Which reaction convertswzs ywp.u8(e.u +aha 2 monosaccharides into disaccharides?

  1.State the reaction that forms disacc yog3t2g 1:blcharides 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 f;z6 z1v xjt5glor the enzyme lactase?

  Biomolecules have diverse.u;bj s,o o.gc forms and structures. Which of the following statements is false? ,go;c j.ubos.

  A disaccharide is formed by a condensation reaction between a glucose mpowj8d1 ;:h +:eapwc:g1sd5o; soc mdqiar ; ,olecule and a fructw da:m;psgophqi +a8 dj,oe1 s:;:wrd;oc5c1ose molecule. Which molecule fits this description?

  What bond is formed betweeox)(z 1jt:fwp)squ 8sg/3o h sn two glucose molecules to form maltose?

  What is the product e55)quvry4sh o, zc*m of this reaction?

  Which of the following ij vubvr. q7*ityx7y /(s a steroid?

  Which row in the table below correctly idet(ym (ng7ku/ rntifies the the constituents of the named macromolecum(/u t yk7n(grles?

  The diagram below shows the structure of 2 different+7ms 7j3 mvk6w4blumy 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 pol l2aprjj. (rr-ymer.

2.Compare and contrast carbohydrates, lipids and proteins.

  Which statement(s) about starch and glycl8s(kor 7r y+oogen 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 trigger a response in a cell byol +.6oia4wed binding to a receptor in the plasma memwieo+l6. a4 dobrane?

The micrograph shows a part of a plant cell from the leaf of Anemone s+aj)rk.z.zd)jlu 7mtp.


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 diagra (y-n 9w2iydyhm is correctly matched to the name?

  Eating a healthy, balanced diet is important in order (uk4gqo0 plj; 1vklf ve(/ 2cito maintain overall health and a strong immune system. A healthy diet means eating a wide variety of food whilst limiting the co( jc vgk lf(4/pvok;2uil1e0 qnsumption of foods which are considered to be less healthy, such as those high in saturated 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 a trig qx;-*g.krcc8:ok0 w d/ olnsslyceride?

Distinguish between the sa20 +kyz gcp( 2repczmlp q2*tzl*q50 tructure of cellulose, starch and glycogen.

  Which molecule is shown in the dierx)7yz ,d6hk agram below?

  Which monosaccharideznv:/f ue 6wd:o*vvt 6s are matched to incorrect disaccharides?

  Which of the following is the correct compositio/ n8j 9qsmrsm4n of the named polysaccharide?

  Which of the following state 7wb5xgti 9b0/bqa;ij h m,8am:i/aulments describes alpha-Linolenate, as depicted in the diagram b 0, iam//gxa5thbj bi7a;m:9b8uiqw lelow?

Molecules used in metabolism can be classified as carbohydrates, lipids, -loag(q;w2uix g, nk9and proteins. These molecules are often broken down into simpler units which are then involved in different m9w(-gkg, ioql; uxa 2netabolic 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 fatty acid withpa(pk po1e-r l8l.wix/7v,q w a 16 carbon chain. Draw the structure of a palmit/,wlp.eq xiwv- kl o78pra (1pic 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.