Essential knowledge 2.A.3: Organisms must exchange matter with the
environment to grow, reproduce and maintain organization.
a. Molecules and atoms from the environment are necessary to build new
Evidence of student learning is a demonstrated understanding of each
of the following:
1. Carbon moves from the environment to organisms where it is
used to build carbohydrates, proteins, lipids or nucleic acids.
Carbon is used in storage compounds and cell formation in all
2. Nitrogen moves from the environment to organisms where it is
used in building proteins and nucleic acids. Phosphorus moves
from the environment to organisms where it is used in nucleic
acids and certain lipids.
3. Living systems depend on properties of water that result from
its polarity and hydrogen bonding.
To foster student understanding of this concept, instructors can
choose an illustrative example such as:
• High specific heat capacity
• Universal solvent supports reactions
• Heat of vaporization
• Heat of fusion
• Water’s thermal conductivity
4.A.1: The subcomponents of biological molecules and their sequence determine the properties of that molecule.
4.B.1: Interactions between molecules affect their structure and function.
4.C.1: Variation in molecular units provides cells with a wider range of functions.
a) I will be able to identify the monomers and polymers of each of the four classes of organic molecules.
b) I will become familiar with the characteristics and properties of each of the classes and subclasses of organic molecules.c) I will be able to relate the organic molecules to my everyday life, diet and nutrition.