SL Topic B1.1 Carbohydrates and lipids - 无忧得胜-网上国际课程 (5edu.win)

1#

第 1 题组 (共 4 题 4 分)

1. Carbon is the basis of biological polymers b df hsm8, wkckzx,; ouv+e+c.-ecause:
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#

单选题 ( 1.0 分) (组内2/4) 切至整卷模式搜藏此题

2. Which of the foll7 rpk9 dgg- zg*t.vs+gowing is the best description of the formation of a triglyce-. kdg *7 r9+ggvgtszpride from glycerol
and 3 fatty acids?

A. Hydrolysis

B. Condensation.

C. Lysis.

D. Catabolism.

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3#

单选题 ( 1.0 分) (组内3/4) 切至整卷模式搜藏此题

3. Which type of structure are5uee0dmw5zt )36r5 hf(,ztaju7 xbfh the ABO antigens that define human blood groups?

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 a xxn4l kbxx9:8o6p nb1ppropriate in describing the molecule xxp k 4x:bb6nl81 onx9illustrated?
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 variable that should be controlled other6/pds/kwe 1 rw. i39:jted ewj than those given in the quest9 wdp/es :ie3jwk6 /d r1e.wjtion.

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6#

问答题 ( 1.0 分) (组内2/6) 切至整卷模式搜藏此题

第 2 题组 (共 6 题 6 分) 当前第2/6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.

b. What types of carbohydrate were used as the nutrient sdr(synqg dal-1c i-(g ;:t8s cource?

该题自我估分: (必填) (满分:1.0分)

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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 th*j 6 )vkssc-yg6gf-q re use of glucose as a respiratory substra)q-cv skfyg g*6- rs6jte.

该题自我估分: (必填) (满分:1.0分)

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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 difference,l . .y zetkbldne.a+8s between the results for glucose and starch.

该题自我估分: (必填) (满分:1.0分)

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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 ofo)yq. qeds0uhx uc4,( CO2. What percentage of this volume did the yeast produce after 60 minutes using sucrose? (Sho.uuc0d hx )qyo se(,q4w your working)

该题自我估分: (必填) (满分:1.0分)

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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 experimentzcrc,x7 gqnqbd()- .ddl6c,rj: p4k k and why was it necessary?

该题自我估分: (必填) (满分:1.0分)

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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 sto.roo eiha7 g-0b8+4dpusrc 3oring materials in plants and animalscoua.d b487p0+g3- hsioro re .

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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 differen6;pq)tz qa vh;ces between the structure of saturated, monounsaturated andpqzq6;pv ;h )atolyunsaturated fatty acids?

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