Block 3 Questions to Consider

• Definition/Illustration– Shows some activity of “life”– Barrier to solvent (spectrum of solubilty)

• Influencing (IV) factors (quantified)– Heat Proportion, concentration(water amt)– pH – Shake, stir, swirl (also time of same)

• Things to measure/observe (DV)– number/frequency– Absolute size (ref measure/clear plastic ruler)– Concentration/density of “cells”– Trace movement/uptake of substances– shape

• Chemical explanation– Protein in solution – unstable chemically– Dehydration of components/role of water– Colloidal properties/why?

• Connection to origin of life question– Primative cells may have been like this– Chemical evolution

Notes from Prelab

Characteristics of Life/Cell Theory recollections

metabolism (catabolism,anabolism) – energy

ability to reproduce organism/cells (growth and repair)

Self movement/reaction to stimulus

Theories as to origin of lifeRNA world – chemical evolutionpanspermia