DE.6. Life Processes
6.1. Structure/Function Relationship
Enduring Understanding: Living systems, from the organismic to the cellular level, demonstrate the complementary nature of structure and function.
6.1.F. The human body has systems that perform functions necessary for life. Major systems of the human body include the digestive, respiratory, reproductive, and circulatory systems. (Level: Essential)
6.3. Regulation and Behavior
Enduring Understanding: Organisms respond to internal and external cues, which allow them to survive.
6.3.A. Regulation of an organism's internal environment involves sensing external changes in the environment and responding physiologically to keep conditions within the range required for survival (e.g., increasing heart rate with exertion). (Level: Compact)
6.4. Life Processes and Technology Application
Enduring Understanding: The life processes of organisms are affected by their interactions with each other and their environment, and may be altered by human manipulation.
6.4.B. The functioning and health of organisms are influenced by many factors (i.e., heredity, diet, lifestyle, bacteria, viruses, parasites, and the environment). Certain body structures and systems function to protect against disease and injury. (Level: Important)
DE.7. Diversity and Continuity of Living Things
7.1. Reproduction, Heredity and Development
Enduring Understanding: Organisms reproduce, develop, have predictable life cycles, and pass on heritable traits to their offspring.
7.1.A. Reproduction is a characteristic of all living systems and is essential to the continuation of every species. (Level: Essential
7.1.C. Some organisms reproduce sexually involving two parents. Sexual reproduction results in offspring that have greater genetic diversity than those resulting from asexual reproduction. One-half of the offspring's genetic information comes from the ''male'' parent and one-half comes from the ''female'' parent. These genetic differences help to ensure the survival of offspring in varied environments. (Level: Essential)
7.1.D. In sexual reproduction after the egg is fertilized, each of the new cells in the developing organism receives an exact copy of the genetic information contained in the nucleus of a fertilized egg. (Level: Essential)
7.1.E. Organisms have different reproductive strategies to ensure their offspring's survival. Some organisms produce many offspring and provide little parental care. Other organisms produce few offspring and invest much time and energy in care of their offspring. (Level: Compact)
7.1.H. In humans, gender is determined by a pair of sex chromosomes. Females possess two X chromosomes; males an X and a Y chromosome. The sex of an embryo is determined by the sex chromosome found in the sperm cell. (Level: Important)