Observing Mitosis in Onion Root Cells (VCE SSCE Biology): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Why are onion root cells ideal for observing mitosis?
Why are onion root cells ideal for observing mitosis?
They are constantly dividing and growing
What are the three main stages of the eukaryotic cell cycle?
What are the three main stages of the eukaryotic cell cycle?
Interphase, Mitosis, Cytokinesis
Why is HCl and heat treatment essential in this investigation?
Why is HCl and heat treatment essential in this investigation?
It breaks down cell walls & makes DNA accessible
What is special about Feulgen stain?
What is special about Feulgen stain?
It binds only to DNA
What temperature should the water bath be set to?
What temperature should the water bath be set to?
60°C
What does it mean if you observe more cells in a particular stage of mitosis?
What does it mean if you observe more cells in a particular stage of mitosis?
That stage takes longer to complete
Which stage typically has the highest percentage of cells?
Which stage typically has the highest percentage of cells?
Prophase (50-70%)
What magnification should be used to observe the root tip?
What magnification should be used to observe the root tip?
400×
If 50 cells are in prophase out of 200 total cells, what is the percentage?
If 50 cells are in prophase out of 200 total cells, what is the percentage?
25%
Why should you avoid trapping air bubbles when placing the coverslip?
Why should you avoid trapping air bubbles when placing the coverslip?
They interfere with observations