Exam 1: Biology

In a eukaryotic cell, which of the following processes directly involves DNA?

When locust populations grow too large for an area, the individual locusts are crowded and food becomes scarce. In response to these conditions, some of the locusts leave the area and find a new habitat.Which of the following terms best applies to the response of the locusts that leave for the new habitat?

A single prokaryotic cell can divide several times in an hour. Few eukaryotic cells can divide as quickly. Which of the following statements best explains this difference?

A tomato plant in a greenhouse was found to be infected with tobacco mosaic virus. A few weeks later, nearby plants were alsofound to be infected with the virus. Which of the following best describes how the virus reproduced?

Which of the following statements describes the role of ATP in animal cells?

In one of the steps of the carbon cycle, a person exhales a molecule of carbon dioxide (CO2) into the atmosphere. Which of the following is most likely to happen next to the atom of carbon in this molecule?

Which of the following statements correctly matches a cell part with its function?

Ovalbumin is a protein found in eggs. Which of the following best describes the molecular structure of ovalbumin?

A hurricane sweeps across a small Caribbean island, killing 50 percent of the herbivore species on the island. Which of the following is the most immediate result?

Which type of cell must contain a mutation in order for the mutation to be passed from a woman to her offspring?

A builder is proposing a new housing development in an area of western Massachusetts. Construction of the housing development will destroy the wetland habitat in the area.Which of the following would be the most likely consequence of the wetland's destruction?

Which process do the animals in the food web use to convert energy from food into ATP?

Which of the following best describes the formation of a zygote?

Nerve cells use which of the following to communicate with each other?

Which of the following statements best explains why offspring produced by sexual reproduction often look similar to, but not exactly the same as, their parents?

Which of the following is incapable of reproducing outside a host cell?

In the past 100 years, levels of atmospheric carbon dioxide have increased as the result of the burning of fossil fuels. Other processes in the carbon cycle have absorbed some of the carbon released by this combustion.Which of the following most likely have absorbed excess carbon released by combustion?

In 2006, scientists discovered fossilized skeletons of an animal with several interesting features. Fossil evidence indicated that the animal not only had scales, fins, and gills, but also had lungs, a full set of ribs, and limb bones arranged to support the animal's weight. The illustration below shows what the animal, called Tiktaalik, probably looked like based on the fossil evidence.Which of the following statements best explains why the Tiktaalik fossils are an important piece of evidence for evolution?

In humans, the appendix is small and is not needed for digestion. In rabbits, the appendix is well developed and is used in the digestion of plant fibers.Which of the following provides the best scientific explanation for the presence of the appendix in both humans and rabbits?

Every year, monarch butterflies from Canada and the United States spend the winter in central Mexico. The dry and mild climate in Mexico allows the monarch butterflies to survive the winter. One winter, a week of storms caused freezing temperatures and 43 cm of snow in Mexico. What was the most likely impact of these storms on the monarch butterflies?