Sticky ends are single stranded DNA overhangs that: O stabilize DNA from nucleases O form primers during transcription O are recognized by the RNA polymerase during transcription O provide complementary hydrogen bonding for ligation are recognized by the DNA polymerase during replication

Sticky ends are single stranded DNA overhangs that: O stabilize DNA from nucleases O form primers during transcription O are recognized by the RNA polymerase during transcription O provide complementary hydrogen bonding for ligation are recognized by the DNA polymerase during replication

Biology Today and Tomorrow without Physiology (MindTap Course List)

5th Edition

ISBN:9781305117396

Author:Cecie Starr, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Christine Evers, Lisa Starr

Chapter6: Dna Structure And Function

Section: Chapter Questions

Problem 9SQ

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What is the function of DNA polymerase? a. It degrades DNA in cells. b. It adds RNA nucleotides to a new strand. c. It coils DNA around histones to form chromosomes. d. It adds DNA nucleotides to a replicating strand. e. None of these.
DNA replication requires ________ . a. DNA polymerase c. primers b. nucleotides d. all are required
Energy that drives the attachment of a nucleotide to the end of a growing strand of DNA comes from ________. a. the nucleotide b. DNA polymerase c. phosphate-group transfers from ATP
How does DNA replication occur in a precise manner to ensure that identical genetic information is put into the new chromatid? See Figures 8.12 and 8.13. FIGURE 8.12 In DNA replication, the two polynucleotide strands uncoil, and each is a template for synthesizing a new strand. A replicated DNA molecule contains one new strand and one old strand. This mechanism is called semiconservative replication. FIGURE 8.13 A close-up look at the process of DNA replication. (a) As the strands uncoil, bases are added to the newly synthesized strand by complementary base pairing with bases in the template strand. The new bases are linked together by DNA polymerase. (b) DNA synthesis can proceed only in the 5 3 direction; newly synthesized DNA on one template strand is made in short segments and linked together by the enzyme DNA ligase.
The initial mechanism for repairing nucleotide errors in DNA is _____. a. mismatch repair b. DNA polymerase proofreading c. nucleotide excision repair d. thymine dimers
mRNA is produced by ___________. a. replication b. duplication c. transcription d. translation
The following segment of DNA codes for a protein. The uppercase letters represent exons. The lowercase letters represent introns. The lower strand is the template strand. Draw the primary transcript and the mRNA resulting from this DNA.
Match the terms appropriately. ___ nucleotide ___ clone a. nitrogen-containing base, sugar, phosphate groups ___ autosome b. copy of an organism ___ DNA polymerase c. does not determine sex ___ mutation d. injects DNA ___ bacteriophage e. replication enzyme ___ semiconservative replication f. can cause cancer g. something old, something new ___ DNA ligase h. seals gaps and breaks
Cloning Genes Is a Multistep Process Which enzyme is responsible for covalently linking DNA strands together? a. DNA polymerase b. DNA ligase c. EcoRl d. restriction enzymes e. RNA polymerase
Energy that drives the attachment of a nucleotide to the end of a growing strand of DNA comes from ______. a. phosphate-group transfers from ATP b. DNA polymerase c. the nucleotide itself d. a and c
Eukaryotic mRNA: usessnRNPs to cut out introns and seal together translatableexons. uses a spliceosome mechanism made of DNA to recognizeconsensus sequences to cut and splice. has a guanine cap on its 39 end and a poly(A) tail on its 59 end. is composed of adenine, thymine, guanine, and cytosine. codes the guanine cap and poly(A) tail from the DNAtemplate.
For each species, all ________ in the complete set of chromosomes is the ________. a. genomes; library b. DNA; genome c. mRNA; start of cDNA d. cDNA; start of mRNA