Exam 10: How Cells Divide

The accommodation of the very long DNA strands that are part of a chromosome into the limited space of the nucleus is achieved by coiling the DNA around beads of histones into repeating subunits.These DNA-wrapped histones are called:

Consider the cell cycle of a human cell.During G2,what is the state of the homologous chromosomes?

Following S phase,a human cell would have how many pairs of sister chromatids and individual DNA molecules?

At what checkpoint(s)does the cell arrest in response to DNA damage?

A scientist wants to study histones.Histones are:

Animal cells typically achieve cytokinesis by:

Embryonic cell cycles allow the rapid division of cells in the early embryo.These mitotic cell cycles are much shorter in length than the mitotic cell cycles of cells in a mature organism.In the embryonic cell cycles,mitosis takes approximately the same amount of time as it does in the cell cycles of mature cells.What do you think is a result of the embryonic cycle?

What stage of mitosis is essentially the reverse of prophase?

If a chromosome contains a mutation such that it cannot bind to the kinetochore complex,what would be the consequence?

This protein or protein complex functions in the cell to stop cell division if the cell has experienced extensive DNA damage:

The point of constriction on chromosomes that contains certain repeated DNA sequences that bind specific proteins is called:

The physical distribution of cytoplasmic material into the two daughter cells in plant cells is referred to as:

The stage of mitosis characterized by the physical separation of sister chromatids is called:

What time point represents G₂?

A duplicate copy of all of the hereditary information contained in the nucleus of eukaryotic cells is made during what stage of the cell cycle?

What would you expect to happen if the anaphase-promoting complex/cyclosome (APC/C)failed to ubiquitinate securin?

The two copies of each type of chromosome found in normal somatic (body)cells in an organism,throughout the cell cycle,are called:

How does the organization of the bacterial genome differ from the organization of the eukaryotic genome?

If there are 32 sister chromatids in a normal somatic cell,how many chromosomes are there?

If a cell has 32 chromosomes prior to S and undergoes mitosis followed by cytokinesis,each new daughter cell will have how many chromosomes?