SL Topic B1.1 Carbohydrates and lipids

1#

第 1 题组 (共 4 题 4 分)

1. Carbon is the basis of biological j113crq1bpfvu9v nj8 polymers because:
I It can form chains by bonding to other carbon atoms.
II It is found in carbohydrates.
III It can form four covalent bonds.
IV It can form branched and ring structures.

A. I only

B. I and II only

C. I, III and IV only

D. I and III only

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2#

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2. Which of the following is the best description of the formation of a trix xgl8pnw,oa 5w0r,*0 zngg5pnip t8:glyceride fp 0xnp,n wot0zi 8xr ng*l5 gwg5p:,8arom glycerol
and 3 fatty acids?

A. Hydrolysis

B. Condensation.

C. Lysis.

D. Catabolism.

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3#

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3. Which type of structure are the ABO antigens that define human blood groups?1 l3q1cy( 7so wk*m)+g wkvgtt

A. Glycoprotein.

B. Phospholipid.

C. Fatty acid.

D. Glycophosphate.

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4#

单选题 ( 1.0 分) (组内4/4) 切至整卷模式搜藏此题

4. Which of the following terms would be appr a +mpsxpb-0igflpt - wiao43 v;;r.6iopriate in describing the molecule ip3+; aovg 6b sar;0pxt-mi4ipiw.lf-llustrated?
I. Hexose.
II. Polysaccharide.
III. Glucose.
IV. Pentose.

A. All of the above.

B. I and III only.

C. III and IV only.

D. I, II and III only.

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5#

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第 2 题组 (共 6 题 6 分) 当前第1/6题

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5. The chart and graph below show the results of an experiment where carbon dioxide evolution of a suspension of Brewer’s yeast (Saccharomyces cerevisiae) was measured. The yeast was grown several times, using different carbohydrate sources.
• 1g of the yeast was placed in a conical flask and
• 50cm3 of a 1% solution of the carbohydrate solution was added.
• The flask was fitted to a gas syringe to collect the carbon dioxide produced.

a. Suggest one variabvba 4) u:*bunm 18mpw+ng fm*rle that should be controlled other than those given in the questiobfrm1vgp8)*bnau:wu*4 n mm+ n.

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6#

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第 2 题组 (共 6 题 6 分) 当前第2/6题

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5. The chart and graph below show the results of an experiment where carbon dioxide evolution of a suspension of Brewer’s yeast (Saccharomyces cerevisiae) was measured. The yeast was grown several times, using different carbohydrate sources.
• 1g of the yeast was placed in a conical flask and
• 50cm3 of a 1% solution of the carbohydrate solution was added.
• The flask was fitted to a gas syringe to collect the carbon dioxide produced.

b. What types of carbohydrate were used as the nutrient sour)hf/um*4) aw moqackr ;aqn)+ ce?

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7#

问答题 ( 1.0 分) (组内3/6) 切至整卷模式搜藏此题

第 2 题组 (共 6 题 6 分) 当前第3/6题

题组内容描述:
5. The chart and graph below show the results of an experiment where carbon dioxide evolution of a suspension of Brewer’s yeast (Saccharomyces cerevisiae) was measured. The yeast was grown several times, using different carbohydrate sources.
• 1g of the yeast was placed in a conical flask and
• 50cm3 of a 1% solution of the carbohydrate solution was added.
• The flask was fitted to a gas syringe to collect the carbon dioxide produced.

c. Explain the shape of the curve for the use of glucose as a respiratorh 9ee-3- *ff)oudib qpy substrao9fh )*qp e eu-id3-bfte.

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8#

问答题 ( 1.0 分) (组内4/6) 切至整卷模式搜藏此题

第 2 题组 (共 6 题 6 分) 当前第4/6题

题组内容描述:
5. The chart and graph below show the results of an experiment where carbon dioxide evolution of a suspension of Brewer’s yeast (Saccharomyces cerevisiae) was measured. The yeast was grown several times, using different carbohydrate sources.
• 1g of the yeast was placed in a conical flask and
• 50cm3 of a 1% solution of the carbohydrate solution was added.
• The flask was fitted to a gas syringe to collect the carbon dioxide produced.

d. Describe the differences between the results for glucose and 24mid os cwk0;wjs-c6 starch.

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9#

问答题 ( 1.0 分) (组内5/6) 切至整卷模式搜藏此题

第 2 题组 (共 6 题 6 分) 当前第5/6题

题组内容描述:
5. The chart and graph below show the results of an experiment where carbon dioxide evolution of a suspension of Brewer’s yeast (Saccharomyces cerevisiae) was measured. The yeast was grown several times, using different carbohydrate sources.
• 1g of the yeast was placed in a conical flask and
• 50cm3 of a 1% solution of the carbohydrate solution was added.
• The flask was fitted to a gas syringe to collect the carbon dioxide produced.

e. After 60 minutes yeast produced 44 cm3 of CO2. What percentage of th0g g5p6tg-ln n8u1p dhis volume did the yeast produce after 60 minutes using sucrose? (Show your wpnglnp8tg16 u5- 0dghorking)

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10#

问答题 ( 1.0 分) (组内6/6) 切至整卷模式搜藏此题

第 2 题组 (共 6 题 6 分) 当前第6/6题

题组内容描述:
5. The chart and graph below show the results of an experiment where carbon dioxide evolution of a suspension of Brewer’s yeast (Saccharomyces cerevisiae) was measured. The yeast was grown several times, using different carbohydrate sources.
• 1g of the yeast was placed in a conical flask and
• 50cm3 of a 1% solution of the carbohydrate solution was added.
• The flask was fitted to a gas syringe to collect the carbon dioxide produced.

f. Which trial was a control experiment ag f*02. gh-*pcwwhhfond why was it necessary?

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11#

问答题 ( 1.0 分) (组内1/2) 切至整卷模式搜藏此题

第 3 题组 (共 2 题 2 分)

6. Compare and contrast the use of lipids and carbohydrates as energy stori6 ikasdtafm51i ;-iz*ng matema fi; ki6s15 i-dt*zarials in plants and animals.

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12#

问答题 ( 1.0 分) (组内2/2) 切至整卷模式搜藏此题

7. Outline the differences between the structu.(l48 z tcp)smmlcjq6re of saturated, monounsaturated andpolyunsaturated fatty ac.tczcjml8pq lm4s6 ()ids?

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