Presentation on theme: "Reproduction The cells of all organisms contain a molecule called deoxyribonucleic acid (DNA). controls all cell activities. holds all the genetic information."— Presentation transcript:
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)
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