Hmm, learning about this what a while back, but i would say (1)
It requires energy when a substance must travel against a concentration gradient through the membrane
The Correct answer is C.
The Island of Hispaniola is the second largest island in the Caribbean, at 29, 237sq miles. Haiti occupies about 1/3 of the Island while the Dominican Republic controls the balance of the land.
Christopher Columbus claimed Hispaniola in 1492, declaring it "the most beautiful island in the world". It later became the launching base for the Spanish conquest of the Caribbean, as well as the American mainland.
The western third of the island became known as Haiti in 1804 and while the remainder became known as the Dominican Republic in 1844.
<span>The word promixodistal comes from Latin terms meaning "away from the center". This refers to the stage of development where growth occurs from the center of the body to the extremities. For example, an infant learns to use its arms and legs first (to crawl), then its hands (to reach and grasp), and finally its fingers (to pick up and use objects).</span>
The germ theory of disease states that many diseases are caused by microorganisms.
