Levels of Organization of the Body (1-7)

Question 1

Chemical Level

Answer 1

combinations of atoms form larger chemical groupings called molecules, which, in turn, often combine with other atoms and molecules to form macromolecules. (1)

Question 2

Organelles

Answer 2

a structure made of molecules organized in such a way that it can perform a specific function. Ex. Mitochondria (2)

Question 3

Cells

Answer 3

smallest and most numerous structural units that posses and exhibit the basic characteristics of living matter. Each cell contains a membrane, nucleus, cytoplasm, and numerous organelles. (3)

Question 4

Tissues

Answer 4

group of a great many similar cells that all developed together from the same part of the embryo and all perform a certain function. Surrounded by varying amounts and kinds of nonliving, intercellular substances, or ‘the matrix.’ There are four types: epithelial, connective, muscle, and nervous. (4)

Question 5

Organs

Answer 5

a structure made up of several different kinds of tissues arranged so that, together, they can perform a specific body function. Ex. Heart. (5)

Question 6

Systems

Answer 6

involves varying numbers and kinds of organs arranged so that, together, they can perform complex functions for the body. There are 11 major systems in the human body: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic/immune, respiratory, digestive, urinary, and reproductive. (description of systems and their functions on page 9 of Patton) (6)

Question 7

Organisms

Answer 7

the sum of all other parts. (7)