Cell Cycle Mitosis 26Q

The activities in the cell cycle occur during specific phases. In which phase of the cell cycle is DNA replicated?

• Mitosis

• G1 phase

• G2 phase

• S phase

This model of the cell cycle includes two arrows that each represent a process in the cycle. What do the two arrows represent?

• Arrow 1 prophase, Arrow 2 interphase

• Arrow 1 mitosis, Arrow 2 meiosis

• Arrow 1 interphase, Arrow 2 mitosis

• Arrow 1 meiosis, Arrow 2 prophase

Part of the cell cycle is shown in this simplified model.

This part of the cell cycle is best described as the process that —

.

• duplicates the DNA

• completes cell division

• maintains genetic homeostasis

• synthesizes new molecules

The phase of the cell cycle shown in the diagram is

• interphase

• mitosis

• cytokinesis

• DNA replication

People who have leukemia, a cancer that affects white blood cells, are often given Cytarabine. This drug inhibits the synthesis of DNA. Which phase of the cell cycle is most affected by Cytarabine?

• G1 phase

• S phase

• G2 phase

• M phase

The model represents the change in the DNA content of a cell during the cell cycle. Which part of the model represents the S phase?

• I

• II

• III

• IV

Checkpoints occur between the stages of the cell cycle. If a cell does not meet certain criteria at the end of a stage, it will not move to the next stage. Which of these occurs just before the cell enters the G2 stage of the cell cycle?

• The nuclear membrane disintegrates.

• DNA replications.

• Centrioles form.

• Nucleolus divides.

Neuron cells, like the one pictured, rarely replicate. Therefore, we consider them to be in the _____ phase.

• G0
• G1
• S
• Delay

Tags

NGSS.HS-LS1-4

After mitosis and cytokineses, one cell becomes...

• Two identical cells
• Two genetically different cells
• Four identical cells
• Four genetically different cells

Tags

NGSS.HS-LS1-4

A photomicrograph of onion root tip cells during mitosis is shown below. Which phase of mitosis is occurring in the cell indicated by the arrow?

• prophase

• metaphase

• anaphase

• telophase