Which reaction converts monosaccharides into disaci9ulw,/isuz .a5 gn x*charides?

  1.State the reaction that forms disaccharides from monosac1/w8g x +iubvfcharides.
   OR dehydration synthesis

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

  What is the substratocxvpb o:2f5-o+u /z ae for the enzyme lactase?

  Biomolecules have diverse forms and structures. Which of the following statebpp0 0f: ut3cqments i3c0upp b0t:fqs false?

  A disaccharide is formed by ay u:x8v 5lw8k 2dans7e condensation reaction between a glucose molecule and a fructx k5 e8wd7ynu2 8lasv:ose molecule. Which molecule fits this description?

  What bond is formed between tws0 dnny-ym /-yo glucose molecules to form maltose?

  What is the product of th6eo rhvk8 (1pqis reaction?

  Which of the following mxqz nn +3lvpn0o863m is a steroid?

  Which row in the table below correctly identifies the the constituentsh:y4uhb onr9w,98 o uexu 8mfh5uo5: s of the named ma9ohefoh4,uuo8 sru :n 85 w5:xm9hubycromolecules?

  The diagram below shows the structu,: sk(v t*s4iel mue7pre 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 oc o4w,1*hpl cjdtq ,yh2zh9e+f a polymer.

2.Compare and contrast carbohydrates, lipids and proteins.

  Which statement(s) about starch a 9fqg ;isfj/b1nd 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 trigger a response in a cell by binding tis(gtz l3(q z-o a receptor in the plasma membrz qis(g- ltz3(ane?

The micrograph shows a part of a plant cell l cpdvmi4x27vi:v/)o from the leaf of 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 thqg:d m 5u(b /u2nhy(ykof5e4v e name?

  Eating a healthy, balanced diet is importa(5re lzzxb bhe(b8:8u;if5chnt in order to maintain 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 tr8 b8z5f 5uc b(hbhi;: xeze(lhose 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 :wscows+63h:kh gw l /triglyceride?

Distinguish between the structure of cellulose, v)qj2-ptl rs/starch and glycogen.

  Which molecule is shown in the diagram beloy/4 vu,4po 5qdfcv2rv5tga g 9w?

  Which monosaccharides are matched 2uen 7gyi(h7bto incorrect disaccharides?

  Which of the following is the correct composition of theg/) rc )la nx22t7wohmir-4wc named polysaccharide?

  Which of the following statemenhuy,yqsz;zx143w ey (ts describes alpha-Linolenate, as depicted in the diagram b;1yzq(3y4xsw e,z uyhelow?

Molecules used in metabolism can be classified as carbohydrates, lipids, andxhqrgs4j 6) .qa*pqz + proteins. These molecules are often broken down into simpler units whzg6 qsxjq)ah*q p+4r.ich are then involved in different 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 saturaf :lc h3v0 d1hmwxo6/sted fatty acid with a 16 carbon chain. Draf 0c1x6h: s hl/dom3vww 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.