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How are fats, phospholipids, and steroids alike?


A) They are all solid at room temperature.
B) They each contain a polar phosphate group.
C) They each contain only 1 fatty acid.
D) They do not dissolve in water.
E) They all contain at least one carbon ring.

F) A) and E)
G) A) and D)

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List the function of proteins that are formed from a combination of amino acids.

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Functions of proteins include:
1. suppor...

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Be has an atomic number of 4 and an atomic mass of 9. How many protons does it have?


A) 4
B) 5
C) 9
D) 13
E) 7

F) C) and E)
G) D) and E)

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How many elements occur naturally?


A) 112
B) 92
C) 64
D) 32
E) 6

F) C) and D)
G) All of the above

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A fat contains how many fatty acids?


A) 1
B) 2
C) 3
D) 4
E) 5

F) A) and B)
G) A) and C)

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The monomer unit of a protein is


A) fatty acids.
B) amino acids.
C) monosaccharides.
D) polysaccharides.
E) nucleic acids.

F) C) and D)
G) A) and B)

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What substance is used in medicine to produce various images of organs and tissues?


A) A mixture
B) A tracer
C) An emulsion
D) A colloid
E) A sensor

F) All of the above
G) B) and E)

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CaCl2 is a salt that forms as the result of what type of bond?


A) covalent
B) hydrogen
C) polar
D) non-polar
E) ionic

F) A) and C)
G) A) and B)

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A solution containing 0.00001 moles of H+ has a pH of


A) 3
B) 5
C) 7
D) 9
E) 11

F) A) and B)
G) B) and C)

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Sugars with three to seven carbon atoms are called


A) monosaccharides.
B) disaccharides.
C) trisaccharides.
D) polysaccharides.
E) steroids.

F) C) and D)
G) A) and D)

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What is the symbol for sodium?


A) Na
B) S
C) So
D) N
E) Dm

F) B) and D)
G) A) and D)

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When an ATP molecule is used to supply energy, which of the following occurs?


A) a phosphate bond is added
B) a phosphate bond is broken
C) oxygen is removed
D) oxygen is added
E) an adenine is added

F) All of the above
G) A) and E)

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Why is He positioned above Ne in the periodic table?


A) They both have the same atomic mass.
B) They both have the same number of electrons in their outermost orbital.
C) They both have a full outermost orbital.
D) They both have the same atomic number.
E) They both have the same number of protons in their nuclei.

F) B) and C)
G) A) and E)

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