Lesson 4.6.1.5
4.6.1.5 DNA structure (biology only) Quiz: AQA Biology, Unit 6
20 questions
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Lesson 4.6.1.5, DNA structure (biology only): 20 multiple choice questions for the AQA GCSE Biology (8461), Unit 6: Inheritance, variation and evolution, written with Revision Ninja.
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The 20 questions
-
How many different nucleotides make up DNA?
- Four
- Twenty
- Three
- Two
-
Which four bases are found in DNA?
- A, T, R and Y
- C, G, U and P
- A, C, G and T
- A, U, G and C
-
Which three components make up a single DNA nucleotide?
- Sugar, amino acid, protein
- Phosphate, lipid, base
- Sugar, phosphate, base
- Base, acid, polymer
-
How many bases in a row code for one amino acid?
- One
- Three
- Four
- Two
-
What does the order of bases in a DNA strand directly control?
- Cell division rate
- Glucose production
- Amino acid order
- Lipid absorption
-
What two chemical units form the alternating backbone of a DNA strand?
- Sugar and phosphate
- Base and sugar
- Protein and sugar
- Phosphate and base
-
In a DNA nucleotide, what structure is directly attached to each sugar molecule?
- A base
- An amino acid
- A fatty acid
- A protein
-
DNA is described as a polymer built from what repeating units?
- Chromosomes
- Genes
- Nucleotides
- Amino acids
-
A DNA sequence has 12 bases read in non-overlapping triplets. How many amino acids can it code for?
- 3
- 12
- 4
- 6
-
Which two components form the alternating backbone of a DNA strand?
- Sugar and phosphate
- Nucleotide and protein
- Phosphate and base
- Base and amino acid
-
Which components of a DNA nucleotide are identical in all four types?
- Base and sugar
- Sugar and phosphate
- Base and phosphate
- Phosphate and base
-
Which of these is NOT a base found in DNA?
- U
- A
- T
- G
-
How many different three-base combinations are possible if each position can hold one of four bases?
- 16 combinations
- 12 combinations
- 64 combinations
- 27 combinations
-
A gene has 300 bases in its coding part. How many amino acids can it code for at most?
- 100
- 50
- 300
- 150
-
DNA is a polymer made up of repeating units called what?
- Nucleotides
- Fatty acids
- Monosaccharides
- Amino acids
-
How many DNA bases code for a single amino acid?
- Three
- Four
- Two
- One
-
A coding sequence has 10 amino acids. How many bases are needed to code for them?
- 30
- 40
- 20
- 10
-
In a DNA strand, which component is directly attached to each base?
- Amino acid
- Phosphate
- Sugar
- Protein
-
What three components make up a single DNA nucleotide?
- Phosphate, base, acid
- Sugar, phosphate, lipid
- Sugar, phosphate, base
- Sugar, protein, base
-
How many amino acids are coded for by a sequence of six DNA bases?
- One
- Three
- Two
- Six
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