HUMAN BODY ? Body functions depend on cellular functions Cellular functions result from chemical changes Elements are made of chemically identical atoms
Here are the postulates of Dalton's atomic theory 1 Matter is composed of exceedingly small particles called atoms An atom is the smallest unit of an element
Chapter 1 Biochemistry: From Atoms to Molecules to Cells Welcome to biochemistry This subject is not entirely new because you have gained
The DNA molecule, however, was of little interest to the scientists of the 1940s In 1871, it was isolated from the cell nucleus by the Swiss scientist
Biology is a multidisciplinary science, drawing on insights from other The molecular formula indicates the number and types of atoms present in a single
Evolution and the origin of life • Atoms and molecules • Carbohydrates, proteins and lipids • Parts and functions of the cell • DNA and gene expression
small molecules are synthesized in the cell by a more diverse collection of chemical reactions than those A few other atoms also play roles in biology;
last 100 years of science is that atoms and molecules are 85 of physics, 100 of chemistry, and 90 of modern molecular biology,” claims Concord
Experimental Techniques in Atomic and Molecular Physics The chemical and therefore the biological properties of these molecules depend on:
ATOMS, MOLECULES, AND ELEMENTS IN OUR BODY Cellular functions result from chemical changes Elements are made Part of biological membranes
Atoms have smaller parts called ______ Cell membrane, nucleus, mitochondria Protons, neutrons, and electrons Matter, elements, and molecules
Relate the composition of atoms and molecules to chemical compounds through the reactions between these molecules within systems of specialized cells assist BIO A 2 1 Describe how the unique properties of water support life on Earth