©JASONMcCONNELL 2025 ALL RIGHTS RESERVED
BIO 101 - Exam 1 (Chapters 1-4) Questions
and Answers 100% Pass
The polar nature of water molecules - ANS The fact that salt dissolves in water is BEST
explained by
It can absorb a lot of energy without changing temperature - ANS What is meant by saying
water has a high specific heat?
detect brain tumors - ANS Radioactive isotopes are useful biological tools that are often used
to
has equal concentration of H+ and OH- ions - ANS If a substance measures 7 (neutral) on the
pH scale, that substance
False - ANS Isotopes are atoms of the same element that vary in the number of protons. True
or False?
The bond between O of one water molecule and H of a second water molecule - ANS Which
of the following is an example of hydrogen bonding?
liquid water - ANS Which of the following is the most dense?
1
, ©JASONMcCONNELL 2025 ALL RIGHTS RESERVED
nonpolar covalent bond - ANS Which of the following would be least affected by the
presence of water?
Antioxidants stop the chain reaction of cellular damage caused by free radicals -
ANS Scientists now recommend a diet rich in antioxidants to stay healthy. What occurs at the
atomic level to explain the reasoning behind this recommendation?
surface tension of water - ANS Your friend does a belly flop into the pool. The stinging pain
he feels is most likely due to the
False - ANS Water molecules are held together by ionic bonds.True or False?
hydrogen bond - ANS Which of the following best explains the attraction of water molecules
to each other?
2 - ANS If sulfur has an atomic number of 16, how many covalent bonds does it form?
You burn your finger and pull your hand away from the very hot handle - ANS The specific
heat of water is ten times greater than that of iron. You place a metal pot full of water on the
stove to heat it up. You touch the metal handle of the pot when the water is still only
lukewarm. Which of the following BEST describes what will happen?
A and C - ANS Hydrophilic molecules
gain or loss of electrons - ANS How does one explain the formation of ions?
water takes up a great deal of heat in changing from its liquid state to its gaseous state -
ANS Sweating is a useful cooling device for humans because
2
BIO 101 - Exam 1 (Chapters 1-4) Questions
and Answers 100% Pass
The polar nature of water molecules - ANS The fact that salt dissolves in water is BEST
explained by
It can absorb a lot of energy without changing temperature - ANS What is meant by saying
water has a high specific heat?
detect brain tumors - ANS Radioactive isotopes are useful biological tools that are often used
to
has equal concentration of H+ and OH- ions - ANS If a substance measures 7 (neutral) on the
pH scale, that substance
False - ANS Isotopes are atoms of the same element that vary in the number of protons. True
or False?
The bond between O of one water molecule and H of a second water molecule - ANS Which
of the following is an example of hydrogen bonding?
liquid water - ANS Which of the following is the most dense?
1
, ©JASONMcCONNELL 2025 ALL RIGHTS RESERVED
nonpolar covalent bond - ANS Which of the following would be least affected by the
presence of water?
Antioxidants stop the chain reaction of cellular damage caused by free radicals -
ANS Scientists now recommend a diet rich in antioxidants to stay healthy. What occurs at the
atomic level to explain the reasoning behind this recommendation?
surface tension of water - ANS Your friend does a belly flop into the pool. The stinging pain
he feels is most likely due to the
False - ANS Water molecules are held together by ionic bonds.True or False?
hydrogen bond - ANS Which of the following best explains the attraction of water molecules
to each other?
2 - ANS If sulfur has an atomic number of 16, how many covalent bonds does it form?
You burn your finger and pull your hand away from the very hot handle - ANS The specific
heat of water is ten times greater than that of iron. You place a metal pot full of water on the
stove to heat it up. You touch the metal handle of the pot when the water is still only
lukewarm. Which of the following BEST describes what will happen?
A and C - ANS Hydrophilic molecules
gain or loss of electrons - ANS How does one explain the formation of ions?
water takes up a great deal of heat in changing from its liquid state to its gaseous state -
ANS Sweating is a useful cooling device for humans because
2
