Question 1

What is meant by semiconservative DNA replication?

Accepted Answer

When DNA strands are replicated,two daug

Question 2

Identify the structure.

Accepted Answer

A) uracil 
B) cytosine 
C) guanine 
D) thymine 
E) adenine 
A) uracil 
B) cytosine 
C) guanine 
D) thymine 
E) adenine

Question 3

Propose a mechanism for the conversion of D-glucose to D-glucose-6-phosphate using ATP as a source of the phosphate.

Accepted Answer

The answer of Propose a mechanism for the conversion of...

Question 4

Describe how RNA is easily cleaved.

Accepted Answer

The 2'-OH group of t

Question 5

What is the major structural difference between a ribonucleoside and a ribonucleotide?

Accepted Answer

A ribonucleotide is

Question 6

Which of the following explains the kinetic stability of ATP?

Accepted Answer

A) The hydrolysis of ATP occurs rapidly in the absence of a catalyst because the phosphate bonds are thermodynamically labile. 
B) ATP is positively charged at physiological pH. 
C) Water,the major component of cytoplasm,is a strong and very reactive nucleophile. 
D) ATP is negatively charged at physiological pH and thus repels the approach of nucleophiles. 
E) none of the above 
A) The hydrolysis of ATP occurs rapidly in the absence of a catalyst because the phosphate bonds are thermodynamically labile. 
B) ATP is positively charged at physiological pH. 
C) Water,the major component of cytoplasm,is a strong and very reactive nucleophile. 
D) ATP is negatively charged at physiological pH and thus repels the approach of nucleophiles. 
E) none of the above

Question 7

Why is the ΔG°' value for the hydrolysis of ATP large and negative? Give three reasons.

Accepted Answer

1.Because of ATP's greater negative char

Question 8

Give the final product of an amino acid reacting with ATP,then t-RNA.

Accepted Answer

amino acyl

Question 9

Draw the structure of uridine.

Accepted Answer

The answer of Draw the structure of uridine....

Question 10

What is the composition of a ribosome?

Accepted Answer

A) 40% protein,60% rRNA 
B) 60% protein,40% tRNA 
C) 40% protein,60% tRNA 
D) 40% protein,60% mRNA 
E) 100% protein,0% rRNA 
A) 40% protein,60% rRNA 
B) 60% protein,40% tRNA 
C) 40% protein,60% tRNA 
D) 40% protein,60% mRNA 
E) 100% protein,0% rRNA

Question 11

Draw the structure of TTP.

Accepted Answer

The answer of Draw the structure of TTP....

Question 12

Assuming that the human genome with its 3 billion base pairs is entirely in a b-helix,how long is the DNA in a human cell?

Accepted Answer

Recall that b-DNA has 10 base

Question 13

Draw the structure of thymidine.

Accepted Answer

The answer of Draw the structure of thymidine....

Question 14

Which of the following statements explains what nucleic acids are?

Accepted Answer

A) They are acidic in nature. 
B) They are the carriers of genetic information. 
C) DNA and RNA are collectively known as nucleic acids. 
D) Nucleic acids are chains of five-membered ring sugars,each bonded to a heterocyclic amine,linked by phosphate groups. 
E) all of the above 
A) They are acidic in nature. 
B) They are the carriers of genetic information. 
C) DNA and RNA are collectively known as nucleic acids. 
D) Nucleic acids are chains of five-membered ring sugars,each bonded to a heterocyclic amine,linked by phosphate groups. 
E) all of the above

Question 15

Give the second step of PCR.

Accepted Answer

A) esterification 
B) strand separation 
C) base-pairing of the primers 
D) DNA synthesis 
E) hydrolysis 
A) esterification 
B) strand separation 
C) base-pairing of the primers 
D) DNA synthesis 
E) hydrolysis

Question 16

Identify the nucleoside shown below.

Accepted Answer

The answer of Identify the nucleoside shown below.  ...

Question 17

Draw the structure of ATP.

Accepted Answer

The answer of Draw the structure of ATP....

Question 18

Methionine is the first amino acid incorporated into the heptapeptide specified by the following mRNA:
5'-AUGGACCCCGUUAUUAAACAC-3'.
What is the sequence of the amino acid in the heptapeptide?

Accepted Answer

Using the genetic co

Question 19

Draw the structure of ADP.

Accepted Answer

The answer of Draw the structure of ADP....

Question 20

Name the two pyrimidine bases which serve as components in deoxyribonucleotides.

Accepted Answer

cytosine a

Exam 26: The Chemistry of the Nucleic Acids

What is meant by semiconservative DNA replication?

Identify the structure.

Propose a mechanism for the conversion of D-glucose to D-glucose-6-phosphate using ATP as a source of the phosphate.

Describe how RNA is easily cleaved.

What is the major structural difference between a ribonucleoside and a ribonucleotide?

Which of the following explains the kinetic stability of ATP?

Why is the ΔG°' value for the hydrolysis of ATP large and negative? Give three reasons.

Give the final product of an amino acid reacting with ATP,then t-RNA.

Draw the structure of uridine.

What is the composition of a ribosome?

Draw the structure of TTP.

Assuming that the human genome with its 3 billion base pairs is entirely in a b-helix,how long is the DNA in a human cell?

Draw the structure of thymidine.

Which of the following statements explains what nucleic acids are?

Give the second step of PCR.

Identify the nucleoside shown below.

Draw the structure of ATP.

Methionine is the first amino acid incorporated into the heptapeptide specified by the following mRNA: 5'-AUGGACCCCGUUAUUAAACAC-3'. What is the sequence of the amino acid in the heptapeptide?

Draw the structure of ADP.

Name the two pyrimidine bases which serve as components in deoxyribonucleotides.

Remembering General Chemistry: Electronic Structure and Bonding

Acids and Bases: Central to Understanding Organic Chemistry

An Introduction to Organic Compounds: Nomenclature, physical Properties, and Structure

Isomers: the Arrangement of Atoms in Space

Alkenes: Structure,nomenclature,and an Introduction to Reactivity - Thermodynamics and Kinetics

The Reactions of Alkenes - the Stereochemistry of Addition Reactions

The Reactions of Alkynes - Introduction to Multistep Synthesis

Delocalized Electrons: Their Effect on Stability, pka, and the Products of a Reaction - Aromaticity and Electronic Effects: an Introduction to the Reactions of Benzene

Substitution and Elimination Reactions of Alkyl Halides

Reactions of Alcohols, ethers, epoxides, amines and Sulfur-Containing Compounds

Organometallic Compounds

Radicals

Mass Spectrometry,infrared Spectroscopy,and Uvvis Spectroscopy

Nmr Spectroscopy

Reactions of Carboxylic Acids and Carboxylic Acid Derivatives

Reactions of Aldehydes and Ketones

Reactions at the Α-Carbon

Reactions of Benzene and Substituted Benzenes

More About Amines - Reactions of Heterocylic Compounds

The Organic Chemistry of Carbohydrates

Amino Acids,peptides,and Proteins

Catalysis in Organic Reactions and in Enzymatic Reactions

The Organic Chemistry of the Coenzymes, compounds Derived From Vitamins

The Organic Chemistry of the Metabolic Pathways

The Organic Chemistry of Lipids

Synthetic Polymers

Pericyclic Reactions

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