Cell Biology III
During which phase of mitosis do sister chromatids separate from each other?
anaphase
Which term describes centromeres uncoupling, sister chromatids separating, and the two new chromosomes moving to opposite poles of the cell?
anaphase
What is the term for the programmed death of cells?
apoptosis
Vegetative reproduction, budding, and fragmentation are examples of
asexual mitotic reproduction.
The most common form of reproduction among prokaryotes is
binary fission.
Chromosomes first become visible during which phase of mitosis?
prophase
When does DNA go from being uncoiled and loose to being condensed and coiled up?
prophase
What is the main difference between binary fission and mitosis?
Binary fission occurs in single-celled organisms only.
Which of the following statements is true of asexual reproduction?
It produces genetically identical offspring.
DNA is replicated at this time of the cell cycle:
S
Substances known to produce or promote cancer are called
carcinogens
When DNA is unwound, uncoiled, and all loose it is called ________________________
chromatin
When DNA is condensed and coiled up it is called ________________________
chromosome
Which of the following statements is true of cytokinesis?
completes the cell cycle
The processes of mitosis and cytokinesis produce two identical
daughter cells.
During metaphase DNA is in the form of
dyads in the form of chromosomes
Starfish that reproduce by splitting into pieces are reproducing by
fragmentation.
Proteins that bind to cells and stimulate cell division are called
growth factors.
Which is the term for the group of proteins that organizes and condenses long strands of DNA into tight coils?
histones
Two internal factors that are important in advancing the cell cycle are
kinases and cyclins.
The process of organizing and condensing DNA into its compact form takes place at the start of
mitosis.
During Gap 1 DNA is in the form of
monads in the form of chromatin
When do monads become dyads?
synthesis
Why do chromosomes coil during mitosis?
to allow the chromosomes to move without becoming entangled and breaking
Which phrase best describes cancer?
uncontrolled cell growth