PHGY 170 Final Exam Question And
Answers 2024
When were cells first discovered? - correct answers✅17th century
Three Tenets of Cell Theory - correct answers✅All living
organisms are composed of one or more cells.
The cell is the basic unit of structure and organization in
organisms.
All cells come from preexisting cells.
Prokaryotes - correct answers✅No true nucleus; smaller cells;
always unicellular; binary fission to divide; always reproduce
asexually, ex. bacteria
Eukaryotes - correct answers✅Has a nucleus; large cells; usually
multicellular; mitosis/meiosis; sexual/asexual; ex. plant and
animal
Epithelial Cells - correct answers✅Form protective barriers in
tissues and may be specialized to absorb or secrete specific
compounds
Muscle Cells - correct answers✅Responsible for mov
ement of the skeleton, heart, and many internal organs (e.g.
stomach)
,PHGY 170 Final Exam Question And
Answers 2024
Nerve Cells - correct answers✅nduct electrical signals throughout
the body. Control contraction of muscles. Responsible for the
five senses (taste, touch, smell, sight, hearing)
Connective Tissues Cells - correct answers✅Create extracellular
material that holds cells together in tissue. May be specialized to
absorb or resist
external forces (e.g. tendons, vertebral discs)
Bone Cells - correct answers✅rm the bones of the skeletal
system to give strength and support to the body. These are
very tough
cells.
Secretory Cells - correct answers✅These cells form glands and,
as their name implies, are secretory
Adipose Cells - correct answers✅These are fat cells located
throughout the body to store fat.
Red Blood Cells - correct answers✅These are cells formed
primarily in the bone marrow and release
d into the circulation where they
move throughout the body. They have limited life spans and must
be continuously replaced.
,PHGY 170 Final Exam Question And
Answers 2024
Hydrophilic - correct answers✅Water-liking. Molecules that are
attracted to water.
Carbon based molecules are usually___ and ___ - correct
answers✅large and nonpolar
Hydrophobic - correct answers✅Molecules that keep away from
water. Do not dissolve well in water.
Carbon-based molecules - correct answers✅Lipids,
carbohydrates, amino acids, nucleotides.
Water's Five Unique Characteristics - correct answers✅Liquid at
room temperature, is polar, is more dense as a liquid rather than
a solid, has a high specific heat capacity, high heat of
vaporization.
Water is Liquid at room temperature - correct answers✅This is
due to water's high heat of vaporization and specific heat
capacity. This means a great deal of energy is needed to raise the
temperature of water.
Water is a polar molecule - correct answers✅The oxygen atom is
slightly negative while the hydrogen atom is slightly positive. The
H2O molecules form weak but significant bonds called hydrogen
bonds.
, PHGY 170 Final Exam Question And
Answers 2024
Hydrogen bonds - correct answers✅A weak bond that forms
between a partially positively charged hydrogen atom and a
neighbouring strongly electronegative atom.
Water is more dense as a liquid than a solid - correct
answers✅Water's solid state can float above its liquid state.
Water has a high specific heat capacity - correct
answers✅Specific heat capacity is the amount of heat needed to
change the temperature of one gram of a substance by one
degree celsius.
Water has a high heat of vaporization - correct answers✅The
quantity of heat that must be absorbed for a liquid to vaporize to
a gas.
How does water support life - correct answers✅The hydrogen
bonding characteristics of H2O allow the dissolution of other
molecules essential to life and make it possible to facilitate the
complex network of reactions that support the chemical bases for
life.
Ice is less dense than water which ensures water-based habitats
remain habitable.
Thermal stability means that it can stabilize thermal fluctuations
at both the microscopic and global climatic level.
Answers 2024
When were cells first discovered? - correct answers✅17th century
Three Tenets of Cell Theory - correct answers✅All living
organisms are composed of one or more cells.
The cell is the basic unit of structure and organization in
organisms.
All cells come from preexisting cells.
Prokaryotes - correct answers✅No true nucleus; smaller cells;
always unicellular; binary fission to divide; always reproduce
asexually, ex. bacteria
Eukaryotes - correct answers✅Has a nucleus; large cells; usually
multicellular; mitosis/meiosis; sexual/asexual; ex. plant and
animal
Epithelial Cells - correct answers✅Form protective barriers in
tissues and may be specialized to absorb or secrete specific
compounds
Muscle Cells - correct answers✅Responsible for mov
ement of the skeleton, heart, and many internal organs (e.g.
stomach)
,PHGY 170 Final Exam Question And
Answers 2024
Nerve Cells - correct answers✅nduct electrical signals throughout
the body. Control contraction of muscles. Responsible for the
five senses (taste, touch, smell, sight, hearing)
Connective Tissues Cells - correct answers✅Create extracellular
material that holds cells together in tissue. May be specialized to
absorb or resist
external forces (e.g. tendons, vertebral discs)
Bone Cells - correct answers✅rm the bones of the skeletal
system to give strength and support to the body. These are
very tough
cells.
Secretory Cells - correct answers✅These cells form glands and,
as their name implies, are secretory
Adipose Cells - correct answers✅These are fat cells located
throughout the body to store fat.
Red Blood Cells - correct answers✅These are cells formed
primarily in the bone marrow and release
d into the circulation where they
move throughout the body. They have limited life spans and must
be continuously replaced.
,PHGY 170 Final Exam Question And
Answers 2024
Hydrophilic - correct answers✅Water-liking. Molecules that are
attracted to water.
Carbon based molecules are usually___ and ___ - correct
answers✅large and nonpolar
Hydrophobic - correct answers✅Molecules that keep away from
water. Do not dissolve well in water.
Carbon-based molecules - correct answers✅Lipids,
carbohydrates, amino acids, nucleotides.
Water's Five Unique Characteristics - correct answers✅Liquid at
room temperature, is polar, is more dense as a liquid rather than
a solid, has a high specific heat capacity, high heat of
vaporization.
Water is Liquid at room temperature - correct answers✅This is
due to water's high heat of vaporization and specific heat
capacity. This means a great deal of energy is needed to raise the
temperature of water.
Water is a polar molecule - correct answers✅The oxygen atom is
slightly negative while the hydrogen atom is slightly positive. The
H2O molecules form weak but significant bonds called hydrogen
bonds.
, PHGY 170 Final Exam Question And
Answers 2024
Hydrogen bonds - correct answers✅A weak bond that forms
between a partially positively charged hydrogen atom and a
neighbouring strongly electronegative atom.
Water is more dense as a liquid than a solid - correct
answers✅Water's solid state can float above its liquid state.
Water has a high specific heat capacity - correct
answers✅Specific heat capacity is the amount of heat needed to
change the temperature of one gram of a substance by one
degree celsius.
Water has a high heat of vaporization - correct answers✅The
quantity of heat that must be absorbed for a liquid to vaporize to
a gas.
How does water support life - correct answers✅The hydrogen
bonding characteristics of H2O allow the dissolution of other
molecules essential to life and make it possible to facilitate the
complex network of reactions that support the chemical bases for
life.
Ice is less dense than water which ensures water-based habitats
remain habitable.
Thermal stability means that it can stabilize thermal fluctuations
at both the microscopic and global climatic level.
