Transcript Cellular Growth Notes (9.1)

Cellular Growth (9.1)
State Standard
2E. Compare the advantages of sexual
reproduction and asexual reproduction in
different situations.
Chapter 9
Cellular Reproduction
9.1 Cellular Growth
Why Do Cells Need to Divide?
Ratio of ________ ________ to ________
Chapter 9
Cellular Reproduction
9.1 Cellular Growth
Why Do Cells Need to Divide? – Cont’d
 As the cell grows, its volume increases
much ________ ________ than the
surface area.
If a cell gets too large…
 The cell might have difficulty getting enough
________ ___ and getting enough ______
___.
 The cell might have difficulty ____________
instructions across long distances within a
large cell.
Chapter 9
Cellular Reproduction
9.1 Cellular Growth
The Cell Cycle
 Cell division ____________ the cell from
becoming too large.
 It also is the way the cell reproduces so that
you ______, heal certain injuries, & replace
worn out cells.
 Cells reproduce by a cycle of growing and
dividing called the ________ ________.
Chapter 9
Cellular Reproduction
9.1 Cellular Growth
The Cell Cycle – Cont’d
 __________ is the stage during which the
cell grows, carries out cellular functions,
and replicates.
 __________ is the stage of the cell cycle
during which the cell’s nucleus and nuclear
material divide.
 __________ is the method by which a cell’s
cytoplasm divides, creating a new cell.
Chapter 9
Cellular Reproduction
9.1 Cellular Growth
Interphase – Stage G1
 The first stage of interphase, G1
 The cell is ____________, carrying out
normal cell functions, and preparing to
replicate DNA.
Chapter 9
Cellular Reproduction
9.1 Cellular Growth
Interphase – Stage S
 The cell ______ ______ ______ in
preparation for cell division.
Chapter 9
Cellular Reproduction
9.1 Cellular Growth
Interphase – Stage G2
 The cell __________ for the division of its
nucleus.
Chapter 9
Cellular Reproduction
9.1 Cellular Growth & Regulation
Normal Cell Cycle
 Different __________
including cyclins time
and control the life &
activities of the cell.
 The cell cycle has builtin ____________ that
monitor the cycle and
can stop it if something
goes wrong.
Chapter 9
Cellular Reproduction
9.1 Cellular Growth & Regulation
Abnormal Cell Cycle: Cancer
 Cancer is the
____________
________ and
division of cells.
 Cancer cells can kill
an organism by
crowding out normal
cells, resulting in the loss of tissue function.
Chapter 9
Cellular Reproduction
9.3 Cellular Growth & Regulation
Causes of Cancer
 The changes that occur in the regulation of
cell growth and division of cancer cells are
due to ____________.
 Various environmental factors can affect the
occurrence of cancer cells.