Session 10 Quiz Wed

When a cell is not dividing, DNA is in the form of …

• Chromosomes

• Chromatins

• Chromatids

• Duplicates

The following statement is true regarding sister chromatids …

• In mitosis, they are not genetically identical

• They are held together by cohesins

• They appear close but are not actually attached to each other

• Their structure consists of centrosome

The following event(s) occur true during interphase. (select all that apply)

• The cell is resting

• Proteins are produced

• DNA is duplicated

• Organelles fragment and disintegrate

The chromosomes are attached to microtubules during … (select all that apply)

• Prophase

• Late prophase

• Metaphase

• Anaphase

During anaphase, non-kinetochore microtubules … (select all that apply)

• Depolymerize

• Pull the chromosomes

• Elongate the cell

• Interact with those from the other pole

Cleavage furrow that appears in animal cells during cytokinesis is resulted from the interaction between … (select all that apply)

• tubulin

• actin

• myosin

• cohesion

Which of the following event occurs last?

• External or internal signals received.

• Cyclins production increases.

• Cdk activity increases.

• MPF actively phosphorylates cell division.

MPF is composed of two subunits; they are ...

• Cyclins

• GTP

• Cohesins

• Cdk

The following statement is true regarding G0 … (select all that apply)

• Mature neurons, striated muscle cells, osteocytes permanently stay at G0.

• The cell is preparing to divide.

• The cell does not receive a “go” signal at G1.

• The DNA is being duplicated.

Cancer cells exhibit the ability to … (select all that apply)

• Recognize physical signals (density and anchorage).

• Spread to locations distant from its original site.

• Convey GF signal without the actual presence of GF.

• Remain at its original site and form a mass.