Nucleic Acids

Q.

What is the difference between nucleotide and nucleoside?

Q.

What are the 4 types of Nucleotides?

Q. structures of phenylhydrazone and phenylhydrazine?

Q. CH4 BF3 NH3 BeCl2 Increasing order of bond angle ? Explain the reason.

Q.

Which of the following are purine bases?
(a) Guanine (b) Adenine (c) Thymine (d) Uracil

Q.

What are nucleic acids? Mention their two important functions.

Q.

What are the 2 types of nucleic acids?

Q.

Waht are nucleic acids? Mention their two important functions.

Q.

Are nucleic acids in vegetables?

Q.

Nucleic acids are the polymers of
(a) nucleosides (b) nucleotides (c) bases (d) sugars

Q. The complementary strand for the following single strand of DNA is:
$5^{\prime }\leftarrow A-T-G-C-T\to 3^{\prime }$

1. $3^{\prime }\leftarrow T-A-C-G-A\to 5^{\prime }$
2. $5^{\prime }\leftarrow T-A-C-G-A\to 3^{\prime }$
3. $5^{\prime }\leftarrow A-A-C-G-T\to 3^{\prime }$
4. $3^{\prime }\leftarrow A-T-G-C-T\to 5^{\prime }$

Q.

What nucleic acids are in DNA?

Q.

Aldopentoses named as ribose and 2-deoxyribose are found in nucleic acids. What is their relative configuration?

Q.

Name the nucleic acids

Q. Which of the following amino acids contain(s) sulphur?

1. Serine
2. Cysteine
3. Methionine
4. Asparagine

Q.

Which amino acid is asparagine formed from?

Q. Among the following essential amino acid is:

1. alanine
2. valine
3. proline
4. serine

Q. what is phorone

Q. How many of the following amino acids contain(s) sulphur?
Serine, Cysteine, Methionine, Asparagine.

Q. Which of the following bases is not present in DNA?

1. Adenine
2. Guanine
3. Thymine
4. Uracil

Q. Convert chloroform to chloroprene

Q.

Adenine pairs with thymine by 'x' hydrogen bonds, guanine forms 'y' hydrogen bonds with cytosine and 'z' hydrogen bonds with thymine. x, y and z are

1. 2, 3, 0

2. 2, 1, 3

3. 3, 1, 2

4. 3, 2, 1

Q. What are nucleic acids?

Q. Write down any two difference between nucleoside and nucleotide.

Q.

Cis-dicholoroethylene can be converted to trans-dichloroethylene by irradiation. During the
interconversion
(A) both the π and σ bonds are broken and reformed.
(B) only the π bond is broken and reformed.
(C) the C-Cl and C-H bonds are broken, H and Cl atoms interchange their positions and
new bonds are formed.
(D) both the π and σ bonds rotate along with the groups.

Q. structures of different isomeric amines corresponding to C_4H_{11}N.what type of isomerism is exhibited by different pairs of amines

Q. Why purine purine or pyrimidine pyrimidine base-pairing does not occur?

Q.

On the ozonolysis of alkynes, the third bond i.e. the bond between the carbons in the intermediate ozonide. (the bond which is not cleaved by ozone) is a Sigma bond or a π bond?

Q. Isoelectric point for neutral amino acid, glycine is (1) 7 (2) <7 (3) >7 (4) All of the above are possible

Q.

Hydrogen bonding is maximum in

1) C₂H₅5OH 2) CH₃3OCH₃ . 3) (CH₃)C=O

4) CH₃CHO