BISC 100 Lecture Notes - Lecture 3: Fluorine, Sodium Chloride, Electronegativity

• School: Simon Fraser University
• Department: Biological Sciences
• Course: BISC 100
• Professor: Mala Chandani Fernando

Document Summary

Meso (cid:373)ea(cid:374)s (cid:862)(cid:373)iddle(cid:863), ph(cid:455)ll (cid:373)ea(cid:374)s (cid:862)(cid:272)ell. (cid:863) We have the equivalent of chlorophyll which is hemoglobin. Atoms get together to make actin and myosin in animals. Collection of muscle cells result in tissues. All of this starts with an atom. Based on different characteristics elements can be grouped. For the periodic table, the y axis has the number of electron shells, whereas the x axis consists of the group number. We do(cid:374)"t ha(cid:448)e to re(cid:373)e(cid:373)(cid:271)er the per(cid:272)e(cid:374)tage of ea(cid:272)h ele(cid:373)e(cid:374)t i(cid:374) our (cid:271)od(cid:455). Carbon has the particular structure to make many molecules. Potassium is important for nerve conduction and heart health. Sodium and potassium balance the positive charge in our bodies. Too little or too much of the trace elements is bad for us. Iron is important for transporting oxygen around our body; iron-deficiency results in fatigue. The difference between hydrogen and all other elements is that hydrogen does not have any neutrons.