Characteristics of Living things

16 terms by givenchy1 Teacher

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cell

The smallest unit of life

stimulus

Anything that causes a reaction or change

homeostasis

The maintenance of a constant internal state in a changing environment

sexual reproduction

Reproduction which the sex cells from two parents unite producing offspring that share the traits of both parents

asexual reproduction

Reproduction that does not involve the union of sex cells and in which one parent produces offspring identically to itself

heredity

The passing of genetic traits from parent to offspring

metabolism

The sum of all chemical processes that occur in an organism

producer

An organism that an make its own food by using energy from its surroundings

consumer

An organism that eats other organisms or ogranic matter

decomposer

An organism that gets energy by breaking down the remains of dead organisms

protein

A molecule that is made up of amino acids and that is needed to build and repair body structures

carbohydrate

A class of energy giving nutrients that includes sugars, starches and fiber

lipids

A type of biochemical that does not dissolve in water, fats and steriods

phospholipid

A lipid that contains phospherous and that is a structural component in cell membranes

ATP

Adenosine triphosphate, a molecule that acts as the main energy source for cell processes

nucleic acid

A molecule made up of subunits called nucleotides

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