Filters
Question type
Study Flashcards

DNA can best be described as


A) two backbones of alternating deoxyribose and nitrogenous base on the exterior,with phosphates on the interior
B) two backbones of alternating deoxyribose and nitrogenous base on the interior,with phosphates on the exterior
C) two backbones of alternating deoxyribose and phosphate on the exterior,with nitrogenous bases on the interior
D) two backbones of alternating deoxyribose and phosphate on the interior,with nitrogenous bases on the exterior
E) two backbones of alternating nitrogenous base and phosphate on the exterior,with deoxyriboses on the interior

F) B) and D)
G) A) and E)

Correct Answer

verifed

verified

Answer the following questions. a) If the following segment of mRNA (5') CUU-AGC-UGG-CCC (3') was changed to (5') CUU-AGC-UGG-CCU (3') how would the synthesized protein change? b) If the following segment of mRNA (5') CUU-AGC-UGG-CCC (3') was changed to (5') CUU-AGC-UGA-CCU (3') how would the synthesized protein change?

Correct Answer

verifed

verified

a) No change, both CCC and CC...

View Answer

Base pairs in DNA are


A) parallel to each other and parallel to the long axis of the DNA molecule
B) parallel to each other and perpendicular to the long axis of the DNA molecule
C) parallel to each other,with random orientations to the long axis of the DNA molecule
D) perpendicular to each other,with every other base pair parallel to the long axis of the DNA molecule
E) perpendicular to each other,with random orientations to the long axis of the DNA molecule

F) C) and D)
G) None of the above

Correct Answer

verifed

verified

What sequence is fully complementary to the following sequence? (5') ATCTAGTCA (3')


A) (5') TAGATCAGT (3')
B) (5') TGACTAGAT (3')
C) (5') ATCTAGTCA (3')
D) (5') ACTGATCTA (3')

E) B) and C)
F) B) and D)

Correct Answer

verifed

verified

Which reagent is used to accelerate coupling reactions in both laboratory peptide synthesis and laboratory DNA synthesis?


A) catalytic H+
B) dicyclohexylcarbodiimide (DCC)
C) ethyl chloroformate
D) NaOH
E) PhS- NH4+

F) B) and D)
G) A) and B)

Correct Answer

verifed

verified

B

What is the anticodon sequence in tRNA that corresponds the following segment of mRNA? (5')CUU-AGC-UGG-CCC(3')

Correct Answer

verifed

verified

(3')GAA-UC...

View Answer

What mRNA sequence is complementary to the following DNA base sequence? (5')TAAGGCGATA (3')

Correct Answer

verifed

verified

(3')AUUCCG...

View Answer

Which of the following represents the general sequence of events in the catabolism of nucleic acids?


A) hydrolysis,dephosphorylation,cleavage of the sugar
B) cleavage of the sugar,dephosphorylation,hydrolysis
C) dephosphorylation,hydrolysis,cleavage of the sugar
D) hydrolysis,cleavage of the sugar,dephosphorylation
E) dephosphorylation,cleavage of the sugar,hydrolysis

F) A) and D)
G) A) and B)

Correct Answer

verifed

verified

Which of the following is a definition of messenger RNA (mRNA) ?


A) RNA found in the ribosome,the site in cells where synthesis of proteins takes place
B) RNA which carries a specific amino acid to the site of protein synthesis
C) RNA which has coded genetic information
D) RNA which signals cell death

E) None of the above
F) B) and D)

Correct Answer

verifed

verified

How many hydrogen bonds are present in a G-C base pair and an A-T base pair,respectively?


A) 1,2
B) 2,2
C) 2,3
D) 3,2
E) 3,3

F) A) and B)
G) A) and C)

Correct Answer

verifed

verified

D

Which is true?


A) Both DNA and RNA are completely double-stranded.
B) Both DNA and RNA are completely single-stranded.
C) Both DNA and RNA contain ribose.
D) Both DNA and RNA contain uracil.
E) Both DNA and RNA contain phosphate.

F) C) and D)
G) All of the above

Correct Answer

verifed

verified

Which of the following characterizes the polymerase chain reaction (PCR) ?


A) produces multiple copies of DNA segments
B) requires small amount of the source DNA
C) the key to the process is a thermally stable enzyme
D) involves temperature cycling
E) all of these

F) A) and E)
G) A) and D)

Correct Answer

verifed

verified

Which of the following is uridine? Which of the following is uridine? A) 1 B) 2 C) 3 D) 4


A) 1
B) 2
C) 3
D) 4

E) A) and C)
F) All of the above

Correct Answer

verifed

verified

Rank DNA,mRNA,and tRNA from largest to smallest.


A) DNA > mRNA > tRNA
B) DNA > tRNA > mRNA
C) mRNA > tRNA > DNA
D) mRNA > DNA > tRNA
E) tRNA > mRNA > DNA

F) A) and E)
G) B) and E)

Correct Answer

verifed

verified

In some instances,base pairs other than the familiar G-C and A-T matches can form.For these alternate pairs to form,one of the two bases must tautomerize.Based on this information,draw a C-A pair and determine the number of hydrogen bonds that would stabilize the pair.

Correct Answer

verifed

verified

Two hydrog...

View Answer

Describe,in general terms,the steps involved in the automated synthesis of the DNA sequence GCT.

Correct Answer

verifed

verified

A double-stranded DNA molecule that contains 22%,on a mole basis,T must also contain


A) 11% G
B) 22% G
C) 28% G
D) 56% G
E) 78% G

F) A) and B)
G) D) and E)

Correct Answer

verifed

verified

What sequence of bases on the second strand of DNA is complementary to the following? (5')GCATTA (3')

Correct Answer

verifed

verified

(3')CGTAAT (5')or (5')TAATGC (3')

What amino acid sequence is coded by the following segment of DNA? (5')TTA-GCC-GTA-CTA-AAA (3')

Correct Answer

verifed

verified

Asn-Arg-Hi...

View Answer

The bond between the nitrogenous base and the sugar in a nucleoside is a glycosidic bond.Which type of reagent should cleave this bond?


A) acid
B) base
C) acid or base
D) neither acid nor base
E) It depends on which nitrogenous base and which sugar are present.

F) None of the above
G) A) and E)

Correct Answer

verifed

verified

Showing 1 - 20 of 23

Related Exams

Exam 1

Structure and Bonding

30 Questions

Exam 2

Polar Covalent Bonds: Acids and Bases

35 Questions

Exam 3

Organic Compounds: Alkanes and Their Stereochemistry

32 Questions

Exam 4

Organic Compounds: Cycloalkanes and Their Stereochemistry

18 Questions

Exam 5

Stereochemistry at Tetrahedral Centers

33 Questions

Exam 6

An Overview of Organic Reactions

32 Questions

Exam 7

Alkenes and Alkynes

34 Questions

Exam 8

Reactions of Alkenes and Alkynes

37 Questions

Exam 9

Aromatic Compounds

36 Questions

Exam 10

Structure Determination: Mass Spectrometry,infrared Spectroscopy,and Ultraviolet Spectroscopy

41 Questions

Exam 11

Structure Determination: Nuclear Magnetic Resonance Spectroscopy

37 Questions

Exam 12

Organohalides: Nucleophilic Substitutions and Eliminations

37 Questions

Exam 13

Alcohols,phenols,and Thiols: Ethers and Sulfides

19 Questions

Exam 14

Aldehydes and Ketones: Nucleophilic Addition Reactions

30 Questions

Exam 15

Carboxylic Acids and Nitriles

23 Questions

Exam 16

Carboxylic Acid Derivatives: Nucleophilic Acyl Substitution Reactions

42 Questions

Exam 17

Carbonyl Alpha-Substitution and Condensation Reactions

84 Questions

Exam 18

Amines and Heterocycles

28 Questions

Exam 19

Biomolecules: Amino Acids,peptides,and Proteins

36 Questions

Exam 20

Amino Acid Metabolism

34 Questions

Exam 21

Biomolecules: Carbohydrates

42 Questions

Exam 22

Carbohydrate Metabolism

41 Questions

Exam 23

Biomolecules: Lipids and Their Metabolism

31 Questions

Show Answer