intro to bio
What is biolgy?
The study of life
What are atoms
the building blocks of elements
what is a covalent bond
atoms share a pair of electrons
What are the functions of carbohydrates
provide material to build cell membrane
quick energy for cells
tests for lipids
paper bag test
alcohol emulsion
What is biosphere
everywhere on earth life is found
what do electrons determine
the property of elements
what is a molecule
two or more atoms held together by covalent bonds
what are the functions of proteins
provide structure
provide immunity
aid in muscle movement
saturated lipids are usually --- at room temp.
solid
what is biodiversity
variety of life (usually in warmer climates)
what are compounds
substance made of atoms of different elements bonded together in a certain ratio
what are the four main organic compounds
carbohydrates
nucleic acids
proteins
lipids
what are the functions of nucleic acids
contains genetic information
directs growth and development
unsaturated lipids are usually --- at room temperature
liquid
what are the characteristics of life
growth
reproduction
response
cellular
metabolism
heredity
homeostasis
what are ions
charged atoms from gaining or losing electrons
what makes up polymers
monomers
what are the functions of lipids
store energy
cushion and insulate organs
material used for cell membrane
test for proteins
biuret solution
what is a SEM microscope
surface microscope
what are ionic bonds
positive and negative ions come together (NaCI)
what is the monomer of each of the four main organic compounds
proteins- amino acids
nucleic acids- nucleotide
carbohydrates- glucose
lipids- fatty acids + glycerol
carbohydrates usually end in...
ose
example- glucose
enzymes lower...
activation energy