The Cell Cycle
Mitosis
Meiosis
Misc.
100
During interphase a cell grows, duplicates organelles and
Copies DNA.
100
The purpose of mitosis includes all of the following EXCEPT
Formation of gametes of a frog
100
The process of meiosis starts as a diploid cell and finishes with haploid egg or sperm. What type of diploid cell, at the start of meiosis, produces egg or sperm?
Germ Cells
100
Which letter indicates a spindle fiber?
A
200
Checkpoints occur between the stages of the cell cycle. If a cell does not meet certain criteria at the end of a stage it will not move on to the next stage. During which stage of interphase does DNA replicate?
S Phase
200
What is the product of mitosis?
2 genetically identical daughter cells
200
Human body cells have 46 chromosomes. Meiosis is necessary in order to ensure that each gamete produced in the human body has
23 chromosomes
200
What is the DISADVANTAGE of asexual reproduction?
offspring are all genetically identical.
300
Where in the cell cycle does the cell spend the most time?
Interphase
300
If DNA did not replicate before mitosis, how would this change the resulting cell?
The daughter cell would have HALF as many chromosomes as the parent cell.
300
Which structure represents a tetrad that could be found in prophase of meiosis?
III
300
Why is crossing over so important?
It is a source of genetic variability.
400
Why do skin cells divide more quickly than those in the liver?
They undergo more wear and tear.
400
A grasshoppers body cells are diploid (2n) and have 18 chromosomes. If a grasshopper liver cell goes through MITOSIS, how many chromosomes would be found in each daughter cell produced?
18
400
Sexual reproduction in animals depends on the production of gametes. Which of these processes produces gametes in animals?
Meiosis
400
Planaria are free-living flatworms that live in quiet ponds or bodies of water. The organism will pull itself in half, or even into thirds, and will regenerate a new head, midsection and talk. The pieces of the planaria will also regenerate into full, living organisms. What type of asexual reproduction is this?
Fragmentation
500
One difference between a cancer cell and a normal cell is that
cancer cells divide uncontrollably, without checkpoints.
500
These diagrams represent different stages of animal somatic cell division. From start to finish, what is the correct order of the stages?
2, 4, 3, 1
500
Which of the following statements is INCORRECT about the image?
It shows the process of mitosis.
500
What is the difference between meiosis I and meiosis II?
Homologous pairs line up and separate during meiosis 1 while sister chromatids line up and separate during meiosis 2