A&P - 1.3 Functions Of Human Life

biology

study of life

functions of human life

• organization

• metabolism

• responsiveness

• movement

• development, growth, and reproduction

organization

• separation of one area from another; organism, cell, organ, etc.

• ability to control what enters and exits each area

metabolism

all chemical reactions in a cell/organism (both anabolism and catabolism)

anabolic

• smaller, simpler molecules are combined to create a larger, more complex substance

• will require input of energy - endergonic

• conversion of ADP to ATP is anabolic

catabolic

• larger, more complex substances are broken down into smaller, simpler, molecules

• will release energy - exergonic

• conversion of ATP to ADP is catabolic

adenosine triphosphate (ATP)

a key chemical compound to store and release energy

responsiveness

• the ability of an organism to adjust to changes in its internal and external environments

• examples: moving toward food and water, or internal homeostasis of body temperature

movement

coordinated, intentional changes in location or position, including internal movement of organs, substances

development, growth, and reproduction

changes in an organism over the life cycle

development

all the changes the body goes through in life - including growth, repair, and differentiation

differentiation

unspecialized cells become specialized in structure and function to perform specific tasks

growth

an increase in body size through an increase in the number of existing cells, non-cellular material around those cells, and rarely, the size of existing cells

reproduction

the formation of a new organism from parent organisms