BIOLOGY 109 EXAM 1 QUESTIONS WITH 100% CORRECT
ANSWERS LATEST 2025/2026
What are the characteristics of life?
All life is organized
All life grows and develops
All life reproduces
All life responds to stimuli
All life processes energy
All life adapts
All life is homeostatic
List the steps to the scientific method.
make an observation,
come up with a question,
form a hypothesis,
collect and analyze data,
conclusion.
What is atomic mass?
number of protons and number of neutrons
,What is the atomic number?
the number of protons and electrons
What is an ion?
an element or compound with an electrical charge
What are the types of ions?
What is their charge?
Cation: positive ion resulting from the loss of electrons
Anion: negative ion resulting from a gaining of electrons
What is an isotope?
an element with a charge in the number of neutrons
What are the types of chemical bonds?
Ionic Bond: the bonding of opposite ions.
Covalent Bond: a bond resulting from the sharing of electrons.
Hydrogen Bond: the bonding of hydrogen to another element.
List the types of particles and their charge.
, Protons: (+) charge; 1 amu
Electrons: (-) charge; 0 amu
Neutrons: zero charge; 1 amu
List the properties of water.
Water is sticky,
Universal solvent,
Ice is less dense than liquid water,
Water can filter UV radiation,
Water remains a liquid over a wide temperature range,
Moderate pH.
List the difference between cohesion and adhesion.
Cohesion: water molecules bonding to each other
Adhesion: water molecules bonding to other polar molecules
The difference in pH units between 2 acidic solutions is 3. How much more acidic is the stronger
acid than the weaker acid?
1000 more acidic
The 2+ in Cu2+ tells us that this atom is what?
has two more protons than electrons
ANSWERS LATEST 2025/2026
What are the characteristics of life?
All life is organized
All life grows and develops
All life reproduces
All life responds to stimuli
All life processes energy
All life adapts
All life is homeostatic
List the steps to the scientific method.
make an observation,
come up with a question,
form a hypothesis,
collect and analyze data,
conclusion.
What is atomic mass?
number of protons and number of neutrons
,What is the atomic number?
the number of protons and electrons
What is an ion?
an element or compound with an electrical charge
What are the types of ions?
What is their charge?
Cation: positive ion resulting from the loss of electrons
Anion: negative ion resulting from a gaining of electrons
What is an isotope?
an element with a charge in the number of neutrons
What are the types of chemical bonds?
Ionic Bond: the bonding of opposite ions.
Covalent Bond: a bond resulting from the sharing of electrons.
Hydrogen Bond: the bonding of hydrogen to another element.
List the types of particles and their charge.
, Protons: (+) charge; 1 amu
Electrons: (-) charge; 0 amu
Neutrons: zero charge; 1 amu
List the properties of water.
Water is sticky,
Universal solvent,
Ice is less dense than liquid water,
Water can filter UV radiation,
Water remains a liquid over a wide temperature range,
Moderate pH.
List the difference between cohesion and adhesion.
Cohesion: water molecules bonding to each other
Adhesion: water molecules bonding to other polar molecules
The difference in pH units between 2 acidic solutions is 3. How much more acidic is the stronger
acid than the weaker acid?
1000 more acidic
The 2+ in Cu2+ tells us that this atom is what?
has two more protons than electrons
