNA is composed of thymine nucleotides?

• 30%

• 20%

• 15%

• 40%

In eurkaryotes, mRNA processing and splicing may involve all of the following except

• removal of exons from the mRNA

• addition of 3' poly-A-tail

• addition of 5' cap.

• mRNA splicing by the spliceosome

What chemical force must be overcome in order to separate the two DNA strands during replication?

• hydrophobic interactions

• intrastrand folding

• hydrogen bonds

• phosphodiester bonds

DNA is constructed of

• a single stand of nucleotides with internal hydrogen bonding.

• two stands of nucleotides running in antiparallel configuration.

• two complementary strands of nucleotides bonded A-C and G-T

• two strands of identical nucleotides in a parallel configuration with hydrogen bonds between them.

If an organism's DNA contains 17% adenine nucleotides and 33% guanine, what percentage of its DNA is composed of cytosine nucleotides?

• 8.5%

• 25%

• 17%

• 50%

• 33%

For a DNA strand that contains the sequence 5' AGT 3' direction, what nucleotides are found on the other DNA strand in the 5' to 3' direction

• ACT

• GTA

• TGA

• AGT

mRNA must be processed in the cytoplasm before being used in protein synthesis.

• True

• False

Which of the following processes does not occur within the nucleus?

• primary mRNA splicing

• intron removal

• DNA replication

• translation

• Transcription

The sequence of the mRNA that would result from transcribing the gene pictured would be??

• UAAUCGCAU

• ATGCGATTA

• AUUAGCGUA

• AUGCGAUUA