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 amoebas 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 Two parents Offspring have characteristics of both parents (diverse- different) Few offspring Takes place in multi- celled organisms Example: Cats