Domains & Cell Specialization: Question Preview (ID: 3474)

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Most of the organisms alive on Earth today are:
a) Unicellular
b) Multicellular
c) Eukaryotes
d) Animals

Prokaryotic organisms that are found in extreme environments belong to the domain
a) Prokarya
b) Eukarya
c) Bacteria
d) Archaea

The domain, Eukarya, is made up of:
a) only unicelluar organisms.
b) only multicellular organisms.
c) only prokaryotes.
d) unicellular and multicellular organisms.

Multicellular organisms have specialized cells that perform specific jobs. Blood cells are specialized. What is their job?
a) They carry oxygen to all parts of the body.
b) They help fight infection.
c) They carry oxygen and help fight infection.
d) They make proteins.

What is the highest level of organization in living things?
a) Cell
b) Tissue
c) Organ
d) Organism

What is an organ?
a) Tissues of the same type working together to perform a job.
b) Different types of tissues working together to perform a job.
c) Cells that work together to perform a job.
d) A musical instrument played in a band.

True or False: Unicellular organisms have specialized cells.
a) True
b) False

True or False: Scientists use models to learn about cells and their parts.
a) True
b) False

Which of the following shows the levels of organization from largest to smallest?
a) Cells - tissues - organs - organ systems - organism
b) Organ systems - organism - organs - cells - tissues
c) Organism - organ systems - organs - tissues - cells
d) Tissues - cells - organs - organ systems - organism

Which domain would a unicellular organism with a nucleus belong to?
a) Prokarya
b) Archaea
c) Bacteria
d) Eukarya

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