Unit 1 Topic 2 Vocabulary

DNA

molecule present in all living
things; contains the information
that determines the traits that a
living thing inherits and needs to
live

genetic information

HOMEOSTASIS

the maintenance of a constant internal
state in a changing environment

: balance

*stay the same on the inside

DIFFUSION

movement of particles from areas of high
concentration to low concentration

: High

Low is the easy way to go

OSMOSIS

the diffusion of water through a
semipermeable membrane

:water across a membrane

PHOTOSYNTHESIS

: makes glucose (sugar)

 process in which some
organisms use sunlight, carbon
dioxide, and water to make
food.

CELLULAR RESPIRATION

 the process by which cells use oxygen to

produce energy from food

: makes

ATP

(energy)

MITOSIS

process of cell division that form two new
nuclei, each of which has the same number
of chromosomes

: making more cells

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