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习题练习：SL Topic B1.1 Carbohydrates and lipids
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 作者: admin    总分: 12分  得分: _____________

答题人: 游客未登录  开始时间: 25年01月26日 09:52  切换到: 整卷模式

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1#
 
单选题 ( 1.0 分) (组内1/4) 切至整卷模式 搜藏此题  
第 1 题组 (共 4 题 4 分)
  1. Carbon is the basis of biological polymers because: 5x5nucc s 7c)b
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.

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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 following is the best description of th 1nvj(4 ugcnwuq(ey:6e formation of a triglyceride from glycerovyeg :u14nn(u6qwjc( l
and 3 fatty acids?

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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 str.pp;hnjl+ct8: z + ylnucture are the ABO antigens that define human blood groups?

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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 b;wn:nhb :b3nl4f./iyvw0o lvk*gwy8e appropriate in describing the molecule illunnf0 l :bolwngi :k.4wb/hvw*yv 8y;3strated?
I. Hexose.
II. Polysaccharide.
III. Glucose.
IV. Pentose.


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5#
 
问答题 ( 1.0 分) (组内1/6) 切至整卷模式 搜藏此题  
第 2 题组 (共 6 题 6 分) 当前第1/6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.

a. Suggest one variable that should be controlled b/s5mj z.2vfu3l a,t jother than those given in the questi3/u bltmzs j2fa. jv,5on.
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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 zjs8x( 9ehbnu/xsx,gd xw r.oj*wgc 8w+ 9s. :nutrient source?
参考答案:    

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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 use5;m8hx*me 2yy,7lxfnyz5a nq of glucose as a respiratory substra 8,*hmnyl2f5 yqe ynzax ;m5x7te.
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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 resu9wd:nqv )ps9r lts for glucose and starch.
参考答案:    
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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 c 0nf5 e4vm;m+ klibw5yeast produced 44 cm3 of CO2. What percentage of this volume did the yeast prw; 5i0vkm mlcb n+f45eoduce after 60 minutes using sucrose? (Show your working)
参考答案:    

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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 and weo+s xm tfb* 2x/*oi4jhy was it necessary?
参考答案:    

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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 contrastj;1,otmut xa4;kq- yl the use of lipids and carbohydrates as energy storing materials in plants and an ;jqt1xouk m-;ay,tl4imals.
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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 structure of saturated, monounspy 6en,fu1o+ac9d2p ohi(zx:7w7 zswaturated andpolyunscio9ux7oy2 wz:f h(6z,wp+ 7a1 nep dsaturated fatty acids?
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  • 姓名:游客(未登录)
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