Which statement is true about the rates of cell division in eukaryotes?
a. They remain the same for the life of the organism.
b. They vary greatly within the organism.
c. They are faster then that of prokaryotes.
d. They increase with the age of the organism.
100
D. Anaphase
During which phase of mitosis do sister chromatids separate from each other?
a. metaphase
b. prophase
c. telophase
d. anaphase
100
True.
True or False?
Growth factors are a broad group of proteins that stimulate cell division.
100
It is the regular pattern of growth, DNA duplication, and cell division that occurs in eukaryotic cells.
What is the cell cycle?
100
It is the creation of offspring from a single parent and doesn't involve the joining of gametes.
What is asexual reproduction?
200
A. Division of the cytoplasm.
Which of the following phrases best describe cytokinesis?
a. division of the cytoplasm
b. division of surface area
c. division of the nucleus
d. division of DNA
200
D. Histones
Which is the term for the group of proteins that organizes and condenses long strands of DNA into tight coils?
a. centromeres
b. chromatids
c. telomeres
d. histones
200
A. programmed cell death.
What is apoptosis?
a. programmed cell death
b. group of proteins that are rapidly made and destroyed at certain points in the cell cycle.
200
A region of the condensed chromosome that looks pinched.
What is a centromere?
200
It is the sexual reproduction of a single-celled organism by division into two roughly equal parts.
What is binary fission?
300
B. The ratio of cell surface area to volume.
Which of the following limits the maximum size of a cell?
a. the size of the organism.
b. the ratio of cell surface area to volume.
c. the number of mitochondria in the cell
d. the stage of the cell cycle.
300
C. Mitosis
The process of organizing and condensing DNA into its compact form takes place at the start of
a. cytokinesis
b. metaphase
c. mitosis
d. interphase
300
Fasle.
True or False?
A malignant is the common name for a class of diseases characterized by uncontrolled cell division.
300
The common name for a class of diseases characterized by uncontrolled cell division.
What is cancer?
300
It can be more efficient than sexual reproduction.
What is an advantage of asexual reproduction?
400
C. Carries out its normal functions.
During the gap 1 stage of the cell cycle, a cell
a. divides its cytoplasm.
b. duplicates its DNA
c. carries out its normal functions.
d. splits into two new cells.
400
A. Daughter cells
The processes of mitosis and cytokinesis produce two identical
a. daughter cells
b. chromatids
c. strands
d. chromosomes
400
A. carried by the blood stream or lymph system to other parts of the body.
What does metastasize do?
a. carried by the blood stream or lymph system to other parts of the body.
b. Its arises when regulation of the cell cycle breaks down.
c. Forms disorganized clumps called tumors.
400
The division of the cell nucleus and its contents.
What is mitosis?
400
Identical offspring will respond to the environment in the same way. If population members lack traits that enable them to reproduce, the entire population could die off.
What is a disadvantage of asexual reproduction?
500
D. Mitosis
In what stage of the cell cycle do the nucleus and its contents divide?
a. synthesis
b. gap 1
c. gap 2
d. mitosis
500
B. Completes the cell cycle.
Which of the following statements is true of cytokinesis?
a. occurs during prophase
b. completes the cell cycle
c. takes place in plant cells only
d. organizes DNA
500
A growth factor is a broad group of proteins that stmulate cell division. It influences the cell cycle because reductions in growth factor result in coordinate decreases in cell size and glycolysis and increases in cell cycle time.
Describe what a growth factor is and how it influences the cell cycle.
500
Substances known to produce or promote the development of cancer.
What is carcinogens?
500
True.
True or False?
In budding, a small projection grows on the surface of the parent organism, forming a separate new individual.