UNLV Bio 189 Final Exam questions and answers A+ Grade
2026\2027
What is the scientific process?
- correct answer Observations, question, hypothesis, prediction, and test
Hypothesis
- correct answer A testable prediction, often implied by a theory
A hypothesis is ________________ and written so that it could be found incorrect by an observation or
experiment
- correct answer Falsifiable
Is this a hypothesis: cats live fish more than dogs love fish?
- correct answer No because it is now testable
Is this a hypothesis? Why?: big foot lives in north dakota
- correct answer No because it is not tesable
Is this a hypothesis: all swans are white
- correct answer Yes because it is testable
What are the five functional traits of all living things?
- correct answer Grow, sense/response to stimuli, metabolism, homeostasis, reproduction
The smallest unit of life
- correct answer Cells
,The ____________ is the fundamental unit of matter
- correct answer Atom
Electrons
- correct answer Negatively charged subatomic particles
Proton
- correct answer A subatomic particle that has a positive charge
Neutron
- correct answer Subatomic particle with no charge
An atom has the same number of...
- correct answer Protons and electrons
atomic number
- correct answer the number of protons in the nucleus of an atom
number of protons
- correct answer atomic number
Number of protons and neutrons
- correct answer Atomic mass
An elements ___________________ is calculated by adding the number of protons and number of
neutrons
- correct answer Atomic mass
Isotopes
- correct answer Atoms with the same number of protons but different numbers of neutrons
Hydrogen is an example of an _______________.
- correct answer Isotope
, non-polar covalent bond
- correct answer equal sharing of electrons
polar covalent bond
- correct answer unequal sharing of electron species
H2O is an example of a
- correct answer Polar covalent bond
ionic bonds
- correct answer formed when one or more electrons are transferred from one atom to another
NaCl is an example of a
- correct answer Ionic bond
Why is h2O polar and CH4 nonpolar?
- correct answer Molecular polarity determines how a molecule behaves
__________ have Carbon based backbones and at least one Carbon-Hydrogen bond
- correct answer Organic molecules
____________ lack carbon-based backbones and carbon-hydrogen bonds
- correct answer Inorganic molecule
C6H12O6 is what type of molecule?
- correct answer Organic
CO2 is what type of molecule?
- correct answer Inorganic
What are the four organic molecules that compose all life?
- correct answer Carbohydrates, proteins, lipids, and nucleotides
2026\2027
What is the scientific process?
- correct answer Observations, question, hypothesis, prediction, and test
Hypothesis
- correct answer A testable prediction, often implied by a theory
A hypothesis is ________________ and written so that it could be found incorrect by an observation or
experiment
- correct answer Falsifiable
Is this a hypothesis: cats live fish more than dogs love fish?
- correct answer No because it is now testable
Is this a hypothesis? Why?: big foot lives in north dakota
- correct answer No because it is not tesable
Is this a hypothesis: all swans are white
- correct answer Yes because it is testable
What are the five functional traits of all living things?
- correct answer Grow, sense/response to stimuli, metabolism, homeostasis, reproduction
The smallest unit of life
- correct answer Cells
,The ____________ is the fundamental unit of matter
- correct answer Atom
Electrons
- correct answer Negatively charged subatomic particles
Proton
- correct answer A subatomic particle that has a positive charge
Neutron
- correct answer Subatomic particle with no charge
An atom has the same number of...
- correct answer Protons and electrons
atomic number
- correct answer the number of protons in the nucleus of an atom
number of protons
- correct answer atomic number
Number of protons and neutrons
- correct answer Atomic mass
An elements ___________________ is calculated by adding the number of protons and number of
neutrons
- correct answer Atomic mass
Isotopes
- correct answer Atoms with the same number of protons but different numbers of neutrons
Hydrogen is an example of an _______________.
- correct answer Isotope
, non-polar covalent bond
- correct answer equal sharing of electrons
polar covalent bond
- correct answer unequal sharing of electron species
H2O is an example of a
- correct answer Polar covalent bond
ionic bonds
- correct answer formed when one or more electrons are transferred from one atom to another
NaCl is an example of a
- correct answer Ionic bond
Why is h2O polar and CH4 nonpolar?
- correct answer Molecular polarity determines how a molecule behaves
__________ have Carbon based backbones and at least one Carbon-Hydrogen bond
- correct answer Organic molecules
____________ lack carbon-based backbones and carbon-hydrogen bonds
- correct answer Inorganic molecule
C6H12O6 is what type of molecule?
- correct answer Organic
CO2 is what type of molecule?
- correct answer Inorganic
What are the four organic molecules that compose all life?
- correct answer Carbohydrates, proteins, lipids, and nucleotides
