BIO 215 EXAM 1 UPDATED Exam
Questions and CORRECT Answers
Anatomy - CORRECT ANSWER - The study of body structure
Physiology - CORRECT ANSWER - the study of bodily function
Levels of organization - CORRECT ANSWER - cell, tissue, organ, organ system,
organism
organ system - CORRECT ANSWER - group of organs that work together to perform a
specific function
Organs - CORRECT ANSWER - Tissues are organized into:, group of tissues that work
together to perform closely related functions.
Tissues - CORRECT ANSWER - Groups of cells with a common structure and function.
Cells - CORRECT ANSWER - Basic unit of life
Homeostasis - CORRECT ANSWER - body systems working together to maintain a stable
internal environment.
feedback loop - CORRECT ANSWER - systems sue feedback loops to respond to external
and internal changes to keep systems functioning within a normal range.
positive feedback loop - CORRECT ANSWER - the response reinforces the stimulus
rather than decreasing or removing it
,negative feedback loop - CORRECT ANSWER - response negates the stimulus
extracellular matrix - CORRECT ANSWER - non cellular part of a tissue
cell membrane - CORRECT ANSWER - A cell structure that hold cell together
Nucleus - CORRECT ANSWER - A part of the cell containing genetic materials
Cytoplasm - CORRECT ANSWER - fluid in the cell
ground substance - CORRECT ANSWER - fluid or semi-fluid portion of the matrix
collagen fibers - CORRECT ANSWER - hold structures together with great tensile
strength
epithelial tissue - CORRECT ANSWER - avascular sheets of cell on a thin membrane
called the basement membrane with a little extracellular matrix.
epithelial tissue functions - CORRECT ANSWER - line surfaces and/or secret fluids.
Avascular - CORRECT ANSWER - without blood vessels
basement membrane - CORRECT ANSWER - Layer between epithelium and underlying
connective tissue
simple epithelial tissue - CORRECT ANSWER - single layer of cells
stratified epithelial tissue - CORRECT ANSWER - multiple layers of cells
, Squamous - CORRECT ANSWER - flat cells
Cuboidal - CORRECT ANSWER - cube shaped cells
pseudostratified columnar epithelium - CORRECT ANSWER - looks like stratified but is
not
columnar epithelium - CORRECT ANSWER - Cells shaped like bricks standing on end.
cell junctions - CORRECT ANSWER - connections between cells that hold the cells
together as a unit
Desmosomes - CORRECT ANSWER - link adjacent cells at a single point
tight junctions - CORRECT ANSWER - fuse cells together to prevent thing from moving
between.
gap junctions - CORRECT ANSWER - allow cytoplasm to flow between adjacent cells.
cell processes - CORRECT ANSWER - structures that attach to cell body
Microvilli - CORRECT ANSWER - Fingerlike extensions of cell membrane that increase
surface area to aid in absorption (common in GI tract)
Cilia - CORRECT ANSWER - Hairlike projections that beat back and forth to move fluids
or mucous on the surface.
Questions and CORRECT Answers
Anatomy - CORRECT ANSWER - The study of body structure
Physiology - CORRECT ANSWER - the study of bodily function
Levels of organization - CORRECT ANSWER - cell, tissue, organ, organ system,
organism
organ system - CORRECT ANSWER - group of organs that work together to perform a
specific function
Organs - CORRECT ANSWER - Tissues are organized into:, group of tissues that work
together to perform closely related functions.
Tissues - CORRECT ANSWER - Groups of cells with a common structure and function.
Cells - CORRECT ANSWER - Basic unit of life
Homeostasis - CORRECT ANSWER - body systems working together to maintain a stable
internal environment.
feedback loop - CORRECT ANSWER - systems sue feedback loops to respond to external
and internal changes to keep systems functioning within a normal range.
positive feedback loop - CORRECT ANSWER - the response reinforces the stimulus
rather than decreasing or removing it
,negative feedback loop - CORRECT ANSWER - response negates the stimulus
extracellular matrix - CORRECT ANSWER - non cellular part of a tissue
cell membrane - CORRECT ANSWER - A cell structure that hold cell together
Nucleus - CORRECT ANSWER - A part of the cell containing genetic materials
Cytoplasm - CORRECT ANSWER - fluid in the cell
ground substance - CORRECT ANSWER - fluid or semi-fluid portion of the matrix
collagen fibers - CORRECT ANSWER - hold structures together with great tensile
strength
epithelial tissue - CORRECT ANSWER - avascular sheets of cell on a thin membrane
called the basement membrane with a little extracellular matrix.
epithelial tissue functions - CORRECT ANSWER - line surfaces and/or secret fluids.
Avascular - CORRECT ANSWER - without blood vessels
basement membrane - CORRECT ANSWER - Layer between epithelium and underlying
connective tissue
simple epithelial tissue - CORRECT ANSWER - single layer of cells
stratified epithelial tissue - CORRECT ANSWER - multiple layers of cells
, Squamous - CORRECT ANSWER - flat cells
Cuboidal - CORRECT ANSWER - cube shaped cells
pseudostratified columnar epithelium - CORRECT ANSWER - looks like stratified but is
not
columnar epithelium - CORRECT ANSWER - Cells shaped like bricks standing on end.
cell junctions - CORRECT ANSWER - connections between cells that hold the cells
together as a unit
Desmosomes - CORRECT ANSWER - link adjacent cells at a single point
tight junctions - CORRECT ANSWER - fuse cells together to prevent thing from moving
between.
gap junctions - CORRECT ANSWER - allow cytoplasm to flow between adjacent cells.
cell processes - CORRECT ANSWER - structures that attach to cell body
Microvilli - CORRECT ANSWER - Fingerlike extensions of cell membrane that increase
surface area to aid in absorption (common in GI tract)
Cilia - CORRECT ANSWER - Hairlike projections that beat back and forth to move fluids
or mucous on the surface.
