BIO 148 FINAL EXAM QUESTIONS
AND ANSWERS 2026
What description of an organism includes characteristics shared by all living things? -
ANSWERSMade up of one or more cells: carries out reproduction: processes genetic
and environmental information.
All living things are made up of many cells? T/F - ANSWERSFalse
What is not true about all living things? - ANSWERSThey don't all need oxygen, they
don't all breathe, they don't all move, and they don't all have a nucleus.
All eukaryotic cells have a cell membrane? T/F - ANSWERSTrue, all cells have a cell
membrane.
All eukaryotic cells have a cell wall? T/F - ANSWERSFalse, animal cells and some
protist cells do not have a cell wall.
Variation is necessary for natural selection to occur? T/F - ANSWERSTrue
What best describes the difference between prokaryotes and eukaryotes? -
ANSWERSEukaryotic cells have a membrane-bound nucleus: prokaryotic cells do not.
What can be used to decide whether two populations are the same or different species?
- ANSWERSThe morphological species concept, the biological species concept and the
phylogenetic species concept
A population is a group of individuals of the same species. According to the theory of
natural selection, what is likely to happen to a population when a change occurs in its
environment (for example, the amount of rainfall decreases or the temperature
increases)? - ANSWERSThe individuals that have traits better suited to the changed
environment would be more likely to survive and reproduce than those with less suitable
traits.
Some organisms, such as a chimpanzee and a human, have many similarities. Others,
such as a chicken and an oak tree, have fewer similarities. What is TRUE about the
ancestors of these organisms? - ANSWERSChimpanzees, humans, chickens, and oak
trees all share an ancient common ancestor.
What is true about living species and extinct species? - ANSWERSA species living
today and an extinct species could share a common ancestor that lived a very long time
ago, even if the two species have few similarities
, Humans, butterflies, and trees are all living things. In which of these organisms would
you find DNA molecules? - ANSWERSAll of them.
What is not a shared characteristic of life? - ANSWERSEnergy is acquired for
movement
Which of the following would be a possible explanation for the molecular origin of a new
allele in a population of mice? - ANSWERSDNA polymerase skipped three nucleotides
in a gamete-producing cell during replication causing a
mutation before meiosis
Which of the following describes a major difference between eukaryotes and
prokaryotes? - ANSWERSEukaryotic cells have a membrane-bound nucleus;
prokaryotic cells do not
How do you tell which animals are more closely related? - ANSWERSWhen they share
a common ancestor more recently
Where is the common ancestor located in a phylogeny? - ANSWERSWhere two
species meet
DNA is synthesized through a process known as_______ -
ANSWERSsemiconservative replication
How do prokaryotes do cell division - ANSWERSBy Fission
What is true of protists - ANSWERScontain a nucleus
The kingdom composed of eukaryotic heterotrophs with many members obtaining
energy and nutrients from dead organic matter is the kingdom - ANSWERSFungi
Evolutionary change occurs in______. Natural selection acts on_______. -
ANSWERSpopulations, individuals
The monomer unit of DNA is a - ANSWERSNucleotide
What is the final result of mitosis in a diploid organism? - ANSWERSgenetically identical
2n somatic cells
In a DNA double helix, the chemical bonds that form between the complementary
nitrogenous bases are - ANSWERSHydrogen bonds
A man and woman are both of normal pigmentation and have a one child out of three
who is albino (without melanin pigmentation). Albinism is an autosomal (not sex-linked)
recessive trait. What are the genotypes of the albino's parents? - ANSWERSBoth
parents must be heterozygous
AND ANSWERS 2026
What description of an organism includes characteristics shared by all living things? -
ANSWERSMade up of one or more cells: carries out reproduction: processes genetic
and environmental information.
All living things are made up of many cells? T/F - ANSWERSFalse
What is not true about all living things? - ANSWERSThey don't all need oxygen, they
don't all breathe, they don't all move, and they don't all have a nucleus.
All eukaryotic cells have a cell membrane? T/F - ANSWERSTrue, all cells have a cell
membrane.
All eukaryotic cells have a cell wall? T/F - ANSWERSFalse, animal cells and some
protist cells do not have a cell wall.
Variation is necessary for natural selection to occur? T/F - ANSWERSTrue
What best describes the difference between prokaryotes and eukaryotes? -
ANSWERSEukaryotic cells have a membrane-bound nucleus: prokaryotic cells do not.
What can be used to decide whether two populations are the same or different species?
- ANSWERSThe morphological species concept, the biological species concept and the
phylogenetic species concept
A population is a group of individuals of the same species. According to the theory of
natural selection, what is likely to happen to a population when a change occurs in its
environment (for example, the amount of rainfall decreases or the temperature
increases)? - ANSWERSThe individuals that have traits better suited to the changed
environment would be more likely to survive and reproduce than those with less suitable
traits.
Some organisms, such as a chimpanzee and a human, have many similarities. Others,
such as a chicken and an oak tree, have fewer similarities. What is TRUE about the
ancestors of these organisms? - ANSWERSChimpanzees, humans, chickens, and oak
trees all share an ancient common ancestor.
What is true about living species and extinct species? - ANSWERSA species living
today and an extinct species could share a common ancestor that lived a very long time
ago, even if the two species have few similarities
, Humans, butterflies, and trees are all living things. In which of these organisms would
you find DNA molecules? - ANSWERSAll of them.
What is not a shared characteristic of life? - ANSWERSEnergy is acquired for
movement
Which of the following would be a possible explanation for the molecular origin of a new
allele in a population of mice? - ANSWERSDNA polymerase skipped three nucleotides
in a gamete-producing cell during replication causing a
mutation before meiosis
Which of the following describes a major difference between eukaryotes and
prokaryotes? - ANSWERSEukaryotic cells have a membrane-bound nucleus;
prokaryotic cells do not
How do you tell which animals are more closely related? - ANSWERSWhen they share
a common ancestor more recently
Where is the common ancestor located in a phylogeny? - ANSWERSWhere two
species meet
DNA is synthesized through a process known as_______ -
ANSWERSsemiconservative replication
How do prokaryotes do cell division - ANSWERSBy Fission
What is true of protists - ANSWERScontain a nucleus
The kingdom composed of eukaryotic heterotrophs with many members obtaining
energy and nutrients from dead organic matter is the kingdom - ANSWERSFungi
Evolutionary change occurs in______. Natural selection acts on_______. -
ANSWERSpopulations, individuals
The monomer unit of DNA is a - ANSWERSNucleotide
What is the final result of mitosis in a diploid organism? - ANSWERSgenetically identical
2n somatic cells
In a DNA double helix, the chemical bonds that form between the complementary
nitrogenous bases are - ANSWERSHydrogen bonds
A man and woman are both of normal pigmentation and have a one child out of three
who is albino (without melanin pigmentation). Albinism is an autosomal (not sex-linked)
recessive trait. What are the genotypes of the albino's parents? - ANSWERSBoth
parents must be heterozygous
