APHY 101 - Midterm Ch. 1-6 Questions and
Correct Detailed Answers with Complete
Solutions | Graded A+ | New Update 2025-2026
Explain the difference between the study of Anatomy and the study of Physiology
- ANSWERS Anatomy is the study of structure of body parts/Physiology is the
study of function of body parts
Name and define the levels of organization of life - ANSWERS Organelles, cells,
tissues, organs, and organ systems
Define Metabolisim - ANSWERS The sum of all physical and chemical events
that obtain, release, and utilize energy
Define Homeostasis. How does a homeostatic mechanism maintain homeostasis?
- ANSWERS The body's maintenance of a stable internal environment.
Depend on normal concentrations of water, nutrients, and oxygen, and normal
body temperature and pressure
What is meant by negative feedback? How does negative feedback affect
homeostatic mechanisms? - ANSWERS Works to correct a deviation from a set
point (Tries to get back to the set point/normal)
Describe the structure of a serous membrane - ANSWERS Smooth membrane
consisting of 2 layers of epithelial cells which secrete serous fluid
,What are signs of aging at the cellular level? - ANSWERS Impaired cell division
and the ability to break down and recycle worn cell parts
What is meant by anatomical position? - ANSWERS Universal body position:
Standing erect, facing forward, upper limbs at the sides, palms facing forward and
thumbs out.
Explain why chemistry is an important part of the study of Physiology -
ANSWERS Body functions depend on cellular functions that, in turn, result
from chemical changes
Atom - ANSWERS The smallest unit of matter that defines the chemical
elements
Element - ANSWERS Fundamental substances in which all matter is composed
of
Molecule - ANSWERS 2 or more atoms may combine to form a molecule
Compound - ANSWERS A substance made from two or more elements
chemically combined
Name the bulk elements of the body - ANSWERS Carbon, Hydrogen, Oxygen,
Nitrogen, Sulfur, and Phosphorus
, What do atomic number and atomic weight of an atom represent? - ANSWERS
Atomic Number is the number of protons in the atoms of a particular
element/Atomic Weight is the number of protons plus the number of neutrons in
each of an element's atoms
Define Ion. How do we indicate in a molecular formula if an atom is an ion? -
ANSWERS Ions are atoms that gain or lose electrons and become electrically
charged
Isotope - ANSWERS An isotope is an atom that have the same atomic numbers
but different atomic weights
Distinguish between types of chemical reactions: Synthesis, Decomposition,
Exchange, and Reversible - ANSWERS
Electrolyte - ANSWERS An electrolyte is a substance that produces an
electrically conducting solution when dissolved in water.
Acid - ANSWERS Acids are electrolytes that dissociate the release hydrogen
ions in water
Base - ANSWERS A compound that produces hydroxide ions when dissolved in
water
Neutral compound - ANSWERS Occurs when ions of opposite charges attract
one another to form electrically neutral compounds.
Correct Detailed Answers with Complete
Solutions | Graded A+ | New Update 2025-2026
Explain the difference between the study of Anatomy and the study of Physiology
- ANSWERS Anatomy is the study of structure of body parts/Physiology is the
study of function of body parts
Name and define the levels of organization of life - ANSWERS Organelles, cells,
tissues, organs, and organ systems
Define Metabolisim - ANSWERS The sum of all physical and chemical events
that obtain, release, and utilize energy
Define Homeostasis. How does a homeostatic mechanism maintain homeostasis?
- ANSWERS The body's maintenance of a stable internal environment.
Depend on normal concentrations of water, nutrients, and oxygen, and normal
body temperature and pressure
What is meant by negative feedback? How does negative feedback affect
homeostatic mechanisms? - ANSWERS Works to correct a deviation from a set
point (Tries to get back to the set point/normal)
Describe the structure of a serous membrane - ANSWERS Smooth membrane
consisting of 2 layers of epithelial cells which secrete serous fluid
,What are signs of aging at the cellular level? - ANSWERS Impaired cell division
and the ability to break down and recycle worn cell parts
What is meant by anatomical position? - ANSWERS Universal body position:
Standing erect, facing forward, upper limbs at the sides, palms facing forward and
thumbs out.
Explain why chemistry is an important part of the study of Physiology -
ANSWERS Body functions depend on cellular functions that, in turn, result
from chemical changes
Atom - ANSWERS The smallest unit of matter that defines the chemical
elements
Element - ANSWERS Fundamental substances in which all matter is composed
of
Molecule - ANSWERS 2 or more atoms may combine to form a molecule
Compound - ANSWERS A substance made from two or more elements
chemically combined
Name the bulk elements of the body - ANSWERS Carbon, Hydrogen, Oxygen,
Nitrogen, Sulfur, and Phosphorus
, What do atomic number and atomic weight of an atom represent? - ANSWERS
Atomic Number is the number of protons in the atoms of a particular
element/Atomic Weight is the number of protons plus the number of neutrons in
each of an element's atoms
Define Ion. How do we indicate in a molecular formula if an atom is an ion? -
ANSWERS Ions are atoms that gain or lose electrons and become electrically
charged
Isotope - ANSWERS An isotope is an atom that have the same atomic numbers
but different atomic weights
Distinguish between types of chemical reactions: Synthesis, Decomposition,
Exchange, and Reversible - ANSWERS
Electrolyte - ANSWERS An electrolyte is a substance that produces an
electrically conducting solution when dissolved in water.
Acid - ANSWERS Acids are electrolytes that dissociate the release hydrogen
ions in water
Base - ANSWERS A compound that produces hydroxide ions when dissolved in
water
Neutral compound - ANSWERS Occurs when ions of opposite charges attract
one another to form electrically neutral compounds.
