Download Unit 2 Vocabulary:

Unit 2 Vocabulary: Life
A. organism
A complete living thing – something that is made of cell(s) and carries on
all life processes
A. stimulus
Something in the environment that causes a response or behavior
A. cell
A. growth
The basic unit of life in an organism – the smallest structure that can
carry on life processes
A life process that is mostly due to an increase in the number of cells
A. biotic
An organism that is carrying on all life processes
A. abiotic
Something that was never living
A. dormant
A living organism that is in a suspended state, like a seed.
B. metabolism
The sum of all chemical process or changes that occur in an organism
B. digestion
The process by which food is broken down into simple substances
B. excretion
The process of eliminating waste from a cell, an organ or an organism
B. respiration
The process by which cells release energy from food molecules for cell
activities
B. asexual
reproduction
A form of reproduction in cells and some simple organisms requiring
only one parent
B. zygote
A cell that is composed of a male and female sex cell – the very start of
life
A form of reproduction that involves the joining of a male and female
sex cell
The ability of a cell or organism to maintain an internal balanced state
B. sexual
reproduction
C. homeostasis
C. diffusion
C. osmosis
C. selectively
permeable
membrane
The movement of molecules from an area of high concentration to an
area of low concentration
The diffusion of water across a cell membrane
A cell membrane that only permits certain molecules to enter or leave
the cell