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28 Cards in this Set

  • Front
  • Back

A cell with 10 chromosomes undergoes mitosis and cell division. How many daughter cells are produced and what number of chromosomes do they have?

Two Daughter Cells and ten chromosomes each.

Which eukaryotic cell cycle event is missing in binary fission?

Karyokinesis


A duplicated chromosome typically has how many molecules of DNA?

2

A mutated gene that codes for an altered version of Cdk that is active in the absence of cyclin is a(n) _____.

Proto-Oncogene

A gene that codes for a positive cell cycle regulator is called a(n) _____.

Proto-Oncogene

A human cell fails to undergo cytokinesis while performing mitosis so that they daughter cells do not form. How many chromosomes will be in the resulting cell?

92

Which negative regulatory molecule can trigger cell suicide (apoptosis) if vital cell cycle events do not occur?

p53

The genes that malfunction in cancer normally

Regulate cell division

If cells in the process of dividing are subjected to colchicine, a drug that interferes with the functioning of the spindle apparatus, at which stage will mitosis be arrested?

Anaphase

The fusing of Golgi vesicles at the metaphase plate of dividing plant cells forms what structure?

Cell plate

Which protein is a positive regulator that phosphorylates other proteins when activated?

cyclin-dependent kinase (Cdk)

Unpacking of chromosomes and the formation of a new nuclear envelope is a characteristic of which stage of mitosis?

Telophase

Separation of the sister chromatids is a characteristic of which stage of mitosis?

Anaphase

A plant cell has 12 chromosomes at the end of mitosis. How many chromatids would this plant cell have in the G2 phase of its cell cycle?

24

Which of the following events does not occur during some stages of interphase?

separation of sister chromatids

One of the major differences in the cell division of prokaryotic cells compared to eukaryotic cells is that

the chromosomes do not separate along a mitotic spindle in prokaryotic cells.

During which phase do chromosomes become visible?

Prophase

DNA synthesis happens during mitosis.


False

If there are 20 centromeres in a cell, how many chromosomes are there?

20

Identical copies of chromatin held together by cohesin at the centromere are called _____.

Sister chromatids

A plant cell has 12 chromosomes at the end of mitosis. How many chromosomes would it have in the G2 phase of its next cell cycle?

12

What is the main prerequisite for clearance at the G2 checkpoint?

accurate and complete DNA replication

The mitotic spindles arise from which cell structure?

centrosome

Which of these events occurs during anaphase?

centromeres divide

How many sets of chromosomes does a normal human cell have?

46

Attachment of the mitotic spindle fibers to the kinetochores is a characteristic of which stage of mitosis?

Prometaphase

The first level of DNA organization in a eukaryotic cell is maintained by which molecule?

Histone

A cell is in metaphase if

the chromosomes are aligned at the midplane of the cell.