review for biochemtest Flashcards
(25 cards)
parts of an atom
protons,neutrons,and electrons.
radioactive isotopes
- unstable nuclei that breaks down releasing energy over time.
what are chemical compounds
when elements combine to form different substances
made of two or more atoms.
what are the 2 main types of bonding
- chemical and covalent.
what are the 2 types of chemical reactions.
synthesis and decomposition.
carbohydrates
it breaks down fats make short term energy.
lipids
stores fat.
proteins
fairly big molecules that are composed of one or more amino acids. they are also enzymes that can speed up reactions.
nucleic acids
DNA and RNA that have one or 2 chains of repeating units called nucleotides.
organic compounds
carbon compounds.
ions
A single or group of atoms that carry a positive or negative charge.
isotopes
elements with a different number of neutrons than original state.
chemical bonds
the process of gaining losing or sharing electrons to make
2 or more different atoms combine to form a stable compound.
homeostasis
an organism maintaining internal stability
solution
a mix of 2 or more substances
acid
a solution that reacts with metals or objects
base
a chemical that donates electrons and ions
ph scale
measure of acidity on an object or in a liquid substance
metabolism
part of the stomach that breaks down food
chemical reactions
a chemical change that occurs when 2 or more substances form to combine a new substance
enzyme
proteins that speed up chemical reactions
elements
a substance with the same number of protons
compounds
when two elements bond together
atomic mass
the mass of an atom
