Download BELL WORK: Answer the following questions:

Happy Monday!
BELL WORK:
Write the questions below AND your answers:
1. What is the product of the process of
TRANSLATION?
a)
b)
c)
d)
A complementary mRNA strand
Increased production of ribosomes
A completed protein
Replacement of disabled nucleotides
2. A mutation is LEAST LIKELY to affect a cell when the
mutation –
a) Reverses the order of bases in a DNA strand
b) Allows the total number of bases in a DNA sequence to
remain the same
c) Replaces a base with its complementary base
d) Produces a codon that codes for the same amino acid as
the original codon
*Outside of foldable*
Cell division: the process in which a cell
grows divides into two identical daughter
cells
Mitosis in the Cell
*Top Center of Foldable*
Cell Cycle : the series of events that
cells go through to grow and divide.
• Made up of two major phases: Interphase &
M Phase
• Used for organism growth and damage
repair
• Results in 2 genetically identical cells
*DRAW this
on the
bottom
center of
foldable*
G1 Phase
S
Phase
G2 Phase
*Top left of foldable*
Interphase:
• Majority of a cell’s life
• Includes 3 phases (G1, S, G2)
G1: cell increases in size, makes new
proteins and organelles.
*Top left of
foldable*
S phase:
DNA is
replicated
(copied)
Turn to your partner and
discuss…
WHY does the DNA have
to replicate before the
nucleus and cell divide?
*Top Left of foldable*
G2 Phase: the
organelles and
proteins required for
cell division are
produced.
When the G2 phase
is complete, the cell
is ready to divide.
*Bottom Left of foldable*
Checkpoints: points during the cell cycle
when the cell checks for errors or problems
Last two phases of the cell cycle:
M phase (mitosis)
and
Cytokinesis.
*Top Right of foldable*
Mitosis (M phase):
the nucleus divides
*Bottom Right of foldable*
Cytokinesis: the
cytoplasm divides
and 2 new identical
cells are produced
Mitosis is divided into
four phases:
prophase,
metaphase,
anaphase, and
telophase (PMAT).
*Under Mitosis on the right side of foldable*
Prophase: the chromosomes become visible,
the centrioles separate to opposite sides of the
cell, the chromosomes attach to the spindle,
the nucleolus disappears, and the nuclear
envelope breaks down.
DRAW THIS!
The centrioles are two
tiny structures located
in the cytoplasm that
help organize the
spindle.
The spindle is a
fanlike microtubule
structure that helps
separate the
chromosomes.
Metaphase, the
chromosomes line up
across the center of the
cell.
Anaphase: the
centromeres joining the
sister chromatids split
and the chromosomes
move away into two
groups near the poles
of the spindle.
DRAW THESE!
Telophase: the chromosomes begin to
disperse, the nuclear envelopes
reappear to form two new nuclei
(nuclei = more than 1 nucleus)
DRAW THIS!
…cell division is not complete after telophase…
Cytokinesis: division of the cytoplasm, two identical
cells produced
Homework Tonight!
• On YouTube, search “Amoeba Sisters Mitosis”
– Write down the title NOW or take a picture
of it 
• Or, go to my website and find tonight’s
homework assignment
• Complete Cornell Notes while watching!
Mind Map
• At your tables, decide what phase (or
phases!) of the cell cycle could include your
words.
• Words may belong with more than one
phase.
• You will have 10 minutes to discuss at your
tables, then you will tell the class when I
call on you.
• We will all fill in the mind map together.
Card Sort
• Place the “CELL CYCLE” card in the middle of
your table.
• Place the numbered picture cards in a circle
around it, in the order you think they belong.
• Place the description cards with the pictures you
think they are describing.
• As we go through the PowerPoint, make
corrections as needed and place the phase
names in their proper order.