AP Bio Practice Test 2014

The lionfish is a venomous fish found primarily in the Red Sea and the Indian Ocean. In the 1990s, lionfish were accidentally released into the Atlantic Ocean, where they found abundant resources and favorable environmental conditions. Which of the following scenarios is the most likely to result in the lionfish having a major impact on the communities into which they were introduced?

• With no natural predators, the lionfish population will become very large.

• Some native species of invertebrates will develop a resistance to lionfish venom.

• Random mating will allow the lionfish population to reach Hardy-Weinberg equilibrium.

• A virus that specifically infects lionfish will become more prevalent.

Tags

NGSS.HS-LS2-6

NGSS.HS-LS4-2

NGSS.HS-LS4-5

Cell communication is critical for the function of both unicellular and muticellular eukaryotes. Which of the following is likely true of cell signaling?

• Cell signaling uses the highest molecular weight molecules found in living cells.

• Cell signaling has largely been replaced by other cell functions in higher mammals.

• Similar cell signaling pathways in diverse eukaryotes are evidence of conserved evolutionary processes.

• Cell signaling functions mainly during early developmental stages.

Ethylene is an organic compound produced by ripening fruits. In a controlled experiment, researchers found that ethylene gas stimulated the ripening process in newly harvested fruits. Which of the following describes the most likely connection between natural ethylene production and fruit ripening?

• As a result of metabolic inactivity, newly harvested fruits are unable to absorb ethylene gas from the atmosphere.

• Ethylene gas is a chemical signal through which ripening fruits trigger the ripening process in other fruits.

• Because of normal phenotypic variation, only some of the fruits in a given generation are expected to produce ethylene gas.

• The rate of gas production by ripening fruits is an indicator of the relative age of an ecosystem.