Lab 2 Review: Tree of Life, Classification, Algae & Protozoa

Who created the first naming system, binomial nomenclature?

Carl Linnaeus

How should the name of an organism be correctly written using binomial nomenclature?

The genus name is capitalized and italicized, followed by the species name in lowercase and italicized.

Who developed the Tree of Life?

Carl Woese

What type of scientific data is used to place organisms on the Tree of Life?

Genetic data and evolutionary relationships.

What are the three domains on the Tree of Life?

Bacteria, Archaea, and Eukarya.

What defines prokaryotic cells?

Cells without a nucleus or membrane-bound organelles.

What defines eukaryotic cells?

Cells with a nucleus and membrane-bound organelles.

Give an example of a prokaryotic cell.

Bacteria.

Give an example of a eukaryotic cell.

Animal or plant cells.

Which domains contain prokaryotic cells?

Bacteria and Archaea.

Which domain contains eukaryotic cells?

Eukarya.

What are the levels of classification in the taxonomic system in order?

Domain, Kingdom, Phylum, Class, Order, Family, Genus, Species.

What was the brief history of how Carl Woese developed the Tree of Life?

He used genetic sequencing to identify the domain Archaea as distinct from Bacteria and Eukarya.

What are the characteristics of algae?

Eukaryotic cells, can be unicellular or multicellular, found in various habitats, and reproduce through sexual or asexual methods.

How do algae make their food?

Through photosynthesis, using sunlight.

Identify the classification for Volvox.

Domain: Eukarya, Kingdom: Plantae, Subkingdom: Green plants, Genus: Volvox.

Define cellulose.

A complex carbohydrate that forms the cell wall of plants.

Define photoautotrophic.

Organisms that produce their own food using light energy.

What are the characteristics of protozoa?

Eukaryotic cells, usually unicellular, found in various habitats, and reproduce through asexual or sexual means.

Define heterotrophic.

Organisms that obtain their food by consuming other organisms.

Define trophozoite and cyst.

Trophozoite is the active, feeding stage of protozoa; cyst is the dormant, resistant stage.

How are protozoans classified?

Based on their movement, reproduction, and genetic data.

Identify the classification for Amoeba.

Domain: Eukarya, Kingdom: Protista, Subkingdom: Protozoa, Phylum: Amoebozoa, Genus: Amoeba.

What is the mode of transmission for Trypanosoma brucei?

Transmitted by the tsetse fly.

What are the symptoms of Toxoplasma gondii infection?

Flu-like symptoms, but can be severe in immunocompromised individuals.

What is the treatment for Plasmodium infection?

Antimalarial medications such as chloroquine or artemisinin.