Science-Chp.2; The Cell in Action Flashcards
diffusion
the movement of particles from regions of higher density to regions of lower density
osmosis
the diffusion of water through a semipermeable membrane
passive transport
the movement of substances across a cell membrane without the use of energy by the cell
active transport
the movement of substances across the cell membrane that requires the cell to use energy
endocytosis
the process by which a cell membrane surrounds a particle and encloses the particle in a vesicle to bring the particle into the cell
exocytosis
when large particles leave the cell and uses an active transport process
photosynthesis
the process by which plants, algae, and some bacteria use sunlight, carbon dioxide, and water to make food
cellular respiration
the process by which cells use oxygen to produce energy from food
fermentation
the breakdown of food without the use of energy
cell cycle
the life cycle of a cell
chromososmes
the DNA of a cell is organized into structures
homologous chromosomes
chromosomes that have the same sequence of genes and the same structure
mitosis
the complicated process of chromosomes separation
cytokenisis
the division of the cytoplasm of a cell
