Ku Bio 150 Questions And ANSWERs With Verified
Solutions Latest Updated
Upon completion of BIO150 you should understand _________? - ANSWER -all of
above
A hypothesis _________. - ANSWER -along with other proven hypotheses can help
support a theory
The phylogenetic tree below represents a phylogeny of different species of butterflies.
What is represented by the circled area on the phylogeny? - ANSWER -a common
ancestor
MOST of life's diversity is: - ANSWER -microbial
Based on the characteristics of living organisms, which of the following things would
NOT be considered "alive"? - ANSWER -None of the other ANSWER options is correct.
When carrying out a controlled experiment, it is important to - ANSWER -change only
one variable at a time.
Currently, antibiotic-resistant bacteria are a major concern for all of us. Antibiotic
bacteria have arisen through natural selection. - ANSWER -true
In Pasteur's experiment showing that living organisms arise from other living
organisms, which one of the following statements MOST accurately describes Pasteur's
hypothesis? - ANSWER -If microbes arise from nonliving matter, they should appear
spontaneously in sterile broth.
Which of the following is NOT a key feature of individual cells? - ANSWER -the
presence of a nucleus
Which of the following types of organisms are based on cellular life? - ANSWER -all
living organisms
Which one of the following statements about evolution is INCORRECT? - ANSWER
Evolution led to the branches in the tree of life, but development of the organisms within
a single branch has subsequently remained constant.
, The metabolic pathway that harvests energy molecules from glucose is highly
conserved across many different organisms. From this observation, scientists conclude
that: - ANSWER -they arose early in the evolution of life.
Which of the following cellular terms are mismatched? - ANSWER -Nucleus / amino
acids
A major difference between eukaryotic cells and prokaryotic cells is that: - ANSWER
eukaryotic cells have a nucleus and prokaryotic cells do not.
Transcription is the process by which: - ANSWER -RNA is synthesized from DNA.
A boy observes a robin outside of his window. He notices the robin repeatedly cocks its
head to one side before pecking the ground. The boy suspects that when the robin
cocks its head it is actually listening for worms or insects underground. How could the
boy test his hypothesis about robins and worms? - ANSWER -All of these experiments
would test the boy's hypothesis
The designation of a magnesium ion as Mg2+ indicates an atom that has: - ANSWER
lost two electrons and is positively charged.
A polar bond is due to: - ANSWER -uneven sharing of electrons in a covalent bond.
When two atoms form a covalent bond, they share electrons from all of their orbitals. All
of their orbitals, in turn, combine to form a single molecular orbital. - ANSWER -false
An atom with three electrons has: - ANSWER -two occupied orbitals, one of which has
two electrons and the other has one.
Which of the following is an example of a hydrogen bond? - ANSWER -the bond that
forms between hydrogen and oxygen atoms within different water molecules
An ionic interaction, such as the interaction between Na+ and Cl-, is considered a
covalent bond. - ANSWER -false
Which one of the following is maintained during a chemical reaction? - ANSWER -the
number and identity of the atoms present in the reactants
The atom: - ANSWER -all of choices are correct
Of the following types of bonds between atoms, which is the STRONGEST? -
ANSWER -covalent bond
, All organisms use which of the following molecules to carry out metabolic reactions? -
ANSWER -ATP
What is a hypothesis? - ANSWER -a tentative explanation that can be tested by
experiments
Santiago Elena and Richard Lenski performed long-term artificial selection experiments
with bacteria. Over time, the bacteria evolved an ability to use succinate as a food
source. Which of the following is a conclusion of these experiments? - ANSWER -All of
the ANSWER options are correct.
A controlled way of asking and ANSWERing unbiased questions to test a hypothesis is
called a(n) - ANSWER -experiment
Which of the following CORRECTLY pairs the particles of an atom with their physical
properties? - ANSWER -proton-positively charged; neutron-uncharged;
electronnegatively charged
For an atom that is NOT an ion, which of the following must be TRUE? - ANSWER The
number of electrons equals the number of protons.
14C is an isotope of carbon that possesses: - ANSWER -6 protons, 8 neutrons, and 6
electrons
Which component of an atom has the SMALLEST mass? - ANSWER -electron
The most common isotope of oxygen has 8 protons and an atomic mass of 16. How
many neutrons are present in the oxygen nucleus? - ANSWER -8
The most common isotope of oxygen has an atomic mass of 16 (16O). An isotope with
an atomic mass of 18 (18O) is also stable. How many valence electrons are present in
18O? - ANSWER -same as in 16O
What differentiates isotopes of the same element? - ANSWER -neutrons
Which of the following bonds rely on the attraction of positive and negative charges? -
ANSWER -ionic an hydrogen
A woman's doctor tells her to gargle with salt water. She stirs a tablespoon of salt into a
cup of warm water and watches it dissolve. Why does the salt dissolve in water? -
ANSWER -The positive hydrogen atoms in water molecules are attracted to chlorine
ions, and the negative oxygen atoms in water molecules are attracted to sodium ions.
A pair of shared valence electrons is referred to as a(n): - ANSWER -covalent bond
Solutions Latest Updated
Upon completion of BIO150 you should understand _________? - ANSWER -all of
above
A hypothesis _________. - ANSWER -along with other proven hypotheses can help
support a theory
The phylogenetic tree below represents a phylogeny of different species of butterflies.
What is represented by the circled area on the phylogeny? - ANSWER -a common
ancestor
MOST of life's diversity is: - ANSWER -microbial
Based on the characteristics of living organisms, which of the following things would
NOT be considered "alive"? - ANSWER -None of the other ANSWER options is correct.
When carrying out a controlled experiment, it is important to - ANSWER -change only
one variable at a time.
Currently, antibiotic-resistant bacteria are a major concern for all of us. Antibiotic
bacteria have arisen through natural selection. - ANSWER -true
In Pasteur's experiment showing that living organisms arise from other living
organisms, which one of the following statements MOST accurately describes Pasteur's
hypothesis? - ANSWER -If microbes arise from nonliving matter, they should appear
spontaneously in sterile broth.
Which of the following is NOT a key feature of individual cells? - ANSWER -the
presence of a nucleus
Which of the following types of organisms are based on cellular life? - ANSWER -all
living organisms
Which one of the following statements about evolution is INCORRECT? - ANSWER
Evolution led to the branches in the tree of life, but development of the organisms within
a single branch has subsequently remained constant.
, The metabolic pathway that harvests energy molecules from glucose is highly
conserved across many different organisms. From this observation, scientists conclude
that: - ANSWER -they arose early in the evolution of life.
Which of the following cellular terms are mismatched? - ANSWER -Nucleus / amino
acids
A major difference between eukaryotic cells and prokaryotic cells is that: - ANSWER
eukaryotic cells have a nucleus and prokaryotic cells do not.
Transcription is the process by which: - ANSWER -RNA is synthesized from DNA.
A boy observes a robin outside of his window. He notices the robin repeatedly cocks its
head to one side before pecking the ground. The boy suspects that when the robin
cocks its head it is actually listening for worms or insects underground. How could the
boy test his hypothesis about robins and worms? - ANSWER -All of these experiments
would test the boy's hypothesis
The designation of a magnesium ion as Mg2+ indicates an atom that has: - ANSWER
lost two electrons and is positively charged.
A polar bond is due to: - ANSWER -uneven sharing of electrons in a covalent bond.
When two atoms form a covalent bond, they share electrons from all of their orbitals. All
of their orbitals, in turn, combine to form a single molecular orbital. - ANSWER -false
An atom with three electrons has: - ANSWER -two occupied orbitals, one of which has
two electrons and the other has one.
Which of the following is an example of a hydrogen bond? - ANSWER -the bond that
forms between hydrogen and oxygen atoms within different water molecules
An ionic interaction, such as the interaction between Na+ and Cl-, is considered a
covalent bond. - ANSWER -false
Which one of the following is maintained during a chemical reaction? - ANSWER -the
number and identity of the atoms present in the reactants
The atom: - ANSWER -all of choices are correct
Of the following types of bonds between atoms, which is the STRONGEST? -
ANSWER -covalent bond
, All organisms use which of the following molecules to carry out metabolic reactions? -
ANSWER -ATP
What is a hypothesis? - ANSWER -a tentative explanation that can be tested by
experiments
Santiago Elena and Richard Lenski performed long-term artificial selection experiments
with bacteria. Over time, the bacteria evolved an ability to use succinate as a food
source. Which of the following is a conclusion of these experiments? - ANSWER -All of
the ANSWER options are correct.
A controlled way of asking and ANSWERing unbiased questions to test a hypothesis is
called a(n) - ANSWER -experiment
Which of the following CORRECTLY pairs the particles of an atom with their physical
properties? - ANSWER -proton-positively charged; neutron-uncharged;
electronnegatively charged
For an atom that is NOT an ion, which of the following must be TRUE? - ANSWER The
number of electrons equals the number of protons.
14C is an isotope of carbon that possesses: - ANSWER -6 protons, 8 neutrons, and 6
electrons
Which component of an atom has the SMALLEST mass? - ANSWER -electron
The most common isotope of oxygen has 8 protons and an atomic mass of 16. How
many neutrons are present in the oxygen nucleus? - ANSWER -8
The most common isotope of oxygen has an atomic mass of 16 (16O). An isotope with
an atomic mass of 18 (18O) is also stable. How many valence electrons are present in
18O? - ANSWER -same as in 16O
What differentiates isotopes of the same element? - ANSWER -neutrons
Which of the following bonds rely on the attraction of positive and negative charges? -
ANSWER -ionic an hydrogen
A woman's doctor tells her to gargle with salt water. She stirs a tablespoon of salt into a
cup of warm water and watches it dissolve. Why does the salt dissolve in water? -
ANSWER -The positive hydrogen atoms in water molecules are attracted to chlorine
ions, and the negative oxygen atoms in water molecules are attracted to sodium ions.
A pair of shared valence electrons is referred to as a(n): - ANSWER -covalent bond
