Exam 1: Biology

Fireflies produce light inside their bodies. The enzyme luciferase is involved in the reaction that produces the light. Scientists have isolated the luciferase gene.A scientist inserts the luciferase gene into the DNA of cells from another organism. If these cells produce light, the scientist knows that which of the following occurred?

Which of the following best describes the result of a mutation in an organism's DNA?

A person who is cold shivers to generate body heat. Which of the following lists the primary body systems that interact to maintain homeostasis in this situation?

Shelly and Jason are siblings, but Shelly looks like their father while Jason looks like their mother. Which of the following statements best explains the difference in Shelly's and Jason's features?

On the Galápagos Islands, finches adapted over time to different food sources through changes in their beak structure. Which of the following most likely resulted from the finches' beak structure adaptations?

Which of the following is a central role of carbon in the chemistry of living organisms?

Scientists have found geysers on one of Saturn's moons. The geysers release water vapor containing complex organic compounds, which may indicate the presence of life. Which of the following elements is most likely abundant in the organic compounds in the water vapor?

During DNA replication, the wrong nucleotide was inserted in the DNA sequence. Which of the following terms describes this situation?

In sexual reproduction, what is the source of the genetic material in a zygote?

Which type of milk, per serving, will theoretically yield a greater amount of ATP in the human body, and what is the reason for this?

If an animal cell is placed in distilled water, it will swell and burst. The bursting of the cell is a result of which biological process?

Which of the following statements best explains why oxygen diffuses from the alveoli into the blood?

Which of the following describes plant cells but not animal cells?

Lemurs' bodies are adapted to efficiently store energy for times when food is scarce. This adaptation may help to explain how lemur ancestors survived the trip across the Mozambique Channel from mainland Africa to Madagascar. Which of the following types of molecules are primarily used for long-term energy storage in the lemur?

Which of the following organs removes extra water from the blood to keep the amount of fluid in the bloodstream at the proper level?

Which of the following is a body system response that adjusts body temperature when it is higher than normal?

Which of the following cell structures carries out the process represented by the arrows labeled "2" in the diagrams?

In phenylketonuria (PKU), an enzyme that converts one amino acid into another does not work properly. Which of the following is the most likely cause of this genetic condition?

In which of the following ways are photosynthesis and cellular respiration alike?

Some cells, such as human nerve and muscle cells, contain many more mitochondria than do other cells, such as skin cells. Why do some cells have more mitochondria than others?