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Biology Midterm Study Review

STUDY
PLAY
Biology
study of life
Homeostasis
maintainance of a constant internal state of changing
Heredity
passing of traits
Theory
set of related of hypothesis that have been tested
Observation
act of noting or percieving objects or events using the senses
Control
Control=Compare
Molecule
group of atoms held together by chem. forces
Adhesion
attractive force between 2 bodies of diff. subst. that are in contact with each other
Cohesion
force that holds molecules of a single mat. together
flagella
long, hairlike structure that grows out of a cell and enables cell to move
cell wall
rigid structure that provides support
mitochondria
powerhouse; ATP is stored here
golgi apparatus
make and package material
ribosome
protien syntesis
cell membrane
barrier between cell and environment
chloroplast
photosynthesis occurs here
vacuole
fluid-filled vesicle
cytoplasm
includes everything but nucleus
Endocytosis
movement of a substance into a cell by a vesicle
Exocytosis
movement of a substance out of a cell by a vesicle
Fermentation
breakdown of carbs by enzymes, bacteria in the absense of oxygen
anaerobic
living or active in the absence of free oxygen
photosynthesis
process by which plants get energy
autotroph
organism that produces own nutrients
heterotroph
organism that obtains energy from the foods it consumes; also called a consumer
cytokensis
division of cytoplasm
mitosis
cell division that forms 2 nuclei
karyotype
array of chromosomes
centromere
where chromatids meet