DNA, Genes & Chromosomes (AQA A-Level Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the shape of the DNA molecule in prokaryotic cells?
What is the shape of the DNA molecule in prokaryotic cells?
Circular
Which type of cell has DNA associated with histone proteins?
Which type of cell has DNA associated with histone proteins?
Eukaryotic cells
What is a gene locus?
What is a gene locus?
Fixed position of gene on chromosome
Which statement about introns is correct?
Which statement about introns is correct?
Present in eukaryotes, absent in prokaryotes
Where is prokaryotic DNA located in the cell?
Where is prokaryotic DNA located in the cell?
Cytoplasm
What is the shape of eukaryotic DNA molecules?
What is the shape of eukaryotic DNA molecules?
Linear
What are plasmids in prokaryotic cells?
What are plasmids in prokaryotic cells?
Smaller circular DNA molecules
What percentage of human DNA actually codes for proteins?
What percentage of human DNA actually codes for proteins?
Less than 2%
How is a gene defined?
How is a gene defined?
DNA sequence coding for polypeptide/RNA
What do nucleosome structures in eukaryotic cells resemble?
What do nucleosome structures in eukaryotic cells resemble?
Beads on a string