Question

Name these separate eukaryotic kingdoms and list descriptive words and examples for each. Use the bolded vocabulary words correctly: prokaryote, eukaryote, autotroph, heterotroph, unicellular organism, and a multicellular organism.

a) Prokaryote: Organism without a true nucleus; example: bacteria.
b) Eukaryote: Organism with a true nucleus; example: plants.
c) Autotroph: Organism that produces its own food; example: algae.
d) Heterotroph: Organism that relies on external sources for nutrition; example: animals.

Which term describes an organism without a true nucleus?

a) Autotroph
b) Prokaryote
c) Heterotroph
d) Eukaryote

Answer 1

The eukaryotic kingdoms include the diverse Protista, decomposing Fungi, photosynthesizing Plantae, and consuming Animalia within the domain Eukarya. Prokaryotes, characterized by the lack of a true nucleus, fall under the domains Bacteria and Archaea. The answer to the question is b) Prokaryote.

Step-by-step explanation:

Eukaryotic kingdoms are part of the domain Eukarya and include several groups with cells that have nuclei and other membrane-bound organelles. These kingdoms are:

• Protista: A diverse kingdom that includes unicellular and multicellular organisms, which can be autotrophs, like algae, or heterotrophs, such as the parasite Plasmodium.
• Fungi: Mostly multicellular heterotrophs that decompose organic matter, like mushrooms.
• Plantae: Multicellular, predominantly autotrophic organisms, like flowering plants, that use photosynthesis.
• Animalia: Primarily multicellular heterotrophs that consume organic material, such as insects and mammals.

In contrast, the term prokaryote corresponds to the domains Bacteria and Archaea made up of predominantly unicellular organisms without a true nucleus. Therefore, the correct answer to the given question, "Which term describes an organism without a true nucleus?" is b) Prokaryote.