B IO 201- Midter m Exam Stu dy Guide
com plete ver ifi ed solution s +
r ation ales (PASS GUARANTEED)
anatomy - answer study of the structure/morphology of the human
body and its parts
physiology - answer study of the functions of the human body and its
parts
List the levels of organization from simplest to most complex. - answer
subatomic particles
atom
molecule
macro-molecule
organelle
cell
tissue
organ
organ system
organism
,cell - answer -composed of organelles
-the basic units of structure and function of the body
tissue - answer layer or mass of cells with specific function
organ - answer group of different tissues with a function
system/ organ system - answer group of organs with common function
homeostasis - answer maintenance of a stable internal environment
metabolism - answer all of the chemical reactions in an organism that
support life
positive feedback loop - answer -homeostatic mechanism
-response enhances or exaggerates original stimulus
-uncommon in body
-short lived
-examples are contractions in labor by oxytocin and platelet plug
formation+ blood clotting
negative feedback loop - answer -homeostatic mechanism
,-most feedbacks in the body
-response reduces or shuts off original stimulus/ goes in opposite
direction
-examples are regulation of body temperature, regulation of blood
glucose by insulin
Human life depends on what 5 environmental factors? - answer 1)
water
2) food
3) oxygen
4) heat
5) pressure
1) Water - answer -most abundant substance in body
- environment for metabolic processes
-required for transport of substance
-regulation of body temperature
2) Food - answer -provides necessary nutrients
-supplies energy
-supplies raw materials for building living tissue
, 3) Oxygen (gas) - answer -one fifth of air
-used to release energy from nutrients
4) Heat - answer -heat is a form of energy in out environment
- helps maintain body temperature
- partly controls rate of metabolic reactions
5) Pressure - answer -application of force on an object
- atmospheric pressure// important for breathing
-hydrostatic pressure// keeps blood flowing
Identify the parts of a basic homeostatic mechanism. - answer 1)
receptor
2) control center
3) effector
1) receptor - answer detects and provides information about the stimuli
2) control center - answer decision- maker that maintains the set point
3) effector - answer muscle or gland that responds to the control center
and causes the necessary change in the internal enviroment
com plete ver ifi ed solution s +
r ation ales (PASS GUARANTEED)
anatomy - answer study of the structure/morphology of the human
body and its parts
physiology - answer study of the functions of the human body and its
parts
List the levels of organization from simplest to most complex. - answer
subatomic particles
atom
molecule
macro-molecule
organelle
cell
tissue
organ
organ system
organism
,cell - answer -composed of organelles
-the basic units of structure and function of the body
tissue - answer layer or mass of cells with specific function
organ - answer group of different tissues with a function
system/ organ system - answer group of organs with common function
homeostasis - answer maintenance of a stable internal environment
metabolism - answer all of the chemical reactions in an organism that
support life
positive feedback loop - answer -homeostatic mechanism
-response enhances or exaggerates original stimulus
-uncommon in body
-short lived
-examples are contractions in labor by oxytocin and platelet plug
formation+ blood clotting
negative feedback loop - answer -homeostatic mechanism
,-most feedbacks in the body
-response reduces or shuts off original stimulus/ goes in opposite
direction
-examples are regulation of body temperature, regulation of blood
glucose by insulin
Human life depends on what 5 environmental factors? - answer 1)
water
2) food
3) oxygen
4) heat
5) pressure
1) Water - answer -most abundant substance in body
- environment for metabolic processes
-required for transport of substance
-regulation of body temperature
2) Food - answer -provides necessary nutrients
-supplies energy
-supplies raw materials for building living tissue
, 3) Oxygen (gas) - answer -one fifth of air
-used to release energy from nutrients
4) Heat - answer -heat is a form of energy in out environment
- helps maintain body temperature
- partly controls rate of metabolic reactions
5) Pressure - answer -application of force on an object
- atmospheric pressure// important for breathing
-hydrostatic pressure// keeps blood flowing
Identify the parts of a basic homeostatic mechanism. - answer 1)
receptor
2) control center
3) effector
1) receptor - answer detects and provides information about the stimuli
2) control center - answer decision- maker that maintains the set point
3) effector - answer muscle or gland that responds to the control center
and causes the necessary change in the internal enviroment
