How do animals obtain the nitrogen they use to make proteins and nucleic acids? a. by consuming plants or other animals b. by absorbing ammonia from bacteria growing in the roots of plants c. by breathing the nitrogen present in the atmosphere d. by absorbing nitrogen found in the soil

The human body maintains a temperature of around 98.6 degrees at all times. enzymes are involved in almost every chemical reaction in the body. which of the following describes the connection between these two statements? a. enzymes function best at a specific temperature. b. the body needs to be warm to prevent hypothermia. c. the body is kept relatively warm to prevent too much enzyme action. d. there is no connection between the two statements.