Anatomy & Physiology Chapter 1-4 Mcgraw
Hill Questions and Answers (100% Correct
Answers) Already Graded A+
Homeostasis [ Ans: ] process by which organisms maintain
a relatively stable internal environment
Receptor [ Ans: ] body structure that monitors changes in
a controlled condition and sends input to a control center
Stimulus [ Ans: ] a signal to which an organism responds
control center [ Ans: ] processes the signal and sends
instructions
Effector [ Ans: ] an organ or cell that acts in response to a
stimulus.
negative feedback [ Ans: ] A primary mechanism of
homeostasis, whereby a change in a physiological variable
that is being monitored triggers a response that
counteracts the initial fluctuation.
positive feedback [ Ans: ] Feedback that tends to magnify
a process or increase its output until a climatic event
occurs.
An example of negative feedback [ Ans: ] Controlling body
temperature
,An example of positive feedback [ Ans: ] A mother
breastfeeding
An example of homeostasis imbalance [ Ans: ] Diabetes
What is an SSRI? [ Ans: ] Selective Serotonin Reuptake
Inhibitor; an example of this is Serotonin, which is a
neurotransmitter.
organic compounds [ Ans: ] Compounds that contain
carbon
inorganic compounds [ Ans: ] Compounds that do not
contain carbon
Examples of organic compounds [ Ans: ] carbohydrates,
lipids, proteins, nucleic acids
examples of inorganic compounds [ Ans: ] water, salts,
acids, bases
Properties of water [ Ans: ] High heat capacity, high heat
of vaporization, polar solvent, reactivity, cushion
Acid [ Ans: ] A substance that increases the hydrogen ion
concentration of a solution (H+)
Base [ Ans: ] A substance that decreases the hydrogen ion
concentration in a solution (OH-)
, As a liquid, how does water serve as a function in the
body? [ Ans: ] Transportation, lubrication, cushioning, and
excretes wastses.
What kind of a solvent is water? [ Ans: ] universal solvent -
polar
What kind of substances dissolve in water? [ Ans: ] polar
molecules (glucose) and ions (Na+)
Hydrophobic [ Ans: ] Water fearing
Hydrophilic [ Ans: ] Water loving
Why do polar molecules dissolve in water better than
others? [ Ans: ] Because of the hydrogen bonds that form
between those molecules and water molecules.
What is dissociation? [ Ans: ] the process in which an ionic
compound separates into ions as it dissolves
Electrolyte [ Ans: ] An ionic compound whose aqueous
solution conducts an electric current (salts, acids, bases).
polar [ Ans: ] Molecule with partial charges. Mixes with
water.
nonpolar [ Ans: ] No partial charges. Do not mix with
water.
proton donor [ Ans: ] acid
Hill Questions and Answers (100% Correct
Answers) Already Graded A+
Homeostasis [ Ans: ] process by which organisms maintain
a relatively stable internal environment
Receptor [ Ans: ] body structure that monitors changes in
a controlled condition and sends input to a control center
Stimulus [ Ans: ] a signal to which an organism responds
control center [ Ans: ] processes the signal and sends
instructions
Effector [ Ans: ] an organ or cell that acts in response to a
stimulus.
negative feedback [ Ans: ] A primary mechanism of
homeostasis, whereby a change in a physiological variable
that is being monitored triggers a response that
counteracts the initial fluctuation.
positive feedback [ Ans: ] Feedback that tends to magnify
a process or increase its output until a climatic event
occurs.
An example of negative feedback [ Ans: ] Controlling body
temperature
,An example of positive feedback [ Ans: ] A mother
breastfeeding
An example of homeostasis imbalance [ Ans: ] Diabetes
What is an SSRI? [ Ans: ] Selective Serotonin Reuptake
Inhibitor; an example of this is Serotonin, which is a
neurotransmitter.
organic compounds [ Ans: ] Compounds that contain
carbon
inorganic compounds [ Ans: ] Compounds that do not
contain carbon
Examples of organic compounds [ Ans: ] carbohydrates,
lipids, proteins, nucleic acids
examples of inorganic compounds [ Ans: ] water, salts,
acids, bases
Properties of water [ Ans: ] High heat capacity, high heat
of vaporization, polar solvent, reactivity, cushion
Acid [ Ans: ] A substance that increases the hydrogen ion
concentration of a solution (H+)
Base [ Ans: ] A substance that decreases the hydrogen ion
concentration in a solution (OH-)
, As a liquid, how does water serve as a function in the
body? [ Ans: ] Transportation, lubrication, cushioning, and
excretes wastses.
What kind of a solvent is water? [ Ans: ] universal solvent -
polar
What kind of substances dissolve in water? [ Ans: ] polar
molecules (glucose) and ions (Na+)
Hydrophobic [ Ans: ] Water fearing
Hydrophilic [ Ans: ] Water loving
Why do polar molecules dissolve in water better than
others? [ Ans: ] Because of the hydrogen bonds that form
between those molecules and water molecules.
What is dissociation? [ Ans: ] the process in which an ionic
compound separates into ions as it dissolves
Electrolyte [ Ans: ] An ionic compound whose aqueous
solution conducts an electric current (salts, acids, bases).
polar [ Ans: ] Molecule with partial charges. Mixes with
water.
nonpolar [ Ans: ] No partial charges. Do not mix with
water.
proton donor [ Ans: ] acid
