AP BIOLOGY

Detailed explanation-1: -A unit of heat energy used in thermochemistry is the thermochemical calorie, equal to 4.184 joules. It is commonly used as the unit for heat capacities, latent heats, and heats of reaction.

Detailed explanation-2: -Heat is typically measured in Btu, calories or joules. Heat flow, or the rate at which heat is transferred between systems, has the same units as power: energy per unit time (J/s).

Detailed explanation-3: -The amount of heat needed to raise the temperature of 1 gram of water by a degree is measured in calories. Here, we can say that the statement is true. According to the given statement, heat is measured in terms of calories, which is a true statement.