The Evolution of Complex Multicellularity in Eukaryotes

question 24

Multiple Choice

The evolution of complex multicellularity in eukaryotes

• A)occurred only once,in the common ancestor of all eukaryotes.
• B)occurred only once,in the common ancestor of all multicellular eukaryotes.
• C)occurred only once,in the animal lineage.
• D)occurred independently in several eukaryotic lineages.

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Definitions:

Osteoarthritis

A degenerative joint disease characterized by the breakdown of joint cartilage and underlying bone, leading to pain and stiffness, primarily in the hips, knees, and thumbs.

Septic arthritis

An infection in a joint causing inflammation, usually caused by bacteria, but sometimes viruses or fungi, characterized by severe pain, swelling, and redness.

Psoriatic arthritis

An inflammatory arthritis affecting some people with psoriasis, characterized by joint pain, stiffness, and swelling.

Implicit memory

Memory that enables us to perform tasks without conscious awareness of these previous experiences.