Bio B: Unit 1 Mitosis

By the end of prophase, each of the following has occurred EXCEPT...

• tighter coiling of the chromosomes
• breaking down of the nuclear envelope
• disappearing of the nucleolus
• lining up of chromosomes in the cell

Which of the following does not occur as the cell grows larger and larger in size?

• difficulty obtaining nutrients
• difficulty eliminating wastes
• ratio of surface area to volume increases
• diffusion across the cell membrane is impaired

Why is the synthesis stage called this?

• because protein synthesis is taking place
• because DNA synthesis (DNA is copied) is taking place
• because it combines several smaller stages into one
• because the chromosomes come together

Which of these have occurred by the end of prophase?

• sister chromatids are seperated
• the spindle is beginning to form
• the cell membrane has begun to pinch inward
• the nuclear membrane has disappeared

Which of the following occurs in telophase?

• chromosomes condense
• chromosomes line up
• chromosomes move to opposite poles
• chromosomes relax

A cell has 12 chromosomes. How many chromosomes will each daughter cell have?

• 4
• 6
• 12
• 24

A cell that is undergoing Mitosis is examined with a light microscope. An observation that would allow for identification of the cell as an animal cell rather than a plant cell would be

• the cell membrane pinching in
• the chromosomes pairs separating from each other
• the chromosomes twisting about each other
• the nucleoli disappearing

DNA replication occurs during...

• anaphase
• interphase
• metaphase
• prophase

A cell that undergoes mitosis without cytokinesis would have...

• many daughter cells
• fewer chromosomes
• many nuclei
• cancerous properties

Which phase of Mitosis has the shortest duration?

• anaphase
• cytokinesis
• metaphase
• prophase