the central part of a plant or animal cell
nucleus
capture energy from sunlight to produce food
chloroplast
provides energy to the cell from the food to carry out its functions
mitochondria
substance that cannot be broken down
element
when two or more elements are combined
compound
made from the elements carbon, hydrogen and oxygen
carbohydrates
cell membranes consist mainly of this
lipids
organic molecules made of carbon hydrogen, oxygen, nitrogen and some cases sulfur
protein
speeds up chemical reactions in living things
enzymes
very long organic molecules
nucleic acid
deoxyribonucleic acid
DNA
the shape of a DNA molecule is described as
double helix
allows some substances to pass by but not others
selectively premeable
dissolved materials across a cell membrane without using cellular energy
passive transport
when molecules move from high concentration to low concentration area
diffusion
the diffusion of water molecules across a selectively premeable membrane
osmosis
movement of metrials across a cell membrane using cellular energy
active transport
changes shape and engulfs the particle
endocytosis
captures energy in sunlight to make food
photosynthesis
an organism that makes its own food
autotroph
an organism that cannot make its own food
heterotroph
the main pigment in photosynthesis in chloroplast
chlorophyll
the process in which cells obtain energy from glucose
cellular respiration
an energy releasing process that does not require oxygen
fermentation
cellular respiration that does not require oxygen
aerobic respiration
cellular respiration that requires oxygen
anaerobic respiration
an organism that makes its own food
producer