SCI 220 | Questions with 100% Verified Answers | Latest Update
2026/2027
Question: Anatomy
Answer:
study of the structure of an organism and the relationships of its parts
Question: Physiology
Answer:
the science that deals with the functions of the living organism and its parts
Question: List the order of increasing complexity the levels of
organization of the body
Answer:
chemical, organelle, cellular, tissue, organ, system
Question: Chemical level
Answer:
There are more than 100 different chemical building blocks of nature called atoms.
Combinations of atoms form larger chemical groupings, called molecules.
Molecules, in turn, often combine with other atoms and molecules to form larger and
more complex chemicals, called macromolecules.
Unless proper relationships among chemical elements are maintained, death results.
Question: Organelle Level
Answer:
Chemical structures may be organized within larger units called cells to form various
structures called organelles organelle may be defined as a structure made of molecules
organized in such a way that it can perform a specific function. Organelles are the "tiny
organs" that allow each cell to live. Organelles cannot survive outside the cell, but
without organelles the cell itself could not survive either.
Mitochondria—the "powerhouses" of cells that provide energy needed by the cell to
carry on day-to-day function-ing, growth, and repair
• Golgi apparatus—set of sacs that provides a "packaging" service to the cell by storing
material for future internal use or for export from the cell
• Endoplasmic reticulum (ER)—network of channels within the cell that act as "highways"
for the movement of chemicals and as sites for chemical processing
, Question: Cellular Level
Answer:
Cells are the smallest and most numerous structural units that possess and exhibit the
basic characteristics of living matter.
Each cell is surrounded by a membrane and is characterized by a single nucleus
surrounded by cytoplasm that includes the numerous organelles required for the normal
processes of living. Although all cells have certain features in common, they special-ize
or differentiate to perform unique functions. Fat cells, for ex-ample, are structurally
modified to permit the storage of fats, whereas other cells, such as cardiac muscle cells,
are able to contract with great force.
Muscle, bone, nerve, and blood cells are other examples of structurally and functionally
unique cells
Question: Tissue Level
Answer:
a group of a great many similar cells that all developed together from the same part of
the embryo and all perform a certain function.
Tissue cells are surrounded by varying amounts and kinds of nonliving, intercellular
substances, or the matrix.
Tissues are the "fabric" of the body.
There are four major or principal tissue types: epithelial, connec-tive, muscle, and
nervous.
Question: Organ Level
Answer:
structure made up of several different kinds of tissues arranged so that, together, they
can perform a special function.
If tissues are the "fabric" of the body, an organ is like an item of clothing with a specific
function made up of different fabrics. The heart is an example of the organ level: muscle
and connective tissues give it shape and pump blood; epithelial tissues line the cavities,
or chambers; and nervous tissues permit control of the pumping con-tractions of the
heart.
Each organ has a unique shape, size, appearance, and placement in the body, and each
can be identified by the pattern of tissues that form it. The lungs, heart, brain, kidneys,
liver, and spleen are all examples of organs.
Question: System Level
Answer:
involves varying numbers and kinds of organs arranged so that, together, they can
perform complex func-tions for the body.
Eleven major systems compose the human body: integumentary, skeletal, muscular,
nervous, endocrine, cardiovascular, lymphatic/ immune, respiratory, digestive, urinary,
and reproductive.
first three systems listed (integumentary, skeletal, muscular) make up the framework of
the body and therefore provide support and movement.
2026/2027
Question: Anatomy
Answer:
study of the structure of an organism and the relationships of its parts
Question: Physiology
Answer:
the science that deals with the functions of the living organism and its parts
Question: List the order of increasing complexity the levels of
organization of the body
Answer:
chemical, organelle, cellular, tissue, organ, system
Question: Chemical level
Answer:
There are more than 100 different chemical building blocks of nature called atoms.
Combinations of atoms form larger chemical groupings, called molecules.
Molecules, in turn, often combine with other atoms and molecules to form larger and
more complex chemicals, called macromolecules.
Unless proper relationships among chemical elements are maintained, death results.
Question: Organelle Level
Answer:
Chemical structures may be organized within larger units called cells to form various
structures called organelles organelle may be defined as a structure made of molecules
organized in such a way that it can perform a specific function. Organelles are the "tiny
organs" that allow each cell to live. Organelles cannot survive outside the cell, but
without organelles the cell itself could not survive either.
Mitochondria—the "powerhouses" of cells that provide energy needed by the cell to
carry on day-to-day function-ing, growth, and repair
• Golgi apparatus—set of sacs that provides a "packaging" service to the cell by storing
material for future internal use or for export from the cell
• Endoplasmic reticulum (ER)—network of channels within the cell that act as "highways"
for the movement of chemicals and as sites for chemical processing
, Question: Cellular Level
Answer:
Cells are the smallest and most numerous structural units that possess and exhibit the
basic characteristics of living matter.
Each cell is surrounded by a membrane and is characterized by a single nucleus
surrounded by cytoplasm that includes the numerous organelles required for the normal
processes of living. Although all cells have certain features in common, they special-ize
or differentiate to perform unique functions. Fat cells, for ex-ample, are structurally
modified to permit the storage of fats, whereas other cells, such as cardiac muscle cells,
are able to contract with great force.
Muscle, bone, nerve, and blood cells are other examples of structurally and functionally
unique cells
Question: Tissue Level
Answer:
a group of a great many similar cells that all developed together from the same part of
the embryo and all perform a certain function.
Tissue cells are surrounded by varying amounts and kinds of nonliving, intercellular
substances, or the matrix.
Tissues are the "fabric" of the body.
There are four major or principal tissue types: epithelial, connec-tive, muscle, and
nervous.
Question: Organ Level
Answer:
structure made up of several different kinds of tissues arranged so that, together, they
can perform a special function.
If tissues are the "fabric" of the body, an organ is like an item of clothing with a specific
function made up of different fabrics. The heart is an example of the organ level: muscle
and connective tissues give it shape and pump blood; epithelial tissues line the cavities,
or chambers; and nervous tissues permit control of the pumping con-tractions of the
heart.
Each organ has a unique shape, size, appearance, and placement in the body, and each
can be identified by the pattern of tissues that form it. The lungs, heart, brain, kidneys,
liver, and spleen are all examples of organs.
Question: System Level
Answer:
involves varying numbers and kinds of organs arranged so that, together, they can
perform complex func-tions for the body.
Eleven major systems compose the human body: integumentary, skeletal, muscular,
nervous, endocrine, cardiovascular, lymphatic/ immune, respiratory, digestive, urinary,
and reproductive.
first three systems listed (integumentary, skeletal, muscular) make up the framework of
the body and therefore provide support and movement.
