Cell Cycle Regulation/ Cancer

Which phrase best describes a common characteristic of all cancers?

• absence of cyclins
• damaged DNA
• uncontrolled cell growth
• inherited from parents

Tags

NGSS.HS-LS3-2

Which of these may be assessed by various proteins during a "checkpoint"?

• Ensure that all chromosomes have lined up in the center of the cell before sister chromatids separate
• Ensure that spindle fibers have attached to all  centromeres before cell division
• Ensure that DNA has been replicated properly
• All of these

Tags

NGSS.HS-LS1-4

In which stage of the cell cycle is mutation most likely to happen? 

• G1
• S
• G2
• G0

Tags

NGSS.HS-LS3-2

Which of the following correctly describes cell that are in the G₀ phase?

• Mature nerve and muscle cells are unable to divide and are permanently in G₀.  
• Many cells enter G₀ when they reach the checkpoint during the M phase.
• Cells in G₀ are growing and preparing for cell division.
• DNA replication occurs during G₀.

Which of these is a risk factor for developing cancer? 

• growing older
• genetic inheritance
• exposure to carcinogens (toxins that can damage DNA)
• all of the above

Tags

NGSS.HS-LS3-2

How many check points are there before mitosis?

• 1
• 2
• 3
• 4

Tags

NGSS.HS-LS1-4

Which of the following is an external factor that speeds up cell division?

• A cut in the skin
• Hot weather
• The cell has grown big enough
• The chromosomes have lined up correctly

Which of the following cells have the longest lifespan in the body?

• Liver cells
• Skin cells
• Nerve cells
• Red blood cells

Which of the following is checked at G2 before mitosis can 'go ahead'?

• No DNA damage
• The cell is big enough
• The nucleus has broken down
• Spindle fiber has begun to form

A malignant tumor is

• harmless cell division
• non-cancerous
• cancerous
• controlled cell death

Tags

NGSS.HS-LS1-4