PSB EXAM PRACTICE QUESTIONS AND ANSWERS

What are the factors that differ for potential and kinetic energy? - Answer- Activity - in motion or in storage What happens when a small amount of soap is added to hard water? - Answer- A scum is formed Which of the following properties is considered a physical property? - Answer- Boiling point Semicircular canals are thought to be most sensitive to which of the following? - Answer- Gravity Which of the following kinds of radiation is the most penetrating? - Answer- Gamma The growth of green plants toward light is related most specifically to the distribution in the plant of: - Answer- Auxins - a class of plant hormones (plant growth or regulators) with some morphogen-like characteristics. Auxins have a cardinal role in coordination of many growth and behavioral processes in the plant's life cycle and are essential for plant body development. A person with a fever would be expected to have: - Answer- An increased pulse rate The principle way in which forests help to prevent soil erosion is that: - Answer- Forest floors absorb water The reaction of the body to stress includes which of the following? - Answer- Secretion of adrenalin Which factor in the environment of an organism causes it to react? - Answer- Stimulus Which term includes all others? Organ Tissue System Organism - Answer- System The process responsible for the continuous removal of carbon dioxide from the atmosphere is: - Answer- Photosynthesis Of the following, the marsupial native to the United States is: - Answer- Opossum n organ that functions as both an endocrine and an exoenne gland is the: - Answer- P