Organization of Life Flashcards
Atoms contain which four main elements?
Carbon, oxygen, hydrogen, nitrogen
Other elements atoms have (in small quantities)
Iron, calcium, sodium, and potassium
What are molecules called that are broken down by the body?
Biomolecules
4 main types of biomolecules
carbohydrates, lipids, proteins, nucleic acids
Carbohydrates
sugars and starches
Lipids
fats
Nucleic Acids
DNA and RNA
Proteins
chains of amino acids
All human cells are what? What do they have?
eukaryotic; organelles and nucleus
4 main types of tissue
epithelial, connective, muscle, nervous
Epithelial Tissue
serves as a covering for all free body surfaces
Connective Tissue
provides support for the body
Muscle Tissue
Allows the body to move
Nervous TIssues
controls the body through nerve impulses