ASU BIO 181 EXAM 100 COMPREHENSIVE
EXAM 2026 FULL QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED
◉ What type of chemical bond is important for stabilizing alpha-
helix or Beta-sheets between backbone atoms of amino acids in
close proximity to one another?
Answer: Hydrogen bonds
◉ If a protein is subject to changes in temperature, pH, or exposure
to chemicals this may result in:
Answer: Denaturation
◉ The image below shows what type of chemical compound?
Answer: Triacylglycerol
◉ The image below shows what kind of compound?
Answer: Lipid
A sterol, specifically cholesterol
◉ What kinds of structure will the following compound, a
phospholipid, form in a watery environment?
,Answer: Membrane
Micelle
Liposome
◉ With the complementarity of nucleic acids in mind (in DNA
strands) answer the following question.
A particular stretch of DNA is sequenced and found to be 40%
Guanine. What percentage will be Adenine?
Answer: 10%
◉ Which of the following macromolecules is most likely to form into
a double helix?
Answer: Nucleic Acid: DNA
◉ Which side will generally have a greater amount of matter
present? The reactants or the products?
Answer: Both will be equal.
◉ When plants capture energy in the photons of sunlight and
convert that energy into the chemical bonds of organic molecules,
are they creating new energy?
Answer: No, the energy is being transferred from one form into
another. But no new energy is being created.
, ◉ The Second Law of Thermodynamics suggest that the energy in a
system will...
Answer: tend to become more dispersed over time.
◉ Biological systems sometimes appear on the surface to break the
Second Law of Thermodynamics - by seemingly increasing the order
in the overall system. They don't. Why?
Answer: a. Earth (and living things on it) are not a closed system.
The sun's constant input of energy in the form of photons is
harnessed by living things to create internal order within
themselves. But without such a constant input of energy, most
biological systems on earth would break down.
b. The Second Law tells us that no natural process can occur unless
it is also associated with an increase in the entropy of the universe. A
living organism (such as an animal or plant) brings in matter and
energy from its environment and uses this to create greater order
within its body: the processes of life. But it is important to keep in
mind that all animals and plants are also part of a larger system of
the environment around them. While creating a small 'pocket' of
order, the processes of life (metabolism, movement, etc..) releases
heat into the environment - thus increasing the entropy of the
universe and following the 2nd law.
◉ As entropy increases there will be more useful energy to do
'work'. True or false?
EXAM 2026 FULL QUESTIONS AND CORRECT
ANSWERS ALREADY PASSED
◉ What type of chemical bond is important for stabilizing alpha-
helix or Beta-sheets between backbone atoms of amino acids in
close proximity to one another?
Answer: Hydrogen bonds
◉ If a protein is subject to changes in temperature, pH, or exposure
to chemicals this may result in:
Answer: Denaturation
◉ The image below shows what type of chemical compound?
Answer: Triacylglycerol
◉ The image below shows what kind of compound?
Answer: Lipid
A sterol, specifically cholesterol
◉ What kinds of structure will the following compound, a
phospholipid, form in a watery environment?
,Answer: Membrane
Micelle
Liposome
◉ With the complementarity of nucleic acids in mind (in DNA
strands) answer the following question.
A particular stretch of DNA is sequenced and found to be 40%
Guanine. What percentage will be Adenine?
Answer: 10%
◉ Which of the following macromolecules is most likely to form into
a double helix?
Answer: Nucleic Acid: DNA
◉ Which side will generally have a greater amount of matter
present? The reactants or the products?
Answer: Both will be equal.
◉ When plants capture energy in the photons of sunlight and
convert that energy into the chemical bonds of organic molecules,
are they creating new energy?
Answer: No, the energy is being transferred from one form into
another. But no new energy is being created.
, ◉ The Second Law of Thermodynamics suggest that the energy in a
system will...
Answer: tend to become more dispersed over time.
◉ Biological systems sometimes appear on the surface to break the
Second Law of Thermodynamics - by seemingly increasing the order
in the overall system. They don't. Why?
Answer: a. Earth (and living things on it) are not a closed system.
The sun's constant input of energy in the form of photons is
harnessed by living things to create internal order within
themselves. But without such a constant input of energy, most
biological systems on earth would break down.
b. The Second Law tells us that no natural process can occur unless
it is also associated with an increase in the entropy of the universe. A
living organism (such as an animal or plant) brings in matter and
energy from its environment and uses this to create greater order
within its body: the processes of life. But it is important to keep in
mind that all animals and plants are also part of a larger system of
the environment around them. While creating a small 'pocket' of
order, the processes of life (metabolism, movement, etc..) releases
heat into the environment - thus increasing the entropy of the
universe and following the 2nd law.
◉ As entropy increases there will be more useful energy to do
'work'. True or false?
