Q: Q: How do mammals generate heat? Read this paragraph and choose the correct option from the provided answers: Mammals generate heat mainly by maintaining a high rate of metabolism. Compared with the cells of other animals, the cells of mammals have more mitochondria. Mitochondria are the cell organelles that generate energy. Mammals may also produce little bursts of heat by shivering. Shivering occurs when many muscles all contract slightly at the same time. The muscle contractions generate a small amount of heat. Choices: - running around fast - eating spicy foods - maintaning low metabolism - maintaining high metabolism A:
A: maintaining high metabolism

Q: Q: Quantities have two parts: the number (how many) and what else? Read this paragraph and choose the correct option from the provided answers: Quantities have two parts: the number and the unit. The number tells "how many. " It is important to be able to express numbers properly so that the quantities can be communicated properly. Standard notation is the straightforward expression of a number. Numbers such as 17, 101.5, and 0.00446 are expressed in standard notation. For relatively small numbers, standard notation is fine. However, for very large numbers, such as 306,000,000, or for very small numbers, such as 0.000000419, standard notation can be cumbersome because of the number of zeros needed to place nonzero numbers in the proper position. Choices: - the motion - the member - the credit - he unit A:
A: he unit

Q: Q: All cells undergo what during a lifetime, but when this process is out of control, cancer results? Read this paragraph and choose the correct option from the provided answers: Cell division is just one of the stages that all cells go through during their life. This includes cells that are harmful, such as cancer cells. Cancer cells divide more often than normal cells, and grow out of control. In fact, this is how cancer cells cause illness. In these concepts, you will read about how cells divide, what other stages cells go through, and what causes cancer cells to divide out of control and harm the body. Choices: - cell transition - cell death - cell mutation - cell division A:
A: cell division

Q: Q: What term describes the long tube that connects the mouth to the anus? Read this paragraph and choose the correct option from the provided answers: The organs in Figure below make up the gastrointestinal (GI) tract. This is essentially a long tube that connects the mouth to the anus. Food enters the mouth and then passes through the rest of the GI tract. Food waste leaves the body through the anus. In adults, the GI tract is more than 9 meters (30 feet) long!. Choices: - metabolism tract - esophagus tract - lungs tract - gastrointestinal tract A:
A: gastrointestinal tract