WARM-UP

Name the type of asexual reproduction shown in each picture and explain what happens during each type of reproduction.

DNA• Chemical that contains information for an

organism’s growth and functions

• Stands for deoxyribonucleic acid

When a cell divides, each new cell receives a full set

JAMES WATSON AND FRANCIS CRICK

• First model in 1953-double helix

CHROMOSOMES

• DNA is wrapped around proteins like thread around a spool

• Compacted into a structure called a chromosome

CHROMOSOMES

STRUCTURE OF THE CHROMOSOME

THE CELL

• What is the cell?• The smallest unit of any living thing.

WHAT IS CELL THEORY?

1) Every living thing is made up of one or more cells

2) Cells carry out the functions needed to support life

3) Cells come only from other living cells

QUESTION!

• What happens if you injure a cell in your body?• Ex. A Scrape.• What occurs in your body so that you don’t

die?!• Turn to your neighbor and discuss this

question.

CELL DIVISION

• How single celled organisms reproduce (Amoeba, paramecium, Euglena, and Volvox)

• In multicellular organisms, it is needed for growth, development, repair, and reproduction

THE CELL CYCLE• The life cycle of the cell

• Sequence of development (two main phases)

1) Interphase: Carries out its normal functions

2) Mitosis/Cytokinesis: Cell divides

THE CELL CYCLE

PHASES OF MITOSIS

• Prophase: Chromosomes condense

PHASES OF MITOSIS

• Metaphase: Chromosomes line up

PHASES OF MITOSIS

• Anaphase: Chromatids split

PHASES OF MITOSIS

• Telophase: Cell Pinches and divides

CYTOKINESIS

• Cytoplasm splits!

HOW TO REMEMBER THE CELL CYCLE OF LIFE!

• I Peed on the MAT or IPMATInterphaseProphaseMetaphaseAnaphaseTelophase

MEIOSIS

• Creates male and female sex cells (Sperm and Eggs)• Half of the chromosomes needed for a baby• Goes through each phase twice (prophase,

metaphase, anaphase, and telophase)

COMPARING MITOSIS AND MEIOSIS

MITOSIS FLIP BOOK

• For each phase, draw the chromosomes in the position that they would be in. • You will receive eight post-it notes, there

are four phases of Mitosis (PMAT). Make two sheets in your book for each phase so that it shows the progression.