Classification and reclassification: genetic evidence | Starter Quiz | Oak National Academy

Which classification group would contain the most organisms?

• domain

• species

• kingdom

• family

• class

Answer explanation

The domain is the broadest classification group and species is the most specific.

Match the names of the three domains to the organisms that are classified into them.

• archaea

• animals, plants, fungi and protists

• eukaryota

• true bacteria

• bacteria

• extremophiles that live in extreme environments

Answer explanation

The eukaryota domain include animals, plants, fungi and protists, the bacteria domain includes true bacteria and the domain archaea includes extremophiles.

What is the primary characteristic that distinguishes eukaryotic cells from prokaryotic cells?

• cell membrane

• membrane bound nucleus

• cytoplasm

• cell wall

Answer explanation

Eukaryotic cells have membrane bound sub-cellular structures, such as a nucleus.

What major advancement did Carl Woese contribute to the field of classification?

• introduction of the binomial naming system

• discovery of the structure of DNA

• development of the three-domain system

• formulation of the theory of evolution

Answer explanation

Carl Woese redefined classification to include the three domains of life.

What are the three domains proposed by Carl Woese in his classification system?

• bacteria

• archaea

• animals

• eukaryota

• protists

Answer explanation

The three domains as proposed by Carl Woese are eukaryota, bacteria and archaea.

How did Linnaeus classify organisms in his classification system?

• based on genetic similarity and differences

• based on their ecological niche

• based on their observable and measurable characteristics

Answer explanation

Linnaeus classified organisms based on their observable and measurable characteristics.