113. Which one of the following is hydrophobic?
1. Glucose
2. carbon dioxide
3. a long chain fatty acid
4. the amino acid glycine
[formula HO2C.CH2.NH2]
5. NaCl
114. Which one of the following is a hydrophobic compound?
1. Oxygen
2. Fructose
3. Ethanol
4. sodium phosphate
5. benzene
115. Ribose is:
1. A five-carbon sugar
2. A six-carbon sugar
3. A disaccharide
4. An oligosaccharide
5. A nucleic acid
116. Which one of the following is NOT a carbohydrate?:
1. Glucose
2. Lactose
3. Lactate
4. Starch
5. Glycogen
117. Deoxyribose is:
1. A five-carbon sugar
2. A six-carbon sugar
3. A disaccharide
4. An oligosaccharide
5. A nucleic acid
118. Fructose is:
1. a five-carbon
monosaccharide
2. a six-carbon
monosaccharide
3. a disaccharide
4. an oligosaccharide
5. a polysaccharide
119. With regard to the formula of sugars, which one of the following is FALSE?:
1. glucose is C6H12O6
2. fructose is C6H12O6
3. sucrose is C12H24O12
4. ribose is C5H10O5
5. 2-deoxyribose is C5H10O4
120. Which one of the following is NOT a lipid?:
1. Stearic acid
2. Glycerol
3. Tristearate (the ester
of glycerol and three stearic acid molecules)
4. Cholesterol
5. The ester of cholesterol
and stearic acid
121. The compound with the formula HO2C.CH2.NH2 is
1. An a
-amino acid
2. Optically-active
3. A nucleic acid
4. A protein
5. A carbohydrate
122. The compound with the formula CH3.(CH2)16.CO2H is:
1. a nucleic acid
2. an amino acid
3. a triacylglycerol
4. a hydrocarbon
5. a fatty acid
123. The compound with the formula CH3.(CH2)16.CH2OH is:
1. a fatty acid
2. a fatty alcohol
3. a triacylglycerol
4. a hydrocarbon
5. an amino acid
124. A catalyst increases:
1. The activation
energy
of its reaction
2. The equilibrium
constant of its reaction
3. The rate at which
equilibrium is attained
4. The concentration
of products at equilibrium
5. The temperature
optimium of a reaction
125. Which one of the following compounds has an asymmetric carbon
atom
and is therefore optically-active?:
H
|
1. CH3-C=O
C2H5
|
2. CH3-C=O
CH3
|
3. CH3-C-OH
|
H
C2H5
|
4. CH3-C-OH
|
H
H
|
5. CH2-C-OH
|
H
126. Which one of the following compounds has an asymmetric carbon atom and is therefore optically-active?:
H
|
1. H
-
C
-
NH2
|
H
CH3
|
2. H
-
C
-
NH2
|
H
CH3
|
3. CH3
-
C
-
NH2
|
H
C2H5
|
4. CH3
-
C
-
NH2
|
H
5. CH2 =
C
-
NH2
|
H
127. Which one of the following is a first-order reaction?
1. A ->
P + Q
2. A + B ->
P
3. A + B ->
P + Q
4. A + B <->
P + Q
5. A + B ->
P + Q + R
128. Which one of the following is a third-order reaction?
1. A ->
P + Q
2. A <->
P + Q
3. A + B ->
P
4. A + B <->
P + Q
5. A + B + C ->
P + Q
129. The enzyme that catalyses the reaction between CH3.CO.COOH + NADH + H+ and CH3.CHOH.COOH + NAD+ is:
1. glycerol hydrogenase
2. pyruvate decarboxylase
3. lactase
4. lactate synthetase
5. lactate dehydrogenase
130. The enzyme that catalyses the reaction between CH3.CH2OH + NAD+ and CH3.CHO + NADH + H+ is:
1. ethanol hydrogenase
2. ethanol hydrase
3. ethanol dehydrogenase
4. ethanal dehydrogenase
5. ethanal oxidase
131. Which one of the following statements about carbon dioxide gas is FALSE?:
1. There are 6 ×
1023 molecules of it in a mole
2. One molecule of it
occupies
a volume of 22.4 litres under standard conditions
3. Six molecules of it are
generated when one molecule of glucose is completely oxidised
4. It has a relative
molecular
mass of 44
5. It dissolves in water
to form an acidic solution
132. Which one of the following statements about oxygen gas is FALSE?:
1. One mole of it contains
12 × 1023 atoms of oxygen
2. One mole of it occupies
a volume of 22.4 litres under standard conditions
3. Its molecular formula
is O – O
4. Its partial pressure
decreases
as altitude increases
5. The concentration of it
dissolved in water is proportional to its partial pressure
133. Which one of the following statements about carbon dioxide gas is false?:
1. One mole of it
contains
6 × 1023 atoms of carbon
2. One mole of it
occupies
a volume of 22.4 litres under standard conditions
3. Six moles of it
are generated when one mole of glucose is completely oxidised
4. It has a relative
molecular mass of 44
5. It dissolves in
water to form an alkaline solution
134. Which one of the following statements about nitrogen gas is FALSE?:
1. One mole of it contains
6 × 1023 atoms of nitrogen
2. One mole of it occupies
a volume of 22.4 litres under standard conditions
3. It is the most abundant
gas in the Earth's atmosphere
4. It has a relative
molecular
mass of between 20 and 40
5. At low temperatures it
forms a liquid
135. The reaction CO2H.CH = CH.CO2H -> CO2H.CH2.CH2.CO2H is an example of:
1. Oxidation
2. Reduction
3. Hydrolysis
4. Hydration
5. Carboxylation
136. The conversion of CO2H.CH2.CH2.CO2H -> CO2H.CH = CH.CO2H is an example of:
1. Oxidation
2. Reduction
3. Hydrolysis
4. Hydration
5. Decarboxylation
137. The conversion of COOH.CH = CH.COOH -> COOH.CH2.CHOH.COOH is an example of:
1. oxidation
2. reduction
3. hydrolysis
4. hydration
5. decarboxylation
138. Glucose, in the reaction C6H12O6 + 6O2 -> 6CO2 + 6H2O:
1. is hydrolysed
2. gains electrons
3. is acidified
4. is reduced
5. is oxidised
139. In the reaction of glucose in which C6H12O6 -> 2 CH3.CHOH.CO2H the sugar is:
1. hydrolysed
2. oxidised
3. reduced
4. decarboxylated
5. converted to an acid
140. The reaction in which sucrose is converted to glucose and fructose is an example of:
1. esterification
2. reduction
3. hydrolysis
4. hydration
5. decarboxylation
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