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12/2 & 12/3 - 7 th Grade Agenda. Collect HW: Workbook p.77-78 Cell Cycle Quiz Brain Pop: Respiration Cell Video Video: Bill Nye Respiration Class Reading p.129-134 HW: Workbook p.79 – 80. Mitosis Animations & Movie.

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12 2 12 3 7 th grade agenda

12/2 & 12/3 - 7th Grade Agenda

Collect HW: Workbook p.77-78

Cell Cycle Quiz

Brain Pop: Respiration

Cell Video

Video: Bill Nye Respiration

Class Reading p.129-134

HW: Workbook p.79 – 80


Mitosis animations movie
Mitosis Animations & Movie

  • http://microscopy.fsu.edu/primer/java/scienceopticsu/powersof10/index.html

  • http://www.mybiology.com/archive_movies/the_cell_movies.htm

  • http://www.cellsalive.com/mitosis.htm

  • http://www.cellsalive.com/cell_cycle.htm

  • http://www.pbs.org/wgbh/nova/baby/divide.html#

  • http://www.contexo.info/DNA_Basics/mitosis%20movie.htm


Cell cycle
Cell Cycle

?

Interphase

Prophase

?

?

Cytokinesis

Metaphase

?

Telophase

Anaphase

?

?


Interphase
Interphase

  • Stage 1: Interphase: Period before cell division occurs.

    • Cell is doing its J___ while growing (doubles in size)

    • Replicates (make a copy) its DNA

ob


Mitosis prophase
Mitosis : Prophase

Prophase:

Identical Chromatids p______. They are held together by a centromere

air up


Mitosis metaphase
Mitosis : Metaphase

Metaphase: Chromosomes line up in the m______

iddle


Mitosis anaphase
Mitosis : Anaphase

Anaphase: The centromeres split and the chromosomes are pulled a______

part


Mitosis telophase
Mitosis: Telophase

Telophase:

Each set of chromosomes are F___ away and a nucleus forms around them

ar


Cytokinesis
Cytokinesis

Cytokinesis

The cell membrane m______ inwards then pinches in two. This form 2 identical cells

oves


Dna deoxyribonucleic acid
DNA – Deoxyribonucleic Acid

  • Nitrogen Based Molecules (4 Letters of DNA Alphabet)

  • A pairs up with ____

  • G pairs up with ____

T

C


Cell cycle1
Cell Cycle

  • Stage 1: Interphase: Period before cell division occurs.

    • Cell doubles in size

    • Copy the DNA in its nucleus


Cell cycle2
Cell Cycle

  • Stage 2: Mitosis

    • One copy of the DNA is distributed into each of the two daughter cells


Cell cycle3
Cell Cycle

  • Stage 3: Cytokinesis

    • Cytoplasm divides


Cell cycle facts
Cell Cycle Facts

  • Some cells divides every 2 hours or less

  • Human Liver cells divides every 22 hours

  • There are about _____ million cells dividing in your body right now!!

  • Most cells divide but human b_____ cells never divide.

100

rain


Cell cycle facts1
Cell Cycle Facts

  • Some cells divides every 2 hours or less

  • Human Liver cells divides every 22 hours

  • There are about 100 million cells dividing in your body right now!!

  • Most cells divide but human brain cells never divide.



Dna replication
DNA Replication

  • DNA looks like a spiral staircase “double helix”

  • Two sides of DNA ladder are made up of sugar called deoxyribose and Phosphate

  • Adenine always pairs with Thymine

  • Cytosine always pairs with Guanine


Cancer
Cancer

  • What is Cancer

Mutation: Damage to the DNA


Cancer1
Cancer

tation

  • Cancer begins when mu________ disrupt the normal cell cycle causing cells to di_________ in an uncontrolled way

  • Eventually a tu______ (a mass of abnormal cells) forms.

vide

mor



Treating cancer
Treating Cancer

  • Surgery: Only effective during early stages

  • Radiation: Radiation also destroy healthy cells

  • Chemotherapy: Uses of drugs to kill cancer cells. Side effect: Also kills healthy cells.


Cancer prevention
Cancer Prevention

  • 2/3 of all cancer deaths are caused by tobacco use or unhealthful diets

  • Smoking is the main cause of lung cancer


Cancer prevention1
Cancer Prevention

  • Diet high in fat (fatty meats, fried foods) is harmful

  • Diet that includes a lot of fruits, vegetables and grain products can lower some type of cancer.


Differentiation
Differentiation

  • As cells differentiate, they become different from one another they also form groups made of other, similarly specialized cells. These groups then form tissues and organs


Differentiation1
Differentiation

  • As cells differentiate, they become diff_____ from one another.

errent


Stem cells
Stem Cells

  • Stem Cells respond to specific needs in the body by becoming a spec____zed ce___

iali

ll


Cell cycle quiz groups of 3 students
Cell Cycle Quiz: Groups of 3 students

Back of the card

Front of the card

Name of the Phase:

Mitosis: Prophase

Summary of the Phase:

Spindle Fiber, Centromere & Chromatids form.

  • Each student will create a card

  • The group will arrange their cards in order

  • Students in each group will quiz each other with their flash cards

  • Apprentices will come around and quiz and grade each of the group


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