The Division Of Cells
Ian Howey
Video Descriptions
Cell Division
Cell division is the process by which a parent cell divides into two or more daughter cells. Cell division usually occurs as part of a larger cell cycle.
Mitosis
Mitosis is the process by which a cell, which has previously replicated each of its chromosomes, separates the chromosomes in its cell nucleus into two identical sets of chromosomes, each set in its own new nucleus.
Meiosis
Meiosis is a special type of cell division necessary for sexual reproduction in eukaryotes, such as animals, plants and fungi. The number of sets of chromosomes in the cell undergoing meiosis is reduced to half the original number, typically from two sets to one set.
Cell Division Quiz
Oxygen and food move into the cell by passing through the cell's
As a cell grows larger it requires more and more energy and thus needs greater amounts of ________________?
As a cell gets bigger, both its cell membrane and its _________ get bigger.
Instead of continuing to grow, cells _________ once they reach a certain size.
In what stage does a Cell spend the majority of its life?
________________________ is the division of the cytoplasm of the cell.
What stage of the cell cycle is this Plant Cell in?
_________________ results in new cells with genetic material that is identical to the original cell.
During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?
During which phase of mitosis do the chromosomes line up along the middle of the dividing cell?
What are stem cells?
What are the phases of the cell cycle? (remember IPMATC)
What is the first stage of mitosis?
The number of cells increase as an organism grows in this process: ____________
Mitosis Quiz
1. Examine the picture of the cell. What phase is the cell in?
prophase
anaphase
metaphase
telophase
2. What is the structure labeled X on the picture?
centriole
spindle
chromosome
chromatid
3. During which phase do chromosome first become visible?
interphase
telophase
metaphase
prophase
4. A cell with 10 chromosomes undergoes mitosis. How many daughter cells are created? ___ Each daughter cell has ___ chromosomes.
2, 10
10, 2
1, 10
2, 20
5. What structure is responsible for moving the chromosomes during mitosis?
nucleolus
nuclear membrane
spindle
cytoplasm
6. Cytokinesis begins in which phase?
metaphase
telophase
prophase
anaphase
7. Cells will generally divide when?
they are 10 hours old
they become infected
they become too large
they have no food
8. Which phase occurs directly after metaphase?
anaphase
telophase
metaphase
prophase
9. During which phase does the DNA make a copy of itself?
prophase
metaphase
interphase
anaphase
10. Each chromosome consists of 2 _____.
centrofibers
chromatids
daughter cells
centrioles
Meiosis Quiz
1. Meiosis results in _____
2 haploid daughter cells
4 haploid daughter cells
2 diploid daughter cells
4 diploid daughter cells
2. Which of the following cells undergo meiosis?
sperm cells
liver cells
unicellular organisms
all of these
3. The picture depicts what phase of meiosis
propase 1
prophase 2
anaphase 1
anaphase 2
4. Crossing-over occurs during:
anaphase 1
metaphase 1
prophase 1
prophase 2
5. Meiosis is a type of cell division that produces:
zygotes
chromosomes
DNA
gametes
6. Which of the following distinguishes prophase 1 of meiosis from prophase of mitosis?
homologous chromosomes pair up
spindle forms
nuclear membrane breaks down
chromosomes become visible
7. A cell with a diploid number of 24 undergoes meiosis, how many chromosomes are in each daughter cell?
6
12
24
48
8. The picture depicts what stage of meiosi
prophase 1
anaphase 1
metaphase 1
metaphase 2