Transcript 5.1 The Cell Cycle

4.2
of Photosynthesis
•SetOverview
up Cornell Notes
on
pg. 61
•Topic: 5.1 The Cell Cycle
•Essential Question:
1. Using Table 5.2 to help
you: Do you think a
skin cell would have a
long or short G1
stage? Explain why.
The Cell Cycle
2.1 Atoms, 5.1
Ions,
and Molecules
1. Using Table 5.2 to help you: Do you think a
skin cell would have a long or short G1 stage?
Explain why.
KEY CONCEPT
Cells have distinct phases
of growth, reproduction,
and normal functions.
4.2 Overview of Photosynthesis
Cell Cycle Posters
(P. 134-137 in text)
• In groups of four
• Create a poster describing each of the four main stages of
the cell cycle
• You can make a picture bubble map, flow map, or any other
type of poster
• MUST INCLUDE:
– Cell cycle description
– Short description of what is happening in each stage
– Graphic of the cell cycle
Homework: 5.1 notes
Include all vocab, on pg. 60 please draw a
picture of the cell cycle
4.2 Overview of Photosynthesis
1. On pg. 56 of your INB please draw a picture bubble map of
the Cell Cycle. (Each part labeled and explained)
G1
G2
S
5.1 The Cell Cycle
Why do you think that you
always have to cut your hair,
your fingernails, and the
lawn?
The growth is made by new
cells being made.
5.1 The Cell Cycle
KEY CONCEPT
Cells have distinct phases of growth, reproduction,
and normal functions.
5.1 The Cell Cycle
Cycles
5.1 The Cell Cycle
Your body cells go through a cycle too. This cycle allows
new cells to be created to heal or replace dead or
damaged cells.
5.1 The Cell Cycle
• The cell cycle is a regular pattern of growth, DNA
replication, and cell division that occurs in eukaryotic cells.
• The cell cycle
is the process
of duplicating
somatic or
body cells
5.1 The Cell Cycle
STAGE 1- Gap 1 (G1)
•Cells carry out their normal functions
•Cells increase in size
•Organelles increase in number
* Cells spend most of their time here
5.1 The Cell Cycle
STAGE 2- Synthesis (S)
•Cell makes a copy of its nuclear DNA
•By the end of S stage the cell contains 2
complete sets of DNA
5.1 The Cell Cycle
STAGE 3- Gap (G2)
•Cells continue to carry out their normal functions
•Additional growth occurs
5.1 The Cell Cycle
STAGE 4 (includes 2 processes)
•Mitosis
•The division of a body cell’s nucleus and its
contents
•2 new nuclei form
•Cytokinesis
•The process that divides the cell cytoplasm
*
5.1 The Cell Cycle
The result of the cell cycle is 2
daughter cells that are identical to the
original cell
5.1 The Cell Cycle
The Cell Cycle Video (4m35s- 9m32s)
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).