Objective 1.1 Compare the structures and life functions of single-celled organisms that carry out all of the basic functions of life including: SWBAT define and explain the following terms: Organism, Euglena, Paramecium, function, Amoeba, Volvox SWBAT describe and compare the structures and functions of single celled organisms.

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

What do the following single celled organisms have in common? AMOEBA PARAMECIUM EUGLENA VOLVOX

Comparisons of Single-celled Organisms Please write down anything that is in RED in your own words. These are the important concepts.

Amoeba Move by cytoplasmic streaming Surrounds food and engulfs it using pseudopods, it is then enveloped, stored, and digested in vacuoles

Amoeba Can change shape Heterotrophic Eukaryotic – contain one or more nuclei Eats bacteria, algae, and other protozoa Reproduce asexually Can become dormant Can survive forcible division

Euglena Move by flagellum Known for a unique feature—eye spot Contain chloroplasts Common in fresh water Do not contain a cell wall

Euglena Found in calm fresh and Used as a model organism in the lab salt water Used as a model organism in the lab Autotrophs – get energy via photosynthesis Can also get nourishment heterotrophically like animals Have features of both plants and animals > Kingdom Protista

Euglena Heterotrophic feeding surrounds particle of food and absorbs it Autotrophic feeding produces sugars via photosynthesis where sufficient sunlight is present Does not contain a cell wall Moves by use of a flagella

Paramecium Most complex and specialized of the protists Moves by cilia (hairlike projections)

Paramecium Can move about 12 body lengths per second Shape of a pill capsule Heterotrophic Relatively large Common in pond scum and freshwater Contain two nuclei (macro and micro)

Paramecium Uses cilia to sweep food into the oral groove Feeds on micro-organisms like bacteria, algae, and yeasts Stiff elastic membrane gives it shape and is covered in cilia that allow it to spiral through water

Volvox A sphereical colony of ciliates may include up to 50,000 cells Contain chloroplasts Move and act as one multi-cellular organism Can survive independent of the colony

Volvox Type of green algae Lives in lots of freshwater habitats – ponds, ditches, puddles, lagoons Colonies use flagella to swim Cells have eyespots Make food via photosynthesis Autotrophic

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

Which single-celled organisms moves by flagellum. A. Euglena B 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 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 D. Volvox

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

Which types of single-celled organisms can have chlorophyll. A Which types of single-celled organisms can have chlorophyll? A. Euglena and Amoeba B. Amoeba and Paramecium C. Paramecium and Volvox D. Euglena 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 digests the food? What organelle engulfs food? A. cytoplasm B. pseudopods C. vacuoles D. nucleus What organelle digests the food? A. cytoplasm B. pseudopods C. vacuoles D. nucleus

B. pseudopods C. vacuoles

Name the organelles located at A. and B.

A. nucleus B. cytoplasm