Q: What do voltmeters measure? Read this paragraph and choose the correct option from the provided answers: 21.4 DC Voltmeters and Ammeters Voltmeters measure voltage, and ammeters measure current. A voltmeter is placed in parallel with the voltage source to receive full voltage and must have a large resistance to limit its effect on the circuit. An ammeter is placed in series to get the full current flowing through a branch and must have a small resistance to limit its effect on the circuit. Both can be based on the combination of a resistor and a galvanometer, a device that gives an analog reading of current. Standard voltmeters and ammeters alter the circuit being measured and are thus limited in accuracy. Choices: - temperature - amplitude - frequency - voltage A:
voltage

Q: The basal forebrain contains what that are important in learning and memory? Read this paragraph and choose the correct option from the provided answers: Many of the higher neurological functions, such as memory, emotion, and consciousness, are the result of cerebral function. The complexity of the cerebrum is different across vertebrate species. The cerebrum of the most primitive vertebrates is not much more than the connection for the sense of smell. In mammals, the cerebrum comprises the outer gray matter that is the cortex (from the Latin word meaning "bark of a tree") and several deep nuclei that belong to three important functional groups. The basal nuclei are responsible for cognitive processing, the most important function being that associated with planning movements. The basal forebrain contains nuclei that are important in learning and memory. The limbic cortex is the region of the cerebral cortex that is part of the limbic system, a collection of structures involved in emotion, memory, and behavior. Choices: - oxygen - ribosomes - atoms - nuclei A:
nuclei

Q: What is a biochemical compound that is a chain of amino acids called? Read this paragraph and choose the correct option from the provided answers: Proteins are biochemical compounds that consist of one or more chains of amino acids. Proteins have many different functions. For example, some are enzymes, and some are hormones. Choices: - DNA - lipids - hormones - proteins A:
proteins

Q: The sun emits energy in the form of what? Read this paragraph and choose the correct option from the provided answers: Figure 5.10 The sun emits energy in the form of electromagnetic radiation. This radiation exists in different wavelengths, each of which has its own characteristic energy. Visible light is one type of energy emitted from the sun. Choices: - mechanical radiation - particles radiation - microwave radiation - electromagnetic radiation A:
electromagnetic radiation