Download 5.1 The Cell Cycle

yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

List of types of proteins wikipedia, lookup

Mitosis wikipedia, lookup

Cytokinesis wikipedia, lookup

Extracellular matrix wikipedia, lookup

Amitosis wikipedia, lookup

Organ-on-a-chip wikipedia, lookup

Endomembrane system wikipedia, lookup

Cell nucleus wikipedia, lookup

JADE1 wikipedia, lookup

Cellular differentiation wikipedia, lookup

Cell culture wikipedia, lookup

Cell growth wikipedia, lookup

Cell encapsulation wikipedia, lookup

Cell cycle wikipedia, lookup

Signal transduction wikipedia, lookup

Cytosol wikipedia, lookup

SULF1 wikipedia, lookup

Cell membrane wikipedia, lookup

Cell wall wikipedia, lookup

Cytoplasmic streaming wikipedia, lookup

Programmed cell death wikipedia, lookup

Biochemical switches in the cell cycle wikipedia, lookup

Apoptosis wikipedia, lookup

5.1 The Cell Cycle
Cells have distinct phases of growth, reproduction,
and normal functions.
5.1 The Cell Cycle
• I can describe the stages of the cell cycle.
• I can compare rates of division in different cell types.
• I can identify factors that limit cell size.
5.1 The Cell Cycle
The cell cycle has four main stages.
• The cell cycle is a regular pattern of growth, DNA
replication, and cell division.
5.1 The Cell Cycle
• The 4 main stages of the cell cycle are gap 1, synthesis,
gap 2, and mitosis.
– Gap 1 (G1): cell growth and
normal functions
– DNA synthesis (S): copies
– Gap 2 (G2): additional
– Mitosis (M): includes
division of the cell nucleus
(mitosis) and division of the
cell cytoplasm (cytokinesis)
• Mitosis occurs only if the cell is large enough and the DNA
5.1 The Cell Cycle
Cells divide at different rates.
• The rate of cell division varies with the need for those
types of cells.
• Some cells are unlikely to divide (G0).
5.1 The Cell Cycle
Cell size is limited.
• Volume increases faster than surface area.
5.1 The Cell Cycle
• Surface area must allow for adequate
exchange of materials.
– Cell growth is coordinated with
– Cells that must be large have
unique shapes.
5.1 The Cell Cycle
In which stage of the cell cycle do the nucleus and its
contents divide?
• A. synthesis
• B. gap 1
• C. mitosis
• D. gap 2
5.1 The Cell Cycle
5.1 The Cell Cycle
During the gap 1 stage of the cell cycle, a cell
• a. splits into two new cells.
• b. carries out its normal functions.
• c. duplicates its DNA.
• d. divides its cytoplasm.
5.1 The Cell Cycle
Which of the following phrases best describes cytokinesis?
• a. division of the cytoplasm
• b. division of the nucleus
• c. division of DNA
• d. division of surface area
5.1 The Cell Cycle
Which statement is true about the rates of cell division in
• A. They remain the same for the life of the organism.
• b. They are faster than that of prokaryotes.
• c. They increase with the age of the organism.
• d. They vary greatly within an organism.
5.1 The Cell Cycle
Which of the following limits the maximum size of a cell?
• a. the stage of the cell cycle
• b. the ratio of cell surface area to volume
• c. the number of mitochondria in the cell
• d. the size of the organism