Question 1

The following image is a sugar found in nucleic acids:
 It is ___ and is found in the nucleic acid ___.

Accepted Answer

C

Question 2

The following is a sugar found in nucleic acids:
 It is ___ and is found in the nucleic acid ___.

Accepted Answer

B

Question 3

In the following structure, which labeled structure is the sugar residue?

Accepted Answer

C

Question 4

The purines and the pyrimidines are organic bases which

Accepted Answer

Purines and pyrimidines are classified as amines because they contain nitrogen atoms in their ring structures, which are characteristic of the amine functional group.

Question 5

A major base associated with the formation of nucleic acids is ___.

Accepted Answer

Thymine is one of the four nucleobases in the nucleic acid of DNA, which pairs with adenine.

Question 6

The most common nucleotides in nature are ___.

Accepted Answer

Nucleotides in nature are most commonly found as 5'-monophosphates, which is the standard form in which they are incorporated into nucleic acids (DNA and RNA).

Question 7

Deoxyribonucleic acid

Accepted Answer

Deoxyribonucleic acid (DNA) is primarily located in the nucleus of cells, where it serves as the blueprint for genetic information.

Question 8

How many bonds are broken when the following molecule is completely hydrolyzed?

Accepted Answer

The answer of How many bonds are broken when the...

Question 9

What is present in a nucleotide that is not found in a nucleoside?

Accepted Answer

A nucleotide consists of a nitrogen base, a monosaccharide (sugar), and one or more phosphate groups, whereas a nucleoside consists only of the sugar and the nitrogen base, lacking the phosphate group.

Question 10

When a purine or pyrimidine base is combined with a sugar residue such as ribose or deoxyribose, the resulting compound is known as a ___.

Accepted Answer

A nucleoside consists of a purine or pyrimidine base linked to a sugar molecule (ribose or deoxyribose), without the phosphate group that would make it a nucleotide.

Question 11

The following structure is known as a ___.

Accepted Answer

The answer of The following structure is known as a...

Question 12

Phosphoric acid can enter in reactions to produce a phosphate ester. Which of these is a phosphate ester?

Accepted Answer

The answer of Phosphoric acid can enter in reactions to...

Question 13

A monosaccharide incorporated in a nucleic acid is ___.

Accepted Answer

2-deoxyribose is the correct answer because it is the sugar component of DNA nucleotides, distinguishing DNA from RNA, which contains ribose.

Question 14

A nucleoside is the result of the reaction of

Accepted Answer

A nucleoside is formed by the combination of a monosaccharide (a simple sugar, such as ribose or deoxyribose) and an organic base (such as adenine, guanine, cytosine, or thymine in DNA, and uracil replacing thymine in RNA). This structure lacks the phosphate group that would make it a nucleotide.

Question 15

The base that will NOT combine with 2-deoxyribose to form a nucleic acid is ___.

Accepted Answer

2-deoxyribose is a sugar component of DNA, and uracil is not found in DNA; it is found in RNA.

Question 16

N-glycosides are

Accepted Answer

N-glycosides are formed when an amine group reacts with the hemiacetal (or hemiketal) carbon of a sugar, resulting in the replacement of the hydroxyl group attached to the anomeric carbon with an amine group. This forms a glycosidic bond involving nitrogen, hence the term N-glycoside.

Question 17

The following structure represents which of the following nucleotides?

Accepted Answer

The answer of The following structure represents which of the...

Question 18

DNA and RNA

Accepted Answer

A) DNA and RNA differ in both their monosaccharide components (DNA contains deoxyribose, while RNA contains ribose) and their nitrogen base components (DNA uses thymine, whereas RNA uses uracil).

Question 19

To form the molecule below, dehydration takes place at C1 of the pentose ring and at an N-H hydrogen at position ___ of the purine base.

Accepted Answer

The answer of To form the molecule below, dehydration takes...

Question 20

A cyclic nucleotide is produced when

Accepted Answer

Cyclic nucleotides are formed when the phosphate group forms a bond with two different hydroxyl groups on the same sugar molecule, creating a cyclic structure.

Quiz 13: Nucleic Acids

The following image is a sugar found in nucleic acids: It is _ and is found in the nucleic acid _.

The following is a sugar found in nucleic acids: It is _ and is found in the nucleic acid _.

In the following structure, which labeled structure is the sugar residue?

The purines and the pyrimidines are organic bases which

A major base associated with the formation of nucleic acids is ___.

The most common nucleotides in nature are ___.

Deoxyribonucleic acid

How many bonds are broken when the following molecule is completely hydrolyzed?

What is present in a nucleotide that is not found in a nucleoside?

When a purine or pyrimidine base is combined with a sugar residue such as ribose or deoxyribose, the resulting compound is known as a ___.

The following structure is known as a ___.

Phosphoric acid can enter in reactions to produce a phosphate ester. Which of these is a phosphate ester?

A monosaccharide incorporated in a nucleic acid is ___.

A nucleoside is the result of the reaction of

The base that will NOT combine with 2-deoxyribose to form a nucleic acid is ___.

N-glycosides are

The following structure represents which of the following nucleotides?

DNA and RNA

To form the molecule below, dehydration takes place at C1 of the pentose ring and at an N-H hydrogen at position ___ of the purine base.

A cyclic nucleotide is produced when

Quiz 13: Nucleic Acids

The following image is a sugar found in nucleic acids: It is ___ and is found in the nucleic acid ___.

The following is a sugar found in nucleic acids: It is ___ and is found in the nucleic acid ___.

In the following structure, which labeled structure is the sugar residue?

The purines and the pyrimidines are organic bases which

A major base associated with the formation of nucleic acids is ___.

The most common nucleotides in nature are ___.

Deoxyribonucleic acid

How many bonds are broken when the following molecule is completely hydrolyzed?

What is present in a nucleotide that is not found in a nucleoside?

When a purine or pyrimidine base is combined with a sugar residue such as ribose or deoxyribose, the resulting compound is known as a ___.

The following structure is known as a ___.

Phosphoric acid can enter in reactions to produce a phosphate ester. Which of these is a phosphate ester?

A monosaccharide incorporated in a nucleic acid is ___.

A nucleoside is the result of the reaction of

The base that will NOT combine with 2-deoxyribose to form a nucleic acid is ___.

N-glycosides are

The following structure represents which of the following nucleotides?

DNA and RNA

To form the molecule below, dehydration takes place at C1 of the pentose ring and at an N-H hydrogen at position ___ of the purine base.

A cyclic nucleotide is produced when

The following image is a sugar found in nucleic acids: It is _ and is found in the nucleic acid _.

The following is a sugar found in nucleic acids: It is _ and is found in the nucleic acid _.