[Maximum number: 1]
What type of bond does Z represent?
A
Covalent bond
B
Hydrogen bond
C
Peptide bond
D
Semi-conservative bond
Question rangeA1.2.3—Sugar-phosphate bonding
[Maximum number: 1]
Which parts of this nucleotide would bond covalently with other nucleotides in a DNA double helix?
A
1 and 2 only
B
1 and 3 only
C
2 and 3 only
D
1, 2 and 3
What is the arrangement of the components of nucleotides in a single DNA strand?
A
B
C
D
[Maximum number: 1]
The diagram shows a dinucleotide.
Which type of bond is identified by the arrow?
A
Phosphate
B
Hydrogen
C
Covalent
D
Peptide
[Maximum number: 1]
The diagram shows part of a DNA molecule.
What type of bond does X represent?
A
Covalent bond
B
Hydrogen bond
C
Peptide bond
D
Semi-conservative bond
[Maximum number: 1]
Which feature is common to both mRNA and DNA?
A
Covalent bonds between adjacent nucleotides
B
Hydrogen bonds between guanine and cytosine
C
Ribose sugar attached to phosphate
D
Antiparallel arrangement of polynucleotide strands
[Maximum number: 1]
What does the structure labelled X represent?
A
Hydrogen bond
B
Phosphate
C
Covalent bond
D
Base
[Maximum number: 1]
What is the correct arrangement for the components of one strand in a DNA molecule?
A
- phosphate - deoxyribose - base - phosphate - deoxyribose - base -
B
- base - deoxyribose - base - deoxyribose - base - deoxyribose - phosphate phosphate phosphate
C
- phosphate - deoxyribose - phosphate - deoxyribose - phosphate - deoxyribose -
D
- phosphate - base - phosphate - base - phosphate - base deoxyribose deoxyribose deoxyribose
[Maximum number: 1]
What is bonded to phosphates in a strand of RNA?
A
Only carbohydrates
B
Adenine, guanine, cytosine and thymine
C
Adenine, guanine, cytosine and uracil
D
Pentoses and bases