- Put the stages of mitosis in sequential order.
- sister chromatids separate, spindle forms, chromosomes align at the equator, chromosomes uncoil
- chromosomes align at the equator, sister chromatids separate, chromosomes uncoil, spindle forms
- spindle forms, chromosomes align at the equator, sister chromatids separate, chromosomes uncoil
- chromosomes uncoil, spindle forms, chromosomes align at the equator, sister chromatids separate
- Which statement about interphase is TRUE?
- centrioles replicate during G1.
- DNA replicates during G2.
- Growth occurs during S phase.
- Organelles replicate during G1.
- Which phase of the cell cycle requires the most time to complete?
- G1
- G2
- M
- S
- During which phase of mitosis does the centromere split?
- Anaphase
- Metaphase
- Prophase
- Telophase
- During which phase of mitosis do chromosomes uncoil?
- Anaphase
- Metaphase
- Prophase
- Telophase
- Which is true about cytokinesis?
- involves division of the nucleus.
- Occurs during anaphase.
- Begins with a cleavage furrow in plants.
- Involves a contractile ring of filaments.
- A diploid cell having 16 chromosomes undergoes meiosis to produce which products?
- 2 cells with 8 double stranded chromosomes.
- 2 cells with 8 single stranded chromosomes.
- 4 cells with 8 double stranded chromosomes.
- 4 cells with 8 single stranded chromosomes.
- During which stage of meiosis can the exchange of genetic material occur?
- Anaphase I
- Metaphase I
- Prophase I
- Telophase I
- During which stage of meiosis do homologous chromosomes separate?
- Anaphase I
- Anaphase II
- Telophase I
- Telophase II
- Put the events of meiosis in order.
- Crossing over, synapsis, disjunction, random alignment.
- Disjunction, synapsis, crossing over, random alignment.
- Random alignment, synapsis, disjunction, crossing over.
- Synapsis, crossing over, random alignment, disjunction.
- Which name is given to the male germ cell?
- Primary spermatocyte.
- Secondary spermatocyte.
- Spermatagonium.
- Spermatid.
- Which name is given to a mature egg cell?
- Oocyte.
- Oogonium.
- Ootid.
- Ovum.
- Which statement about oogenesis is TRUE?
- maturation of oogonia occurs at puberty.
- Primary oocytes divide to produce ootids.
- Secondary oocytes have the haploid number of chromosomes.
- Ova form after fertilization.
- What is the function of the flagellum?
- Aids in the penetration of the egg.
- Allows for motility.
- Contains the genetic material.
- Provides a store of energy.
- Which is an advantage of using adult stem cells?
- Can be cultured in large numbers.
- Can differentiate into any type of cell.
- Cells can go long periods without differentiating.
- Will not be rejected by the patient.
- Which treatment is presently the most widely used on patients having leukemia?
- Cell based therapy.
- Chemotherapy.
- Radiation therapy.
- Therapeutic cloning.
17. How is oogenesis in females similar to spermatogenesis in males?
a.eggs and sperm are both diploid
b.eggs and sperm are both haploid
c. eggs and sperm are both produced before puberty
d.an equal number of both eggs and sperm reach maturity
18. During mitosis, which correctly describes the chromosomes?
a. located at the cell equator during prophase
b.located at the cell equator during telophase
c. move toward the poles of the cell during anaphase
d. move toward the poles of the cell during metaphase
19. Which is one aspect of meiosis that is different from mitosis?
a. two diploid cells result
b. four diploid cells result
c. two haploid cells result
d. four haploid cells result
20. Which stage of mitosis is indicated in the diagram below?
a. anaphase
b. metaphase
c. prophase
d. telophase
21. How do animal cells differ from plant cells?
a. animal cells have walls
b. animal cells have centrioles
c. only plant cells have mitochondria
d. only plant cells have chromosomes
22. What is a double chromosome made of?
a.one centrioles
b.one chromatid
c.two centrioles
d.two chromatids
23. What process results in double-stranded chromosomes?
a. formation of cell plates
b. formation of spindle fibers
c. replication of chromosomes
d. synapsis of homologous chromosomes
24. During which phase of meiosis does synopsis occur?
a. anaphase I
b. metaphase I
c. prophase I
d. telophase I
25. A cell with 36 chromosomes begins meiosis. What will result at the end of the process?
a. four haploid cells with 18 chromosomes each
b.four haploid cells with 36 chromosomes each
c. two diploid cells with 18 chromosomes each
d. two diploid cells with 36 chromosomes each
Label the following chart, which compares mitosis to meiosis in humans.
Explain which cells you would expect to undergo mitosis more frequently: skin cells or liver cells. Justify your answer.