Which of the following correctly describes a structural feature of DNA or RNA? a. RNA may fold into complex three-dimensional structures necessary for its activity b. RNA & DNA are both usually double stranded c. DNA tends to fold into complex three-dimensional structures required for its activity d. DNA contains a pentose sugar with a hydroxyl group in the 2' position

Which of the following correctly describes a structural feature of DNA or RNA? a. RNA may fold into complex three-dimensional structures necessary for its activity b. RNA & DNA are both usually double stranded c. DNA tends to fold into complex three-dimensional structures required for its activity d. DNA contains a pentose sugar with a hydroxyl group in the 2' position

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter8: Dna Structure And Function

Section: Chapter Questions

Problem 9SA: Energy that drives the attachment of a nucleotide to the end of a growing strand of DNA comes from...

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Which of the following statements about nucleic acids is not correct? Select one: A. In DNA the distance between the strands of the double helix is relatively constant. B. The growing DNA polymer is synthesized in the 5' to 3' direction. C. The enzymes that catalyze DNA synthesis are known as DNA polymerases. D. RNA strands are synthesized in the 3' to 5' direction. E. Unlike DNA, RNA is easily cleaved because the 2'-OH group of the ribose is a nucleophile that catalyzes hydrolysis of the strand.
is a single stranded RNA molecule held together by hydrog bonds. Answer: MRNA Which of these DNA fragments will be more stable at very have a high temperature Select one: a. GCCGATATATATACT h UCCCCCCCCCCC.
Which of the following are true statements about DNA and RNA? Select all that apply. RNA contains the base uracil and the sugar ribose RNA contains the base thymine and the sugar deoyribose The monomer (repeating subunit) of both DNA and RNA is a nucleotide (a sugar, a phosphate group and a nitrogenous base) RNA has two strands, while DNA is single stranded DNA has two strands, while RNA is single stranded
Which of the following does cytosine pair with? a. guanine b. thymine c. adenine d. a pyrimidine
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
Some events that take place in proteins synthesis are shown below: A. peptide bonds are formed B. a polypeptide is produced C. TRNAS bond to codons D. An MRNA attaches to the polypeptide synthesis site E. TRNAS enter the ribosome Which if the following shows the correct sequence? ОСDAЕ В ODECА В СED A В O DEACB EDABC D CEA B ОСDEВА O EDCAB АЕBDC EDACB
In the sugar molecule on a nucleotide, which of the following is correct in regards to how a DNA nucleotide can be differentiated from an RNA nucleotide? O the 2' Carbon on the sugar molecule is different between DNA and RNA nucleotides O the 3' Carbon on the sugar molecule is different between DNA and RNA nucleotides O the phosphate on the 5' carbon of the sugar molecule is different in both DNA and RNA nucleotides O the covalent bonds between nucleotides on DNA are different than RNA nucleotides
The following are all true of RNA, excepta. it is a single-stranded molecule existing in helical form. b. it contains uracil rather than thymine as the complementary base-pairing mate for adenine.c. uracil does not follow the pairing rules;therefore, the inherent DNA code ischanged.d. the sugar in RNA is ribose rather than deoxyribose
Which of the following is/are true about the two DNA strands that form a helix? (check all that apply) Select one or more: a.The 2 strands are antiparallel and complementary to each other b.The 2 strands are linked to each other by phosphodiester bonds c.The phosphate groups of nucleotides impart a negative charge to nucleic acids
Students are modeling MRNA during the process of protein synthesis. Which answer choice correctly describes the model of the MRNA strand being transcribed? The MRNA strand is complimentary to the DNA template strand; however, uracil instead of adenine is paired with thymine. O The MRNA strand is complimentary to the DNA template strand; however, uracil instead of thymine is paired with adenine. O The MRNA strand is an exact copy the DNA template strand; however, uracil instead of adenine is paired with thymine. The MRNA strand is an exact copy the DNA template strand; however, uracil instead of thymine is paired with adenine. a |理 2 Type here to search
The best definition of an endonuclease is that it hydrolyzes A. nucleotide from only the 3' -end of an oligonucleotide . B. nucleotide from either terminal of an oligonucleotide. C. phosphodiester bond located in the interior of a polynucleotide . D. bond only in a specific sequence of nucleotides. E. bond that is distal co the base chat occupies the 5' position of the bond
Double-stranded regions of RNA: a. are less stable than double-stranded regions of DNA. b. can be observed in the laboratory, but probably have no biological relevance. c. can form between two self-complementary regions of the same single strand of RNA. d. do not occur. e. have the two strands arranged in parallel (unlike those of DNA, which are antiparallel).