Unit Test — Unit test Answers
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How many covalent bonds can a typical carbon atom form?
A
oneB
twoC
threeD
four22
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If Tyler does not eat a diet that includes essential amino acids, his cells will not be able to build
A
nucleic acids.B
certain proteins.C
cell membranes.D
certain carbohydrates.23
Which of the following represents an organic compound?
A
O is bonded below left and right to H.
B
S is double bonded above and left to O, and single bonded right and below to O H.
C
Two C atoms are double-bonded together, and single bonded above left, above right, below left, and below right to H.
D
N is triple-bonded to N.
24
Glycogen is an energy-storage molecule in humans. A hormone that is called insulin controls the storage of glycogen in the liver. Insulin is made up of amino acids. Which statement correctly identifies the types of macromolecules that are described?
A
Glycogen is a protein, and insulin is a lipid.B
Glycogen is a protein, and insulin is a protein.C
Glycogen is a carbohydrate, and insulin is a lipid.D
Glycogen is a carbohydrate, and insulin is a protein.25
The compound butanol has the following structural formula.Which of these is a structural isomer of butanol?
A
A string of 4 C atoms are bonded above, below, left and right to H.
B
A string of 4 C atoms is bonded above, below, left, and right to H, except the second C, which is bonded below to O, which is bonded below to H.
C
A string of 4 C atoms is bonded above, below, left, and right to H, but the chain is interrupted between the first and second C, which are bonded to an O between them.
D
A string of 4 C atoms is bonded above, below, and left to H, except the last C has no H below and is double-bonded to an O to the right.
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