Reproduction

The cells of all organisms contain a molecule

called deoxyribonucleic acid (DNA). controls all cell activities. holds all the genetic information to carry on all life

activities. is passed on to offspring when organisms

reproduce.

(offspring is a new organism produced by

one or more parents)

Organisms make other organisms

like themselves through the process

of reproduction.

Two Main Types: Asexual Reproduction Sexual Reproduction

when a single parent produces offspring that are the same as the parent

Microorganisms are single-celled organisms that

reproduce through asexual reproduction

Asexual Reproduction

Euglena Single-celled organisms

Asexual reproduction

Flagella (whip like

thread that propel the

euglena through water)

Amoeba Single-celled organisms

Asexual reproduction

Pseudopodia “false feet”

are extensions of

the amoeba’s body,

used for movement and

eating.

Paramecium Single-celled organisms

Asexual reproduction

Cilia (hair like structures

that beat back and forth

to move it forward)

Bacteria

round shape

Staphylococcus aureus

(skin infection)

rod shape

Salmonella

(food poisoning)

Single-celled organisms

Asexual reproduction

spiral shape

Lyme disease

(tick bites)

Three Types

Is when two parents produce offspring that share characteristics of both parents.

Most multi-cellular organisms reproduce through sexual reproduction.

Sexual Reproduction

Sperm Cell – male gamete

Egg Cell – female gamete (the largest

cell in the human body).

One parent Offspring identical to

parent Many offspring Takes place in single-

celled organisms Example: Paramecium

Asexual Reproduction vsSexual Reproduction

Two parents Offspring have

characteristics of both parents (diverse-different)

Few offspring Takes place in multi-

celled organisms Example: Cats