Cell Division, Diversity, and Organisation (OCR A-Level Biology A): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What percentage of the cell cycle is spent in interphase?
What percentage of the cell cycle is spent in interphase?
95%
Which specialized cells lose their capacity to divide entirely?
Which specialized cells lose their capacity to divide entirely?
Muscle cells and nerve cells
Approximately how long is the cell cycle for hepatocytes (liver cells)?
Approximately how long is the cell cycle for hepatocytes (liver cells)?
About 1 year
What is produced during S phase?
What is produced during S phase?
Two identical sister chromatids
Which cellular components are NOT replicated during G₁ phase?
Which cellular components are NOT replicated during G₁ phase?
Chromosomes
How does cytokinesis differ in animal cells compared to plant cells?
How does cytokinesis differ in animal cells compared to plant cells?
Cleavage furrow vs cell plate
What does the metaphase checkpoint verify?
What does the metaphase checkpoint verify?
Chromosomes attached to spindle fibres
What is the DNA content level during G₂ phase?
What is the DNA content level during G₂ phase?
Elevated at ~8 µg
Approximately what percentage of the cell cycle does M phase represent?
Approximately what percentage of the cell cycle does M phase represent?
5%
What can occur when checkpoint mechanisms fail?
What can occur when checkpoint mechanisms fail?
Uncontrolled division, possibly cancer