SN Wk2: BioChem- The Basic Ingredients of Life Flashcards
Skeleton Notes
What is the study of atoms and molecules and their interactions
Chemistry
Chemistry is the study of what?
Study of atoms and molecules and their interactions
Physiology meaning
Focuses on how chemistry relates to a living organism
Smallest recognizable unit of an element
Atom
What is an Atom
Smallest recognizable unit of an element
what do Atoms consist of?
3 things
Protons: positively charged particles
Neutrons: neutral particles
Electrons: negatively charged particles
Positively charged particles are called?
Protons
Protons are..
Positively charged particles
Neutral particles are called?
Neutrons
Neutrons are…
neutral particles
Electrons are..
negatively charged particles
Negatively charged particles are called?
Electrons
How is a Molecule formed
Formed when two or more elements are joined together
What is a Compound
a molecule made of more than one type of element
what is an Ion
atoms that have positive or negative electrons
Positively charged atoms are __________ electrons
loss of
Negatively charged atoms are ___________ electrons
gained of
What is the chief liquid in biological systems
Water H2O
Polar Covalent Bonds are
electrons are shared equally between atoms in water molecules
Hydrophilic molecules are
molecules that mix easily with water
hydrophobic molecules are
molecules that do not mix with water
ex. fats and oils
Solvent meaning
a substance (like water) that does the dissolving
Electrolytes meaning
charged ions essential for body functions
What are the four main categories of Biological Molecules
carbohydrates; lipids; proteins; nucleic acids
what are carbohydrates
sugars and starches used for energy sources and structural purposes
