Bio 151 Unit 3 practice

Cyclin and CDK are responsible for __________ the cell cycle

• stopping

• controlling

• ending

• starting

_____________ are built in to the cell cycle to make sure cell activities are done correctly

• Checkpoints

• End points

• Stop lights

• Flash lights

Cancer can happen in normal healthy organisms but is usually repaired

• true

• false

Cancer is caused from _________ cell growth

• uncontrolled

• normal

• regular

• slow

Risk of cancer __________ with age, due to many DNA mutations

• increases

• decreases

• stays the same

Programmed cell death is called __________

• cancer

• carcinogen

• apoptosis

Tobacco, alcohol, and radiation from the Sun are forms of ___________

• apoptosis

• carcinogens

• cancer

Stem cells are ___________ , which means they can become a different type of cell in the body later

• unspecialized

• specialized

 framework of microtubules that guide the movement of chromosomes during mitosis and meiosis

• spindle 
• centrosome 
• prophase 
• metaphase 

 region of cytoplasmic material that in animal cells contains structures called centrioles

• spindle
• centrosome 
• prophase 
• metaphase