DNA Structure and Cell Cycles

Cells of organisms must go through cell division for?

• growth

• repair of damaged cells

• replacement of dying cells.

• All of these

Tags

NGSS.HS-LS1-4

DNA is replicated during ______ of the cell cycle.

• Gap 1

• Synthesis (S phase)

• Gap 2

• Gap 0

What is cytokinesis?

• This is when two cells merge together to make one giant cell.
• The stage where chromosomes migrate to the opposite ends of the cell. 
• The stage of the cell cycle where the rest of the cell divides after mitosis is complete.
• The stage in which DNA condenses into chromosomes.

Identify the parts of the nucleotide shown:

• 1) Ribose Sugar      2) Phosphate 
  3)  Nitrogen Base
• 1) Deoxyribose Sugar
  2) Phosphate
  3) Nitrogen Base
• 1) Phosphate
  2) Ribose Sugar
  3) Nitrogen Base
• 1)  Phosphate
  2) Deoxyribose Sugar
  3)  Nitrogen Base

Tags

NGSS.HS-LS1-1

What occurs during G1?

• Checkpoint after S phase
• Chromosomes line up at the equator.
• The cell grows and develops.
• Spindle fibers separate chromosomes to opposite poles of the cell. 

True or False:
Normal cells grow and divide continuously.

• True
• False

Tags

NGSS.HS-LS1-4

This process is the programmed death of a cell

• stem cell

• regulation

• apoptosis

• cytocide

^{______ is the uncontrolled growth of cells, often resulting in a tumor or mass of abnormal cells}

In which stage of the cell cycle is protein and organelle synthesis and the cell grows more

• G1

• S phase

• G2

• Cytokinesis

What is the result of the cell cycle?

• Three cells

• Four daughter cells

• 2 identical cells

• 1 clone cell

Tags

NGSS.HS-LS1-4