Ch 1 and 2 Flashcards
cell
basic unit of biology
cell theory
- all organisms consist of one or more cells
- the cell is the basic structural unit
- cells only arise from preexisting cells
cell biology
cytology + biochemistry + genetics
cytology
study of cells
microscopy
visualization of cells
light micrscope
earliest tool of cytology, ID of organelles
antibody
protein molecule produced in the immune system that binds to a target molecule (antigen)
limit of resolution
how far apart adjacent objects must be to appear separate
resolving power
ability to see fine details of structure
electron microscope
uses a beam of electrons with EM field instead of visible light
biochemical
compound made by living organisms
enzymes
biological catalysts
centrifugation
separating and isolating structures based on size, shape, and density
ultracentrifuge
resolving small organelles and macromolecules
chromatography
a mixture of molecules in solution separated into individual components
electrophoresis
electrical field separates macromolecules based on mobility in gel
mass spectrometry
determines protein size and composition
genes
hereditary factors
chromosomes
threadlike bodies in dividing cells
bioinformatics
merges computer science and biology
CRISPR
clustered regularly interspaced short palindromic repeats
organic chemistry
study of carbon-containing compounds
biological chemistry
chemistry of living systems
bond energy
amount of energy required to break 1 mole of bonds
calorie
amount of energy needed to raise 1g of water by 1 degree Celsius
functional groups
specific arrangements of atoms that confer characteristic chemical properties
conformation
3D shape
macromolecules
ordered array of linear polymers
polymers
proteins, nucleic acids, and polysaccharides
condensation reaction
removal of H2O to polymerize monomers
activated monomers
monomeric units joined together before condensation can occur
carrier molecule
forms activated monomer when coupled with a monomer
hydrolysis
addition of H2O that breaks bonds
self-assembly
info required to specify spontaneous folding of macromolecules and their interactions is inherent to polymers themselves
molecular chaperones
proteins that reduce the probability of incorrect formations
prions
infectious protein molecules
hierarchical assembly
subassemblies act as intermediates