The Chemical Context of Life
Chemical Elements and Compounds
a. Matter consists of chemical elements in pure form and in
combinations called compounds
i. Organisms are composed of matter, which is
anything that takes up
Communities and Ecosystems
Energy flow through the ecosystem
Plants are at the bottom of the food chain. They contain the highest amount of energy,
which they obtain from sunlight.
The source of energy for most ecosystems is the Sun.
A few foo
5.2 Outline- Natural Selection
The Mechanism of Evolution:
Darwin and Wallace suggested a mechanism for evolution: natural selection
It stars with the overproduction of offspring and the presence of natural variation in the
population; then there is a str
The importance of sunlight to ecosystems
The best studied ecosystems are those found on Earths surface, whether they are on
land or in surface water.
Less studied ecosystems, that exist in total darkness, such as those in deep ocea
August 22, 2015
Biosphere: The global sum of all ecosystems
Biome: A large ecosystem that occupies a distinct region
c. Tropical Rainforest
Ecosystem: A community or organisms and the non
2.8 Outline: Cell Respiration
Cell respiration is used by all cells to produce ATP
o Organic molecules contain energy in their molecular structures.
o Each covalent bond in a glucose, amino acid, or fatty acid represents stored chemical
Species, Communities, and Ecosystems
The Interdependence of Living Organisms
In 1980, there was a major volcanic catastrophe at Mount Saint Helens on the west
coast of the USA.
What is a species?
The definition of a species is a group of org
5.1 Outline- Evidence for Evolution
Darwin and Wallace
o Charles Darwin had the opportunity to travel abroad for a scientific exploration mission
starting in 1831 and lasting for 5 years.
o Darwin discovered that, in 1858, Alfred Russel Wallace had indep
Species and Communities
Limiting factors affect the distribution of species in a community
The distribution of a species depends on the factors, which are both abiotic (non-living)
and biotic (living).
Abiotic factors include:
o Light, for exa
2.9 Outline: Photosynthesis
Photosynthesis converts light energy into chemical energy
o Plants and other photosynthetic organisms produce foods that start food chains.
o We count on the Sun as a constant energy source for both warmth and food production
1. Wattenberg blames a decline in local party organizations and party identification for low voter
turnouts. He also claims that young people do not vote because they feel that they are being
ignored by political campaigns and their opinions are different
Describe each part of the brain listed below.
Textbook p. 902 & 903
Visit the CBC Interactive Brain Website
Part of Brain
Evaluating consequences,making consequences,
and forming plans.
The modeling of osmosis and
diffusion using dialysis tubing with
known and unknown concentrations.
By: Lexi Polote
Cells must maintain homeostasis by regulating what goes in and out of the cell through the
The amount of sodium
bicarbonate and the effect on
the rate of photosynthesis.
By: Lexi Polote
October 11, 2015
Lab 5: Photosynthesis
The rate of photosynthesis can be measured by either the disappearance of substrate or
Animal Behavior Lab- Results Section
Average Number of Pill Bugs Every 30 Seconds
In this experiment four different choice chambers were used in order to determine the
February 15, 2016
Lab 8: Transformation with Green Fluorescent Protein
Bacteria can be transferred in two different ways either by transformation or by conjugation.
Transformation deals with exogenous DNA from the environment while