Q: When energy is captured or transformed, it inevitably degrades and becomes what less useful form of energy? Read this paragraph and choose the correct option from the provided answers: Physics also tells us that, although energy can be captured or transformed, it inevitably degrades, becoming heat, a less useful form of energy. This is why organisms require a constant input of energy; the work they must do uses up the energy they take in. Energy, unlike materials, cannot be recycled. The story of life is a story of energy flow its capture, transformation, use for work, and loss as heat. Choices: - chemical - temperature - motion - heat A:
heat

Q: What is the initial stage of scienetific investigations? Read this paragraph and choose the correct option from the provided answers: Scientific investigations involve the collection of data through observation, the formation and testing of hypotheses by experimentation, and analysis of the results that involves reasoning. Scientific investigations begin with observations that lead to questions. Choices: - asking questions - forming hypothesis - making predictions - observation A:
observation

Q: What type of compounds tend to have high melting points and boiling points? Read this paragraph and choose the correct option from the provided answers: Ionic compounds tend to have high melting points and boiling points. Choices: - liquid - particle - soluble - ionic A:
ionic

Q: What type of compounds make up the cells and tissues of organisms? Read this paragraph and choose the correct option from the provided answers: Biochemical compounds make up the cells and tissues of organisms. They are also involved in life processes, such as making and using food for energy. Given their diversity of functions, it's not surprising that there are millions of different biochemical compounds. However, they can be grouped into just four main classes: carbohydrates, proteins, lipids, and nucleic acids. The classes are summarized in Table below and described in the rest of this lesson. Choices: - hormonal compounds - productive compounds - organic compounds - biochemical compounds A:
biochemical compounds