WorksheetsVCE Unit 2 Biology AOS 1 Review
Total questions: 9
Worksheet time: 21mins
By which process to bacteria divide?
Mitosis
meiosis
budding
binary fission
Which of the following is not true about binary fission and mitosis?
Binary fission occurs more rapidly than mitosis.
The nuclear membrane breaks down and reforms during mitosis, but not during binary fission.
Spindle fibres are present during mitosis.
Binary fission occurs in eukaryotes, and mitosis occurs in prokaryotes.
Which one of the following statements about the cells resulting from mitosis is correct?
They are identical in shape, size and content to the original cell.
They are each half the size of the original cell and have identical nuclear content.
They are daughter and son cells.
They are each one quarter of the size of the original cell.
The figure above represents the stages of mitosis, but they are not in the order in which they occur.
Which of the options below shows the correct order for mitosis?
1, 6, 7, 3, 4, 2, 5
2, 5, 1, 3, 7, 6, 4
5, 1, 6, 7, 3, 4, 2
5, 1, 7, 6, 3, 4, 2
A cell with a diploid number of 12 chromosomes undergoes mitosis. What will the product at the end of mitosis be?
2 cells each with 12 chromosomes
4 cells each with 6 chromosomes
2 cells each with 6 chromosomes
4 cells each with 12 chromosomes
Which of the following is not an example of asexual reproduction?
reproduction via budding in baker’s yeast
formation of spores during sporogenesis without meiosis in red algae
formation of plantlets on specialised leaves of kalanchoe
fertilisation of orchids resulting in formation of a fruit
The use of embryonic stem cells has attracted a great deal of attention in the scientific world and in the media. Pluripotent stem cells are taken from embryos. They can be stimulated to become any type of cell in the body. This technology has given rise to many ethical questions because:
differentiated stem cells have no practical use outside the laboratory
stem cells must be taken from two-week-old embryos that have been removed from the uterus
there is no source of embryonic stem cells other than from aborted foetuses
stem cells are taken from excess embryos produced through the IVF process that would otherwise be discarded
Which of the following is a feature of cancer cells that makes them different from normal cells?
Cancer cells are unable to synthesise DNA.
Cancer cells are arrested at the S phase of the cell cycle
Cancer cells continue to divide even when they are tightly packed together.
Cancer cells are always in the M phase of the cell cycle.
Which of the following factors can contribute to a person developing cancer?
i genetic factors
ii oncogenes
iii exposure to a carcinogen
iv infection by human papillomavirus
i only
i and iii only
ii and iv only
i, ii, iii and iv
