B.1.43 Understand that and describe how organisms are influenced by a particular combination of living and nonliving components of the environment.


Molecules and Cells

7.4.4 Explain that the basic functions of organisms, such as extracting energy from food & getting rid of wastes, are carried out within the cell & understand that the way which cells function is similar in all organisms.

7.4.5 Explain how food provides the fuel & the building material for all organisms.

7.4.6 Describe how plants use the energy from light to make sugars from carbon dioxide & water to produce food that can be used immediately or stored for later use.

7.4.7 Describe how organisms that eat plants break down the plant structures to produce the materials & energy that they need to survive, & in turn, how they are consumed by other organisms.

7.4.12 Explain that white blood cells engulf invaders or produce antibodies that attack invaders or mark the invaders for killing by other white blood cells. Know that the antibodies produced will remain & can fight off subsequent invaders of the same kind.

8.4.5 Explain that energy can be transferred from one form to another in living things.

8.4.6 Describe how animals get their energy from oxidizing their food & releasing some of this energy as heat.

B.1.6 Show that a living cell is composed mainly of a small number of chemical elements - carbon, hydrogen, nitrogen, oxygen, phosphorous, and sulfur. Recognize that carbon can join to other carbon atoms in chains and rings to form large and complex molecules.

B.1.7 Explain that complex interactions among the different kinds of molecules in the cell cause distinct cycles of activities, such as growth and division. Note that cell behavior can also be affected by molecules from other parts of the organism, such as hormones.

B.1.9 Recognize and describe that both living and nonliving things are composed of compounds, which are themselves made up of elements joined by energy-containing bonds, such as those in ATP.

Developmental and Organismal Biology

B.1.14 Recognize and explain that communication and/or interaction are required between cells to coordinate their diverse activities.

B.1.15 Understand and explain that, in biological systems, structure and function must be considered together.

B.1.16 Explain how higher levels of organization result from specific complexing and interactions of smaller units and that their maintenance requires a constant input of energy as well as new material.

B.1.17 Understand that and describe how the maintenance of a relatively stable internal environment is required for the continuation of life and explain how stability is challenged by changing physical, chemical, and environmental conditions, as well as the presence of disease agents.

B.1.18 Explain that the regulatory and behavioral responses of an organism to external stimuli occur in order to maintain both short- and long-term equilibrium.

B.1.19 Recognize and describe that metabolism consists of the production, modification, transport, and exchange of materials that are required for the maintenance of life.

B.1.20 Recognize that and describe how the human immune system is designed to protect against microscopic organisms and foreign substances that enter from outside the body and against some cancer cells that arise within.


B.1.28 Illustrate that the sorting and recombination of genes in sexual reproduction results in a great variety of possible gene combinations from the offspring of any two parents. Recognize that genetic variation can occur from such processes as crossing over, jumping genes, and deletion and duplication of genes.


B.1.31  Describe how natural selection provides the following mechanism for evolution: Some variation in heritable characteristics exists within every species, and some of these characteristics give individuals an advantage over others in surviving and reproducing. Understand that the advantaged offspring, in turn, are more likely than others to survive and reproduce. Also understand that the proportion of individuals in the population that have advantageous characteristics will increase.

B.1.32 Explain how natural selection leads to organisms that are well suited for survival in particular environments, and discuss how natural selection provides scientific explanation for the history of life on Earth as depicted in the fossil record and in the similarities evident within the diversity of existing organisms.


7.4.2 Describe that all organisms, including the human species, are part of & depend on two main interconnected global food webs, the ocean food web & the land food web.

7.4.8 Understand & explain that as any population of organisms grows, it is held in check by one or more environmental factors. These factors could result in depletion of food or nesting sites and/or increased loss to increased numbers of predators or parasites. Give examples of some consequences of this.

7.4.9 Describe how technologies having to do with food production, sanitation, & disease prevention have dramatically changed how people live & work & have resulted in changes in factors that affect the growth of human population.

7.4.13 Explain that the environment may contain dangerous levels of substances that are harmful to human beings. Understand, therefore, that the good health of individuals requires monitoring the soil, air, & water as well as taking steps to keep them safe.

8.4.8 Describe how environmental conditions affect the survival of individual organisms & how entire species may prosper in spite of the poor survivability or bad fortune of individuals.

B.1.37 Explain that the amount of life any environment can support is limited by the available energy, water, oxygen, and minerals, and by the ability of ecosystems to recycle the residue of dead organic materials. Recognize, therefore, that human activities and technology can change the flow and reduce the fertility of the land.

B.1.38 Understand and explain the significance of the introduction of species, such as zebra mussels, into American waterways, and describe the consequent harm to native species and the environment in general.

B.1.41 Recognize that and describe how human beings are part of EarthÕs ecosystems. Note that human activities can, deliberately or inadvertently, alter the equilibrium in ecosystems.

B.1.45 Recognize that and describe how the physical or chemical environment may influence the rate, extent, and nature of the way organisms develop within ecosystems.



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