Biology Basic Biochemistry Outline,09

Biology

Purpose: 1. 2. 3. 4.

Basic Biochemistry To review the basics of atomic structure and bonding To investigate the concepts of pH and water chemistry. Apply LIFE TRAIT: Complex chemical compounds Apply THEME: Interactions & systems, homeostasis, energy

Essential Concepts/Knowledge: 1. The chemical structure of atoms as related to pH and water properties. 2. How ecosystems are influenced by the chemical environment. 3. Processes involved in the water cycle.

A. Chemical Structure 1. Definitions 2. Atoms & elements a. atomic structure b. diagramming atoms c. Isotopes 3. Chemical bonds a. ionic bonding b. covalent bonding c. chemical reactions B.

C.

Water-A Key molecule 1. Essential properties 2. Water cycle 3. transport of water in plants a. xylem vs phloem b. stomata, cuticle and adaptations c. review of roots Acids, bases and pH-demolab a. soil pH and plant nutrients b. buffers and homeostasis c. ulcers and heartburn

ASSIGNMENTS Chap 6 Sec.6.1 p. 175: #1-4,12 Sec.6.2 p. 176: #20 Sec.6.3 p. 165: #1 p. 176: #26,29, 31 - 36 Chap 22 Sec.22.2 p.640: Fig22.9-Sequence p. 647: #3,5 p. 656: #22 STP p. 658-9: #7,13 Worksheets

You should now be able to: ___1. Diagram an atom. ___2. Distinguish between ionic and covalent bonding ___3. Discuss the properties of water and their importance to life. ___4. Apply pH indicators to interpret lab data. ___5. Trace the water cycle through the environment, including plant structures. ___6. Explain the impact of pH on plants ability to access nutrients. ___7. Explain the importance of buffers in ecosystems and living organisms on pH.