The Recent Rediscovery of the Pygmy Tarsier, Thought to Be

question 165

Multiple Choice

The recent rediscovery of the pygmy tarsier, thought to be extinct for the previous 85 years, suggests that

• A) the population of this species is secure.
• B) absolute confirmation of a species' extinction is extremely difficult.
• C) extinction can be established with certainty.
• D) this is probably the last individual of the species.
• E) a species can re-evolve after it becomes extinct.

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Definitions:

Actin

The protein of which microfilaments consist. Actin, together with the protein myosin, is responsible for muscle contraction.

Rough Endoplasmic Reticulum

A region of the endoplasmic reticulum associated with ribosomes, involved in the synthesis and processing of proteins.

Ribosomes

Cellular structures where protein synthesis occurs, reading mRNA and assembling amino acids into proteins according to the genetic instructions.

Microfilaments

Microfilaments are fine, thread-like protein fibers, composed largely of actin, that are a part of the cytoskeleton in eukaryotic cells, involved in cell movement and shape.