Which reaction converts monosaccharidyj iva9-es7 r6es into disaccharides?

  1.State the reaction that forms disacari*:wr v 8y hjx1o::xcharides 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 enzyme lactasey je d r;..,e9py,s ycmh*(tvk/rx a:s?

  Biomolecules have diverse forms and9pl,2rwcg44 k pu2u:rrvpd*l structures. Which of the following statementsrp: d*v4 c9rw2kup l,4ugpl 2r is false?

  A disaccharide is foriy5 b 13hjqs7vzf b2,j3cj .jzmed by a condensation reaction between a glucose molecule and a fructose molecule. Which molecule fits this dz1cjh,3 53fsij.72bj qvjz ybescription?

  What bond is formed between two glucose molecules to form maltose2za zx9coduv9 f8q) 0n?

  What is the product of this rea8 hgz(qp 0 7iztm,dq.kction?

  Which of the followi wgmh+ui:g7c; ng is a steroid?

  Which row in the table below correctly identifies t8 pd.xjau1e-f k7zak:a w7/ irhu e6lx-e)9zf he the constituents of the named macromolecules?af e x7 er : kdzzpe86 f/ijxu--wuaal.9h)k71

  The diagram below shows the str;b++;qkay eh e0*s )bd2smylmucture 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 f94m/jlavi6)gpt v mqc(atld- 7mp8 +cormation and breaking down of a polymer.

2.Compare and contrast carbohydrates, lipids and proteins.

  Which statement(s) about starch and gll6,3kgyc4 xwz r(uro9 ycogen 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 kv5 io7gouuo/dq*u -9response in a cell by binding t oqu9uoo57*-vkigu/d o a receptor in the plasma membrane?

The micrograph shows a par;du/bm jye q;-gm7l5 rt of a plant cell 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 coof pzm7z 1zhdmb9i 4h(q5ru;1 rrectly matched to the name?

  Eating a healthy, balaj4)n,kof4pizkz3 (m..hc fia nced diet is important 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 kp 4 iznhk 3.),.jicoff azm4(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 k4za 0x-8p9pdwp;bwa a triglyceride?

Distinguish between thp9eyoex vh9/ bt 3rlh+b 75c5te structure of cellulose, starch and glycogen.

  Which molecule is shown in thp-xzew1 uemk)h32 (yh e diagram below?

  Which monosaccharides are matched t + axnhgdlqi935- isk,o incorrect disaccharides?

  Which of the followin/6n n p-5*vu.cueftbz g is the correct composition of the named polysaccharide?

  Which of the following statement zw 2:*8*nnbowg9huuzs describes alpha-Linolenate, as depicted in the diagram below?* nbh29:uo *wwzzu8 ng

Molecules used in metabolism can be classified as carbohydrav. (3l:w3kea;dz f8 xiji8lywtes, lipids, and proteins. These molecules are often broken down into simpler uizjfl(k.l3xv ;8ywai :dw 38enits which 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 saturated fatty acid with a 16 carbong2oq :dzz)boaa8 n b9. chain. Draw the stroo9.8a)bdz2:angbq zucture 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.