POGIL: The Cell Cycle

How many phases are in the cell cycle as shown in the diagram in Model 1?

• 1

• 2

• 3

• 4

Answer explanation

Be careful when you count each phase.

Tags

NGSS.HS-LS1-4

During which phase does the size of the cell increase?

• G₁

• G₂

• S

• M

Answer explanation

According to the Model, there is a single cell at the end of G₁, S, and G₂. Try to find the two cells and determine which phase is connected to two cells.

According to the table, which row would correctly identify the names of each phase of the Cell Cycle?

• Row 1

• Row 2

• Row 3

• Row 4

Answer explanation

Be careful when using both Model 1 and Model 2 to help answer this question.

Tags

NGSS.HS-LS1-4

According to question #6, which is the name of uncontrolled cell growth?

• Synthesis

• Cancer

• Mitosis

• Cytokinesis

Answer explanation

Be careful when reading the questions in these POGIL exercises. It would be a good idea to use the 'Annotating Text' method we discuss in class.

Tags

NGSS.HS-LS1-4

Cancer, the uncontrolled growth of cells, often results in a tumor, or mass of abnormal cells.

Some cancerous tumors consist of many cells that are much smaller than normal. According to

Model 1, what part(s) of the cell cycle is (are) most likely being affected?

• Gap 1

• Synthesis

• Gap 2

• Mitosis

Answer explanation

Since cancerous tumors consist of many cells that are much smaller than normal, Gap 1 (the G₁ phase) is most likely being affected. Remember that the G₁ phase is responsible for cell growth before proceeding to the S phase.

Tags

NGSS.HS-LS1-4

According to Model 3, ultraviolet light is affecting a cell in which phase of the cell cycle?

• M phase

• G₁ phase

• G₂ phase

• S Phase

Answer explanation

Be careful when reading through a Model to find the information that you need.

Tags

NGSS.HS-LS1-4

Most normal cells in an adult organism are in which phase of the cell cycle?

• G1 phase

• G2 phase

• Mitosis (M phase)

• S phase

Answer explanation

If they are asking for time, be sure to compare the Time Interval column in Model 2.

If a culture in the lab starts with one human cell, how many cells will there be after 24 hours? (enter your answer as a NUMBER)

Answer explanation

Remember that the point of cell division is to make more cells. Essentially we double the number of cells that we start with at the end of each cell cycle.

Tags

NGSS.HS-LS1-4

If a culture in the lab starts with two human cells, how many cells will there be after 24 hours? (enter your answer as a NUMBER)

Answer explanation

Remember that the point of cell division is to make more cells. Essentially we double the number of cells that we start with at the end of each cell cycle.

Tags

NGSS.HS-LS1-4

Occasionally cells stop dividing and enter another phase. What is the name of this special phase?

• G₁ phase

• S phase

• G₂ phase

• M phase

• G₀ phase

Answer explanation

Be sure to read questions from the POGIL packet carefully.