Objective Compare the structures and functions of the

Objective Compare the structures and functions of the following singlecelled organisms: Euglena Amoeba Paramecium Volvox

Essential Question: What are the characteristics of the following single-celled organisms? Euglena Amoeba Paramecium Volvox

Euglena • Environment: fresh and salt water • Movement: flagella (tail-like) • Food: – Heterotrophic- engulfs full cell and absorb them. – Autotrophic- make their own food using chlorophyll. • Reproduction: asexual • Additional Organelle: – Eye spot- senses light and guides Euglena in its direction

Euglena

Amoeba • Environment: Fresh and salt water • Movement: Cytoplasmic Streaming – Changing shape • Food: heterotrophic – They surround their prey and engulf it with a Pseudopodium(false foot) • Reproduction: asexual • Additional Information: Changes shape

Amoeba Eating Paramecium

Paramecium • Environment: Fresh water • Movement: Cilia (hair-like) – Bend and straighten helping propel organism through water. • Food: Heterotrophic – Uses cilia to sweep the food into the cell. • Reproduction: sexual and asexual • Additional Info: Most complex and specialized

Paramecium

Volvox • Environment: freshwater, unicellular organism called ciliates living in a colony together • Movement: Each cell in the colony has 2 flagella – Eyespots: sense and guide towards light • Food: – Heterotrophic • Eat algae – Autotrophic • makes its food through photosynthesis • Reproduction: asexual and sexual – daughter colonies (offspring) mature and the Volvox bursts open to release them.

Volvox

Euglena Amoeba Paramecium Volvox Environment Fresh and salt water Fresh water Movement Flagella Cytoplasmic streaming Cilia Flagella (tail-like) (hair-like) (tail-like) (changing shape) Food Autotrophic and Heterotrophic Autotrophic and Heterotrophic Additional Information Eye spot Pseudopod Most specialized and complex Lives in colonies, Eyespots Diagram (light sensitive) (False foot)

Quiz Be sure you have these in your notes!!!

Which single-celled organisms moves by flagellum? A. Euglena B. Amoeba C. Paramecium D. Volvox A. Euglena

Which single-celled organism moves by cilia or hairlike projections? A. Euglena B. Amoeba C. Paramecium D. Volvox C. Paramecium

Which single-celled organism uses pseudopods to surround and engulf their food? A. Euglena B. Amoeba C. Paramecium D. Volvox B. Amoeba

Which single-celled organism is a colony of ciliates of which some contain chlorophyll? A. Euglena B. Amoeba C. Paramecium D. Volvox

Which single-celled organism has a unique feature of an eye spot? A. Euglena B. Amoeba C. Paramecium D. Volvox A. Euglena

Which single-celled organism moves by cytoplasmic streaming? A. Euglena B. Amoeba C. Paramecium D. Volvox B. Amoeba

Which types of single-celled organisms may contain chlorophyll? A. Euglena and Amoeba B. Amoeba and Paramecium C. Paramecium and Volvox D. Euglena and Volvox

Which organism appears in the photos? • paramecium

Look at the picture. Be able to answer the questions on the following slide!

What organelle engulfs food? A. cytoplasm B. pseudopods C. vacuoles D. nucleus What organelle digests the food? A. cytoplasm B. pseudopods C. food vacuole D. nucleus

B. pseudopods C. food vacuoles

A. B. Name the organelles located at A. and B.

A. Is the nucleus B. Is the cytoplasm