Ch 5 MC Q

Which of the following is not a reason cells divide?

• The cell gets too big to process and transport nutrients.
• New cells are needed for growth.
• DNA cannot be copied quickly enough in large cells.
• Surface area-to-volume ratio becomes too large.

Refer to the illustration. The cell in diagram 1 is in

• metaphase.
• anaphase.
• telophase.
• prophase.

Refer to the illustration. The cell shown in diagram 5 is in

• metaphase.
• anaphase.
• telophase.
• prophase.

Refer to the illustration. Which of the following correctly indicates the order in which these events occur?

• A, B, C, D
• C, B, A, D
• B, A, C, D
• A, C, B, D

Refer to the illustration. During which stage do the centromeres divide?

• A
• B
• C
• D

The chromosome of a bacterium

• is wrapped around proteins.
• has a circular shape.
• occurs in multiple pairs within the cell.
• is found within the nucleus.

The region of a chromosome where two sister chromatids are held together is called a

• spindle.
• nucleosome.
• centromere.
• centriole.

Chromatids are

• dense patches within the nucleus.
• bacterial chromosomes.
• joined strands of duplicated genetic material.
• prokaryotic nuclei.

When a chromosome condenses,

• a histone wraps around chromatin.
• beads form on the DNA double helix.
• its centromere splits.
• looped domains coil into a structure.

In order to fit within a cell, DNA becomes more compact by

• breaking apart into separate genes.
• extending to form very long, thin molecules.
• wrapping tightly around histones.
• being enzymatically changed into a protein.