Biology Midterm Study Review

29 terms by wookiefanatic

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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

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