Which reaction converts monosaccharides int ,y 7 nlljsczk.pkxcytke3+ 2:4twz/6 o disaccharides?

  1.State the reaction that form2yx8q m/z0wpcs disaccharides from monosaccharides.
   OR dehydration synthesis

2.Draw the products of the reaction between the two monosaccharides shown in the diagram below.

  What is the substrate for the enz- vsr p 2n7)8ozqboue,yme lactase?

  Biomolecules have diverse forms and structures. Whcic 1l .04sp *irrt2xfsm8 e9dich of the following statements is ff rs 9smtdp8l4*0r.cix2 1 iecalse?

  A disaccharide is formed by a condensation reaction between a glucose molez40ler 2svgba4 lt+vaa3u f6: cule and a frb z403v alavs e4f2augl+:r6tuctose molecule. Which molecule fits this description?

  What bond is formed between two gla 1up lol3qo8-iq5eu,ucose molecules to form maltose?

  What is the product o/gig- :osh)*b c mh+m,g(pkl(0iblqaf this reaction?

  Which of the following is a c3yiwr r637gz steroid?

  Which row in the table below correctly identifies the tf2 j g*2u6f44wgz hzah5b zhl5he constituents of the named macaghz5gf 2b465uwlj42 *h zh zfromolecules?

  The diagram below shows th-o/ hgd r9hfd+e structure of 2 different monomers.



1.State the name of the following:

1.1.structure A:α-  
1.2.structure B:  

2.State the name of a polymer which contains the following molecules:

2.1.structure A:starch OR glycogen OR amylose OR amylopectin
2.2.structure B:ribonucleic acid OR   

1.Distinguish between the formation and breaking down of a polymetb . kh-,8n c* buw;65wjcdjxkr.

2.Compare and contrast carbohydrates, lipids and proteins.

  Which statement(s) a4vxsot .6 mcpdt7.x d+bout starch and glycogen is/are correct?
I. Starch and glycogen are branched molecules.
II. Starch is made up β− glucose molecules but glycogen is made up of α− glucose molecules.
III. Starch and glycogen are energy storing polysaccharides.

  Which of the following is only able to trilf40+1kvzu r t-d 1;lx65tx u ybtcj5vgger a response in a cell by binding to a receptor i0 ;rcvtx dlljyt 5u-bft41xku +v65z1n the plasma membrane?

The micrograph shows a part of a plant cell from the leaf ofcv siz)/,gp)f Anemone sp.


1.Label structures in the plant cell above:

1.1.using the letter R where starch can be found;
1.2.using the letter S where lipids can be found;
1.3.using the letter T where cellulose can be found.

2.Compare and contrast between the structure and functions of glycogen and starch.

  Which molecule diagram is correctly matched to t-9cki uh:xx c:he name?

  Eating a healthy, balanced diet is important in order to m ,i)d;ysoi/j kaintain overall health and a strong immune system. A healthy diet means eating a wide variety of food whilst limiting the consumption of foods which are considered to be less healthy, such as those high in saturatedokiydj )/;s ,i fats.

In an investigation into the effects of diet on low-density lipoprotein levels (LDL) in the blood, scientists provided two groups of mice with varied diets. Each group was given 5g of food per day, containing a mixture of a standard food mix and either avocado or cheese. The ratios of the food were changed each day and blood LDL levels were recorded. The diets and results are shown in the tables and graph.



1.1.Describe the impact on blood LDL levels when feeding mice diets supplemented with avocado or cheese.

1.2.Explain the differences between results from both groups.

1.3.Suggest a reason for the trend shown in LDL levels in group one.

2.State which group is most at risk of heart disease and stroke. Give a reason for your answer.

3.1.Suggest one advantage of using mice in this experiment instead of humans.

3.2.State one variable, not mentioned in the question, which would need to be controlled in this experiment in order to achieve valid results.

4.For mice fed with cheese, calculate how many times greater the LDL levels were on day 5 compared to day 2.
Day 2 =  

  Which molecules form a0ygv 7si 7m-vx triglyceride?

Distinguish between the structu: uxktm +bsyks( r-9rg0 +u+gvre of cellulose, starch and glycogen.

  Which molecule is showlv;rk9 bo4p.z n in the diagram below?

  Which monosaccharides are matched to xf(3 .y/-1isxuvaq.;qgoxfa iwml73incorrect disaccharides?

  Which of the following is the correct composition of the named polysaccha; ;3iczz6eeza 7vk p*cride?

  Which of the following statements describqp8cc*w4 muz 7es alpha-Linolenate, as depicted in the diagram cqzwp4c*u78mbelow?

Molecules used in metabolism can be classifiexmdx-95jp- u jl f3./nbn+nb 5in.m sed as carbohydrates, lipids, and proteins. These molecules are often broken down into simpler units which are then involved in differ+ 5ie9bnl5x j.bn/ dpn- x mun.3-fsjment metabolic reactions.

1.Identify two disaccharides and the monomers from which they are formed.

2.Draw a labeled molecular diagram to show a generalized amino acid.

3.Discuss the theory of vitalism and its falsification.

1.Palmitic acid is an example of a saturated d giqvsvyl;zf,;(e./ fatty acid with a 16 carbon chain. Draw f/gy.lvvi, ;esqz;( d the structure of a palmitic acid.

2.Testosterone is a steroid hormone, which is carried in the blood. Explain how, when testosterone reaches its target cells, it brings about its effect on the DNA of that cell.

3.Explain how the structure of cellulose and glycogen are related to their functions.