Ch 10 | Quiz #7

Eukaryotic chromosome complexes are composed of 60% protein and 40% DNA. This complex is referred to as.

• Cohesin

• The histone complex

• The kinetochore

• Chromatin

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

• The centromere

• The centrosome

• The kinetochore

• The centriole

• The cohesin complex

Animal cells typically achieve cytokinesis by:

• forming a cell plate across the middle of the cell.

• chromosome clongation.

• chromosome condensation.

• forming a cleavage furrow that pinches the cell into two.

• binary fission.

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

• G2/M

• spindle

• G1/S

• G2/ M and spindle

• G1/S and G2/M

A scientist wants to study histones. Histones are:

• proteins that required for the activity of Cdk enzymes.

• Proteins that regulate checkpoints in the mitotic call cycle.

• proteins that double-stranded DNA molecules wrap around in prokaryotes and cukaryotes.

• proteins that double-stranded DNA molecules wrap around in eukaryotes.

• proteins that serve as the spindle fiber to pull sister chromstids apart during anaphase

Before cell division of somatic cells, each chromosome must be replicated. After replication, the resulting two parts of each chromosome are held together by cohesin at the centromere. These two parts are referred to as:

• Daughter chromosomes

• Homologous chromosomes

• Kinetochores

• Sister chromatids

• Genes

What is the sequence of events in a typical eukaryotic cell cycle?

• G1 to S to G2 to mitosis to cytokinesis

• G1 to G2 to S to mitosis to cytokinesis

• G1 to G2 to mitosis to S to cytokinesis

• Sto G1 to G2 to mitosis to cytokinesis

• G1 to S to G2 to cytokinesis to mitosis

The stage of the cell cycle during which the cytoplasm divides to form two cells is called:

• G2

• S

• Mitosis

• Cytokinesis

• G1

In what portion of the cell cycle do the chromosomes appear invisible under a light microscope because they are not yet condensed?

• Anaphase

• Prophase

• Metaphase

• Interphase

• Telophase

What happens during Anaphase B?

• The spindle apparatus disassembles.

• Kinetochores are pulled toward the poles

• The nuclear envelope reforms

• The APC/C gets activated for the first dime

• The spindle poles move apart.