Question 1

Human body cells are approximately ________ water.

Accepted Answer

A)  95-99%
B)  25-35%
C)  50-55%
D)  70-95%E) None of the above
F) A) and C)

Question 2

Which of the following is NOT a potential impact of ocean acidification?

Accepted Answer

A)  Decreasing H⁺ concentrations
B)  Coral bleaching
C)  Changes in metabolism of marine animals
D)  Increasing carbonic acid concentrationsE) A) and B)
F) None of the above

Question 3

The way Earth moves about the sun is most like ________.

Accepted Answer

A)  a neutron and electron moving around a proton
B)  an electron moving around the nucleus of an atom
C)  a proton moving about an electron
D)  a neutron moving about a protonE) B) and C)
F) A) and B)

Question 4

The graph below shows data regarding radioactive decay of carbon-14.If decay continues to occur normally,how much C-14 will remain after 22,800 years?

Accepted Answer

A)  25%
B)  12.5%
C)  6) 25%
D)  3) 125%E) B) and C)
F) None of the above

Question 5

The hydrogen and oxygen atoms of a water molecule are held together by ________ bonds.

Accepted Answer

A)  ionic
B)  hydrogen
C)  covalent
D)  polarE) C) and D)
F) A) and B)

Question 6

When Heather grabbed the glass of ice water,the ice cubes were floating at the top.Why were the ice cubes floating in the water?

Accepted Answer

A)  Water can store large amounts of heat.
B)  Water can moderate temperatures through evaporative cooling.
C)  The density of water decreases when it freezes.
D)  Water has a cohesive nature.E) None of the above
F) A) and D)

Exam 2: Essential Chemistry for Biology

Which of the following is NOT a potential impact of ocean acidification?

Correct Answer
verified

When Heather grabbed the glass of ice water,the ice cubes were floating at the top.Why were the ice cubes floating in the water?

Correct Answer
verified

Human body cells are approximately ________ water.

Correct Answer
verified

The way Earth moves about the sun is most like ________.

Correct Answer
verified

The graph below shows data regarding radioactive decay of carbon-14.If decay continues to occur normally,how much C-14 will remain after 22,800 years?

Correct Answer
verified

The hydrogen and oxygen atoms of a water molecule are held together by ________ bonds.

Correct Answer
verified

Exam 2: Essential Chemistry for Biology

Which of the following is NOT a potential impact of ocean acidification?

Correct AnswerverifiedShow Answer

When Heather grabbed the glass of ice water,the ice cubes were floating at the top.Why were the ice cubes floating in the water?

Correct AnswerverifiedShow Answer

Human body cells are approximately ________ water.

Correct AnswerverifiedShow Answer

The way Earth moves about the sun is most like ________.

Correct AnswerverifiedShow Answer

The graph below shows data regarding radioactive decay of carbon-14.If decay continues to occur normally,how much C-14 will remain after 22,800 years?

Correct AnswerverifiedShow Answer

The hydrogen and oxygen atoms of a water molecule are held together by ________ bonds.

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
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