Questions Refer to the Map Below

question 60

Multiple Choice

Questions refer to the map below.
-Which of the following is an accurate statement concerning the voyages shown on the map above?

• A) Drake was the only voyager who circumnavigated the globe in the sixteenth century.
• B) In the fifteenth century, Spain dominated transatlantic exploration, while Portugal explored the coast of Africa.
• C) Spain and Portugal were the only nations who sponsored transatlantic voyages in the fifteenth century.
• D) Dutch sailors dominated the Indian Ocean trade routes in the sixteenth century.

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Definitions:

Tyrosine Kinase

An enzyme that catalyzes the transfer of a phosphate group from ATP to the amino acid tyrosine on a protein, playing a critical role in signal transduction pathways.

Sodium Gate

A protein channel in cell membranes that allows sodium ions to pass through, playing a key role in the generation and propagation of nerve impulses.

Ligand-Gated

Referring to ion channels that open in response to the binding of a chemical messenger (ligand), such as a neurotransmitter.

Acetylcholine

A neurotransmitter involved in many functions including muscle movement, heart rate, and the modulation of brain activity.