Happy Monday!

BELL WORK:

Write the questions below AND your answers:

1. What is the product of the process of TRANSLATION?a) A complementary mRNA strandb) Increased production of ribosomesc) A completed proteind) 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 strandb) Allows the total number of bases in a DNA sequence to

remain the samec) Replaces a base with its complementary based) 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

G1 Phase

SPhase

G2 Phase

*DRAW this on the bottom

center of foldable*

*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.