Practice Exam Answers

Choose the correct answer from each drop-down menu to complete the statement.

How does conservation affect biodiversity?

Which statement accurately describes the applications and limitations of absolute-age dating methods?

The fossil record shows that the average size of black bears was large during cold glacial periods and got smaller during warmer time periods. What is this an example of?

What is most likely to happen to a population of mice that becomes isolated on an island?

A population of wolves in Wyoming experienced a rapid decline. Scientists found that 20 wolves died from rabies, 15 wolves died from mange (a parasitic mite), and 10 wolves died from natural causes. Wyoming experienced a recent drought, and many populations, including deer, bison, and bear, have diminished in the past year. What is best described in this scenario?

A family released their pet fish family into a local pond. The fish had no known local population. The impact of the fish on the ecosystem is not yet known. Which term would best define the fish added to the pond?

Where does a peptide bond form?

Variations within a species are an important part of Charles Darwin's theory of evolution. Which example can be explained by individual variation?

Which animals form a eusocial society?

A muskrat population is growing exponentially. What might cause this population to enter logistic growth?

Changes in the gene pool can occur due to various mechanisms. In 1989, a large oil spill occurred in Prince William Sound, Alaska, when the Exxon Valdez oil tanker ran aground. Approximately 11 million gallons of oil were spilled and spread 1,300 miles along the Alaskan coastline. The damage from the oil spill affected thousands of animals in the area, including killer whales, harbor seals, sea otters, fish, and sea birds. Which mechanism most likely affected the gene pools of the organism populations in the areas around the oil spill?

In rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found lower than ammonite fossils. What can be determined from this information?

How does a catalyst influence a chemical reaction?

Which statement best distinguishes the light-dependent (L-D) reactions from the light-independent (L-IND) reactions?

What would happen to the size of the herbivore population if the producer population decreased?

Move each answer to the correct box to identify whether it is an effect of a marine transgression or regression.

Which type of mass movement happens when dissolution destabilizes boulders on a steep cliff?

A doctor suspects that one of her patients has a deficiency in one of the six key elements found in living organisms. He has low energy and extremely weak, soft bones. Based on this information alone, which nutrient supplement will she most likely prescribe?

A feature in the early hominid was her apelike shoulders and forelimbs, but a pelvis that indicated that most of her body weight lay above her pelvis. Which best describes the fossil?

A biologist is writing a report about a group of rattlesnakes that all live in the state of Florida. All rattlesnakes in this group can breed with one another and produce offspring that can reproduce together. The report includes statistics about the number of these rattlesnakes, their breeding rate, and the ranges of their sizes and other traits. In this report, the biologist is describing

Match each part of the water molecule or related concept with its correct description.

What do all cellular activities in living organisms use as a source of energy?

Humans affect the carbon cycle in many ways through the use of fossil fuels, clear cutting of forests, and controlled burns. Which process can help counteract these human interactions?

Which statement correctly explains whether more ATP is found in muscle cells or bone cells?

Which statement best describes the process of chemiosmosis and the direct result of its occurrence?

Sheela wants to demonstrate the importance of photosynthesis to plants and the other living organisms that eat plants. She models the process of photosynthesis that is specifically involved in the production of sugars. Which process in the light-independent reactions of photosynthesis is she modeling?

Which statement correctly describes what proteins, lipids, and glycogen have in common?

What would most likely happen to plants if they did not have a waxy outer coating?

In which part of the body is glycogen stored?

According to the cladogram, which characteristic was used to separate bony fish from amphibians?