Bio 105 Final Exam Questions and
Correct Answers 2026 Update.
a cell - Answer What is the lowest level of biological organization that biologist considers to
be alive?
A. Protein
B. DNA
C. a Cell
D. A multicellular organism
E. A population of organisms
order - Answer Which category falls immediately below "class" in they systematic hierarchy?
A. Species
B. Order
C. Family
D. Genus
E. Phylum
using controlled experiments to test falsifiable hypotheses - Answer Which of the following
represents the application of the "scientific method"
A. Comparing one experimental subject to one control subject
B.Believing an explanation that is too complex to be tested
C. using controlled experiments to test falsifiable hypotheses
D. Developing one testable hypothesis to explain a natural phenomenon
E. Observing a once-in-a-lifetime event under natural conditions
life cycle - Answer Houseflies develop through a series of programmed stages from egg, to
larva, to pupa, to flying adult. This series of stages is called.
A. artificial selection
B. Respiration
C. homeostasis
D. life cycle
,E. metabolism
Receptor - Answer Which structor allows living organisms to detect changes in the
environment
A. Protein
B. Receptor
C. Gene
D. RNA
E. Nucleus
Mutation in genes produce new variations in a population - Answer Which of the following is
not a component of Darwin's theory as he understood it
A. Some individuals in a population survive longer than others
B. Sone individuals in a population reproduce more than others
C. Heritable variations allow some individuals to compete more successfully for resources
D. Mutation in genes produce new variations in a population
E. Some new variations are passed to the next generation.
How did life begin? - Answer Which of the following questions best exemplifies basic
research
A. How did life begin?
B. How does alcohol intake affect aging?
C. How fast does H1N1 flu spread among humans
D.How can we reduce hereditary problems in purebred dogs
E.How does the consumption of soft drinks promote obesity
if the hypothesis is wrong, scientists must be able to demonstrate that it is wrong - Answer
When researchers say that a scientific hypothesis must be falsifiable they mean
A. The hypothesis must be proved correct before it is accepted as truth
B. The hypothesis has already withstood many experimental tests
C. They have an idea about what will happen to one variable if another variable changes
D. appropriate data can prove without question that the hypothesis is correct
E. if the hypothesis is wrong, scientists must be able to demonstrate that it is wrong
It has unique genes and unusual cells - Answer Which of the following characteristics would
not qualify an animal as a model organism
,A. it has rapid development
B. It has a small adult size
C. It has a rapid life cycle
D. It has unique genes and unusual cells
E. It is easy to raise in the laboratory
Human ABO blood types - Answer Which of the following represents an example of
qualitative phenotypic variation?
The length of peoples toes
the body size of pigeons
Human ABO blood types
The birth weight of humans
The number of leaves on oak trees
48% - Answer A population of mice is at Hardy-Weinberg equilibrium at a gene locus that
controls fun color. The locus has two alleles, M and m. A genetic analysis of one population
reveals that 60% of its gametes carry the M allele. What percentage of mice contains both the
M and m alleles?
60%
48%
40%
36%
16%
.49 AA, .42 Aa, and .09 aa - Answer If the genotype frequencies in a population are .60
AA, .20 Aa, and .20 aa, and if the requirements of the Hardy-weinberg principle apply, the
genotype frequencies in the offspring generation will be?
, .60 AA, .20 Aa. and .20 aa
.36 AA, .60 Aa, and .04 aa
.49 AA, .42 Aa, and .09 aa
.70 AA, .00 Aa, and .30 aa
.64 AA, .32 Aa, and .04 aa
Mutations are so rare that mutated alleles are greatly outnumbered by non-mutated alleles -
Answer The reason spontaneous mutations do not have an immediate effect on allele
frequencies in a large population is that:
Mutation are random events, and mutations may be either beneficial or harmful
Mutation usually occur in males and have little effect on the eggs
Many mutation exert their effects after an organism has stopped reproducing
Mutations are so rare that mutated alleles are greatly outnumbered by non-mutated alleles
Most mutation do not change the amino acid sequence of a protein
Genetic drift - Answer The phenomenon in which change events cause unpredictable
changes in allele frequencies is called
Gene flow
Genetic drift
Inbreeeding
Balanced polymorphism
Correct Answers 2026 Update.
a cell - Answer What is the lowest level of biological organization that biologist considers to
be alive?
A. Protein
B. DNA
C. a Cell
D. A multicellular organism
E. A population of organisms
order - Answer Which category falls immediately below "class" in they systematic hierarchy?
A. Species
B. Order
C. Family
D. Genus
E. Phylum
using controlled experiments to test falsifiable hypotheses - Answer Which of the following
represents the application of the "scientific method"
A. Comparing one experimental subject to one control subject
B.Believing an explanation that is too complex to be tested
C. using controlled experiments to test falsifiable hypotheses
D. Developing one testable hypothesis to explain a natural phenomenon
E. Observing a once-in-a-lifetime event under natural conditions
life cycle - Answer Houseflies develop through a series of programmed stages from egg, to
larva, to pupa, to flying adult. This series of stages is called.
A. artificial selection
B. Respiration
C. homeostasis
D. life cycle
,E. metabolism
Receptor - Answer Which structor allows living organisms to detect changes in the
environment
A. Protein
B. Receptor
C. Gene
D. RNA
E. Nucleus
Mutation in genes produce new variations in a population - Answer Which of the following is
not a component of Darwin's theory as he understood it
A. Some individuals in a population survive longer than others
B. Sone individuals in a population reproduce more than others
C. Heritable variations allow some individuals to compete more successfully for resources
D. Mutation in genes produce new variations in a population
E. Some new variations are passed to the next generation.
How did life begin? - Answer Which of the following questions best exemplifies basic
research
A. How did life begin?
B. How does alcohol intake affect aging?
C. How fast does H1N1 flu spread among humans
D.How can we reduce hereditary problems in purebred dogs
E.How does the consumption of soft drinks promote obesity
if the hypothesis is wrong, scientists must be able to demonstrate that it is wrong - Answer
When researchers say that a scientific hypothesis must be falsifiable they mean
A. The hypothesis must be proved correct before it is accepted as truth
B. The hypothesis has already withstood many experimental tests
C. They have an idea about what will happen to one variable if another variable changes
D. appropriate data can prove without question that the hypothesis is correct
E. if the hypothesis is wrong, scientists must be able to demonstrate that it is wrong
It has unique genes and unusual cells - Answer Which of the following characteristics would
not qualify an animal as a model organism
,A. it has rapid development
B. It has a small adult size
C. It has a rapid life cycle
D. It has unique genes and unusual cells
E. It is easy to raise in the laboratory
Human ABO blood types - Answer Which of the following represents an example of
qualitative phenotypic variation?
The length of peoples toes
the body size of pigeons
Human ABO blood types
The birth weight of humans
The number of leaves on oak trees
48% - Answer A population of mice is at Hardy-Weinberg equilibrium at a gene locus that
controls fun color. The locus has two alleles, M and m. A genetic analysis of one population
reveals that 60% of its gametes carry the M allele. What percentage of mice contains both the
M and m alleles?
60%
48%
40%
36%
16%
.49 AA, .42 Aa, and .09 aa - Answer If the genotype frequencies in a population are .60
AA, .20 Aa, and .20 aa, and if the requirements of the Hardy-weinberg principle apply, the
genotype frequencies in the offspring generation will be?
, .60 AA, .20 Aa. and .20 aa
.36 AA, .60 Aa, and .04 aa
.49 AA, .42 Aa, and .09 aa
.70 AA, .00 Aa, and .30 aa
.64 AA, .32 Aa, and .04 aa
Mutations are so rare that mutated alleles are greatly outnumbered by non-mutated alleles -
Answer The reason spontaneous mutations do not have an immediate effect on allele
frequencies in a large population is that:
Mutation are random events, and mutations may be either beneficial or harmful
Mutation usually occur in males and have little effect on the eggs
Many mutation exert their effects after an organism has stopped reproducing
Mutations are so rare that mutated alleles are greatly outnumbered by non-mutated alleles
Most mutation do not change the amino acid sequence of a protein
Genetic drift - Answer The phenomenon in which change events cause unpredictable
changes in allele frequencies is called
Gene flow
Genetic drift
Inbreeeding
Balanced polymorphism
