Activity 2.2.1 Pre-Test

An adult human body contains trillions of cells. Body cells go through the stages of the cell cycle. A diagram of the cell cycle is shown.

Describe two events that happen during interphase.

• Cell growth and DNA replication
• Cell division and protein synthesis
• Chromosome condensation and cytokinesis
• Nuclear fission and organelle formation

Identify one way a person’s body would be affected if cells go through excessive mitosis and cytokinesis.

• Enhanced cell repair
• Improved immune system
• Decreased risk of cancer
• Formation of tumors or cancer

What are the qualities of a malignant tumor?

• Ability to heal nearby tissues
• Ability to stay localized and not spread
• Ability to invade nearby tissues and spread to other parts of the body
• Inability to invade nearby tissues

What are the qualities of a benign tumor?

• Non-cancerous and slow-growing with well-defined borders
• Uncontrolled growth and spreading to other parts of the body
• Cancerous and aggressive
• Fast-growing and invasive

The cell cycle includes the phases interphase, mitosis, and cytokinesis.

Drag and drop each description to show the order of each phase.

• A cell develops and grows.

• Chromosomes of a cell separate.

• Cell membranes form to divide a cell into two cells.

What structure is the red arrow pointing to?

a

b

c

centromere

chromatid

centriole

chromosome

How many chromosomes do humans have?

• 46
• 21
• 10

When cancer spreads to other tissues of the body, it is called...

• Metastasis
• Invasiveness
• Angiogenesis
• Chemotherapy

• cell cycle
• mitosis
• cancer tumor
• DNA Replication

What is a biopsy?

• A medical procedure to remove cancerous tumors.

• A medical procedure to remove a small sample of tissue for examination

• A medical procedure to repair tissue damaged by cancer.

• A medical procedure to replace tumors with healthy tissue.