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Ongoing Review 4
Test Description: Part II
Instructions: Answer all questions to get your test result.
1) A basic sample has a pH range ______________.
A
of exactly 7
B
between 0 and 7
C
of exactly 0
D
between 7 and 14
2) The atmosphere of Earth is an example of a _____________ solution.
A
gas-gas
B
gas-liquid
C
solid-liquid
D
liquid-liquid
3) Which of the following mixtures is NOT an example of a substance?
A
brass
B
pizza
C
air
D
drinking water
4) When a hydroxyl group is substituted for a hydrogen atom in a hydrocarbon, what type of molecule results?
A
a carboxylic acid
B
an alcohol
C
an amine
D
a polymer
5) Organic compounds
A
all contain amino acids
B
cannot be made in the laboratory
C
occur in living organisms
D
all contain hydrogen
6) When both -NH2 and -COOH replace hydrogen atoms on the same carbon atom, a(n) _____________ is formed.
A
carboxylic acid
B
carbohydrate
C
an alcohol
D
amino acid
7) Which of the following factors does NOT explain why carbon can form so many compounds?
A
The same atoms can be grouped in different ways, forming isomers.
B
Carbon can form four single bonds.
C
Carbon has six protons in its nucleus.
D
Carbon can bond in chains and rings.
8) Which of the following functions is NOT a role of proteins in the body?
A
make up fingernails and hair
B
in the form of hemoglobin, carry oxygen in the blood
C
store energy in the form of glycogen
D
catalysts in cell reactions
9) When amino acids are linked together, the molecule formed is a
A
polyalcohol
B
protein
C
carbohydrates
D
lipid
10) All organic compounds contain ______________.
A
hydrogen
B
nitrogen
C
oxygen
D
carbon
*select an answer for all questions
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