Anatomy Ch 2.txt

matter is the stuff in the universe occupying space, and has mass--energy puts matter into motion and has no mass or space

when energy is doing work /moving objects

inactive or stored energy

stored in bonds of chemical substances, bonds broken, potential energy is released and becomes kinetic

movement of charged particles, when changed particles move across all membranes 

energy directly involved with moving matter-(ex. moving legs)

travels in waves,(ex. electromagnetic spectrum)

p+    protons have a positive charge

n0   neutrons have a neutral charge

e-   electrons have a negative charge

B) equal

the number of protons

• the sum of protons and neutrons so
• (ex. He=2+2=4)

same number of protons and electrons but a different number of neutrons

heavier isotopes of certain atoms are unstable and tend to decompose to become more stable

electrons transfered from one atom to the other COMPLETELY

share electrons

weak 

A  +  B  --> AB

AB ---> A  +  B

• AB+C  ----> AC+B     or
• AB+CD  -->  DB + CA

absorbs and releases alot of heat before temp. changes, polar, chemical reactivity digests and breaks down foods, coushioning cerebiospinal fluid

electrolytes substances that conduct an electrical current in a solution 

• acidic  ----------------basic
•    0  --------------------14

one sugar , glucose, fructose, deoxyribose, galactose

2 simple sugars sucrose lactose maltose

large insoluable many sugar, starch glycogen

most abundant in body   steroids phospholipids and triglycerides

increases the rate of reaction w/o becomng part of the product or being changed itself