Cell Growth and Division

Cell Growth and Division



Cell Growth and Division

Chapters 10 & 11

Vocabulary :














I. ______Division

2 stages

A. ______- ______division

1. ______reproduction- reproduction ______exchanging ______information.

2. Source of new “______” cells in multicellular organisms; for growth and development.

B. ______- division of ______

C. Why divide?

1. The larger a cell becomes, the more ______the cell places on its ______.

2. The cell has trouble moving enough ______and wastes across the cell ______.

II. Forms of ______

A. ______- long ______DNA, found in cell during ______(not easily seen)

  1. ______- short, ______, made of DNA (can be seen during division)
  2. ______- individual chromosome, held together by a ______

III. Cell Cycle

A. ______phase

*______cell division

*cell ______[______phase]

*chromatin ______(DNA ______) [____ phase]

*______- present

[____ phase]

______begins [_____ phase]… division of ______


B. ______phase (first and longest phase)

*like ______(single chromosome) together; ______information on the sister chromatids (from DNA replication) = same genetic information on both

*______fibers form from ______

*nuclear membrane ______


C. ______phase

*______move to the ______ends of the cell

*spindle fibers ______to chromosome at the ______

*______line up on the “______” (middle)


D. ______phase

*sister ______are pulled ______, becoming ______chromosomes


E. ______phase

*nucleus ______

*chromosomes turn back into ______

*nuclear ______re-forms


F. ______

*division of ______and cellular ______

*2 ______cells with the ______genetic information

*nuclear membrane ______

Draw: Human mitosis

IV. Regulating the cell cycle

A. ______: ______that regulate the cell cycle in eukaryotic cells.

1. ______regulators- ______that respond to events ______the cell. (ex: ______


2. ______regulators- ______

that respond to events ______the cell. Stimulate

the ______and ______of cells. (ex: ______


B. ______cell growth

1. ______cells DO _____ respond to the signals that ______cell growth.

a. ______- mass of cells that can ______the surrounding tissue.

i. ______: ______-cancerous

ii. ______: ______tumor

b. ______- cancerous cells that break ______from a tumor and ______through out the body.

2. There are several causes of cancer including ______tobacco, ______(x-rays), ______light, and ______infections.

V. Cellular Division- ______

*Cellular division of ______cells (______)

  1. ______= sex cells
  2. Females: ______/______
  3. Males: ______

B. Chromosome Number

1. ______= 2N; cell has both sets of ______chromosomes *Homologous chromosomes; homo = ______, these chromosome pairs carry the same information

Example: Humans, 2N = ______

2. ______= N; ______the number of chromosomes

Example: Humans, N = ______

C. Phases of Meiosis- Part I

1. Starts with a ______cell (2N)

2. ______I: DNA ______, similar to mitosis

3. ______phase I:

a. ______chromosomes (chromosomes with the ______genetic information) form a ______

b. ______- a random ______of genes between homologous chromosomes occurs, causing ______.

Draw: Use 2 different colors

4. ______phase I: chromosomes line up on ______(same as mitosis)

5. ______phase I: ______separate

6. ______phase I: ___ cells, ______

D. Phases of Meiosis- Part ______

*start with __ cells that are 2N

1. ______phase II: ______as mitosis

2. ______phase II: chromosomes line up in the ______

3. ______phase II: Chromosomes pull ______; form individual ______

4. ______phase II:

*______division complete

*_____ cells that are genetically ______from the original

*each cell has the ______chromosome number


E. ______

1. Meiosis in males, occurs in ______

2. Results in ______sperm


F. ______

1. Meiosis in females, occurs in ______

2. Results in ____ egg/ovum and ______polar bodies


Human Heredity

Chapter 14-1

  1. Chromosomes
  2. Rod-shaped structure, found in ______, carries ______information
  3. ______chromosomes
  4. “______” pairs in ______cell
  5. Carry ______genetic information
  6. Similar ______and ______

C. ______

1. Traits for characteristics

2. ______of a gene

3. found at certain ______called a ______

Draw example:

D. ______alleles

1. dominant trait is “stronger” and therefore is ______(shown)

2. represented by ______letters

E. ______alleles

1. recessive trait only expressed if ______with another recessive gene (if it is with the dominant gene, you are a ______for the trait)

2. represented by ______case letters

F. ______: genetic information. “What genes say.”

1. BB- ______ “pure” ______genetic information from both genes

2. bb- ______ “pure” ______genetic information from both genes

3. Bb- ______/______genes at same locus for a single trait/carrier for recessive, but show ______trait

G. ______: how genes are expressed. “What you see/how look.”

Example: If D is dominant for dimples and d is recessive for no dimples then…

DD: ______


dd: ______

II. ______- picture of ______

A. ______- “______” chromosomes 44 individual: 22 pairs numbered 1-22

B. ______chromosomes- pair number 23 _____= female or ______= male

C. How are the cells obtained?

______- procedure that withdrawals ______from an expectant mother’s uterus. The fluid is analyzed to detect ______abnormalities or determine the sex of the baby.

III. Disorders

A. ______- too many

*______= Down’s Syndrome 3 chromosomes at spot 21

Cause: during ______in females the ______doesn’t separate correctly.

*other autosomal disorders

-Trisomy 17-18

-Trisomy 13-15

Causes ______mental retardation; die 2-3 months old

B. Sex Chromosomes

*______- Sterile Male

Cause: ______doesn’t separate during meiosis

Notation: ______, ______

*______Syndrome- Sterile female

Cause: ______doesn’t separate properly during meiosis

Notation: ______, ______

C. ______- chromosome breaks or is ______

*Cri-du-chat (Cry of the cat)

Cause: short arm of chromosome _____ is missing results in retardation.

Revised 2-12