Unit 2: Life and living (diversity)

3 Domains of Life

plants, animals, and neither (fungi, protists, bacteria).

Eukaryotic Cell

A type of cell found in multicellular organisms like plants and animals, characterized by having a nucleus.

Prokaryotic Cell

A type of cell found in unicellular organisms like bacteria and amoeba, lacking a nucleus.

The difference between vertebrates and invertebrates

Animals with backbones are vertebrates, while those without are invertebrates.

what is the Linnaean Classification

A system of classifying organisms based on shared similarities, with species grouped into genera, and so on.

what is a Clade

A group of species that includes an ancestor and all its descendants, representing a branch on the evolutionary tree.

Bacteria

Prokaryotic single-celled organisms that can be autotrophic or heterotrophic and play essential roles in ecosystems.

Archaea

Prokaryotic organisms that can adapt to extreme environments and produce methane as a waste product.

Protists

Eukaryotic organisms that do not fit into the plant, animal, or fungi categories, can be single-celled or multicellular species.

Ecology

The scientific study of interactions between organisms and their environment, focusing on ecosystems and their components.