Q: A substance that displays different colors when in the presence of an acid or a base is called what? Read this paragraph and choose the correct option from the provided answers: An acid-base indicator is a substance that displays different colors when in the presence of an acid or a base. How does that work? An indicator is a weak acid that ionizes within a known pH range, usually about 2 pH units. We can represent the protonated form of the indicator molecule as HIn and the deprotonated form as In . The following equilibrium exists for the indicator. Choices: - pH scale - reactor - litmus test - an acid-base indicator A:
an acid-base indicator

Q: During cellular respiration, carbons from the glucose molecule are changed back into what gas? Read this paragraph and choose the correct option from the provided answers: In biological systems, matter is continuously changing states as well. For example, carbon in the form of the gas carbon dioxide is changed into glucose, a solid. This change, of course, occurs during photosynthesis. During cellular respiration, carbons from the glucose molecule are changed back into the carbon dioxide gas. Choices: - deformation dioxide - carbon monoxide - liquid dioxide - carbon dioxide A:
carbon dioxide

Q: The body does not exist in isolation. there is a constant input of water and electrolytes into the system. while osmoregulation is achieved across membranes within the body, excess electrolytes and wastes are transported to the kidneys and excreted, helping to maintain this? Read this paragraph and choose the correct option from the provided answers: The body does not exist in isolation. There is a constant input of water and electrolytes into the system. While osmoregulation is achieved across membranes within the body, excess electrolytes and wastes are transported to the kidneys and excreted, helping to maintain osmotic balance. Choices: - physical balance - vacuum balance - nucleic balance - osmotic balance A:
osmotic balance

Q: What type of intense storm is a system of winds that rotate around a low pressure center, resulting in swirling air that rises and cools to create clouds and precipitation? Read this paragraph and choose the correct option from the provided answers: Cyclones can be the most intense storms on Earth. A cyclone is a system of winds that rotate around a low pressure center. The swirling air rises and cools. This creates clouds and precipitation. Choices: - hurricane - drought - monsoon - cyclone A:
cyclone