Figure 3 shows a cell from an onion root tip - Edexcel - GCSE Biology - Question 2 - 2021 - Paper 1
Question 2
Figure 3 shows a cell from an onion root tip. This cell is dividing by mitosis.
(a) (i) Which structure is labelled Z?
A allele
B chromosome
C spindle
D nuclear me... show full transcript
Worked Solution & Example Answer:Figure 3 shows a cell from an onion root tip - Edexcel - GCSE Biology - Question 2 - 2021 - Paper 1
Step 1
Which structure is labelled Z?
96%
114 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
The structure labelled Z is D nuclear membrane. This is indicated because during mitosis, the nuclear membrane breaks down, allowing the chromosomes to be separated into new cells.
Step 2
Give two reasons why mitosis is important in living things.
99%
104 rated
Only available for registered users.
Sign up now to view full answer, or log in if you already have an account!
Answer
Mitosis is essential for growth and development in multicellular organisms, as it allows for an increase in cell number.
Mitosis is important for tissue repair and regeneration, enabling the body to replace damaged or dead cells.
