Cell Cycle Regulation

The cell cycle is regulated by this

• cyclins

• stem cells

• cyclin-dependent kinases

• both cyclins and cyclin-dependent kinases

Tags

NGSS.HS-LS1-4

is a stage in the eukaryotic cell cycle at which the cell examines internal and external cues and "decides" whether or not to move forward with division.

• checkpoint

• chromosome

• interphase

• tumor

Cells spend the majority of their lives in

• Interphase

• Mitosis

• Synthesis 

• Gap 2

When cells go through mitosis repeatedly without entering interphase, this results

• arthritis

• cancer

• mutation

• diabetes

Tags

NGSS.HS-LS1-4

What is the role of cyclins in cell cycle regulation?

• They degrade DNA

• They promote cell division

• They prevent cell division

• They have no role in cell cycle regulation

Tags

NGSS.HS-LS1-4

• Different cyclin/CDK combinations control different activities at different stages of the cell cycle:

  • In the ​ (a)   stage of ​ (b)   , the combination signals DNA replication

• G2

• S

• prophase

• metaphase

• anaphase

• telophase

• mitosis

• cytokinesis

• interphase

• G1

Tags

NGSS.HS-LS1-4

• Different cyclin/CDK combinations control different activities at different stages of the cell cycle:

  • In the ​ (a)   stage of ​ (b)   , the combination signals the start of the cell cycle (and the end of it)

• G1

• G2

• S

• prophase

• metaphase

• anaphase

• telophase

• interphase

• mitosis

• cytokinesis

Tags

NGSS.HS-LS1-4

• The timing and rate of cell division is controlled by a combination of two substances: 

• proteins called​ ​ (a)   bind to enzymes called ​ (b)   during interphase and mitosis

• cyclins

• cyclin-dependent kinases (CDKs)

• carcinogens

• centromeres

• spindle fibers

• aster fibers

• centrioles

• motor proteins

• microfilaments

Tags

NGSS.HS-LS1-4

• Different cyclin/CDK combinations control different activities at different stages of the cell cycle:

  • In ​ (a)   of ​ (b)   , the combination signals nuclear division to start

• prophase

• metaphase

• anaphase

• telophase

• mitosis

• cytokinesis

Tags

NGSS.HS-LS1-4

What triggers the cell to move from G2 phase to mitosis?

• Completion of DNA replication

• Alignment of chromosomes at the cell's equator

• Separation of sister chromatids

• Formation of the spindle fibers

Tags

NGSS.HS-LS1-4