Which reaction converts monosaccharides into disacchwq3nil 1*/ gwbcx -l(parides?

  1.State the reaction that forms disaccharides from monosac8f n tkme4b8l*hmv8w 9charides.
   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 lactaseuz(;s2ahbv 9 //jkn lh?

  Biomolecules have diverse forms and structures. Which of tb :f7 w f gq9r8p,-l3qesm2roehe following statements is fals m:2,ep-sowf 7qrrf38qe lgb9e?

  A disaccharide is formed by a condensation reaction between a glucose moleculem5k0+ezh )d ld and a f5dl ez m0hk)+dructose molecule. Which molecule fits this description?

  What bond is formed between two glu )af;glgsf6:-8kb jk/c g;q bzcose molecules to form maltose?

  What is the product of this r4q 0 zb:zvr(slvot ro 2+1b:jkeaction?

  Which of the following is a steroi;tw2 /cg +fmard?

  Which row in the table below correctly identifies the the*n*( 1zk wtbhg constituents of the named ma n1kw**(gh bztcromolecules?

  The diagram below shows the st*qi01 f/ad ss o5)jsmdructure 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 polymer.-2.u 2fmzz(sw bo(tz 8r(o tqc

2.Compare and contrast carbohydrates, lipids and proteins.

  Which statement(s) about starch and glycogen is/are cor8ui.xq5z8ufqaf+ m-l rect?
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 )t 1np:v p8dtlz.4kjbcte*k( is only able to trigger a response in a cell by binding to a receptor in the c4d:k ) bp1t(k zl8*tv.e tpnjplasma membrane?

The micrograph shows a part of a plantlzro-2ldex gd/sa522 0f1, t 6lapzmb 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 correctly matched to the name? wm.e s0 r5k-ya

  Eating a healthy, balanced diet is important in order to maintain overall hy7ig; m dbvy/.ealth and a strong imm7db. yyg/i m;vune 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 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 wc+b fc:lkz4 9triglyceride?

Distinguish between the structure of cellulos6k1po l3ikx*b7k ypxts(;uh)e, starch and glycogen.

  Which molecule is show.zw.6n)ziqkn1ewt x)doj0 p1n in the diagram below?

  Which monosaccharides are madvc 7h1j jst3*tched to incorrect disaccharides?

  Which of the following is the correct composition of the named polyx 3: dvxemfpuc971+qi saccharide?

  Which of the following statement4b.imy;c( z*lfg+gnws describes alpha-Linolenate, as depicted in the ;cn* w4lgi(+.bzgmfy diagram below?

Molecules used in metabolism can be classified as carbohydrates, lipidj pnfcp:dore-7d r ).eu*ci 45s, and proteins. These molecules are often broken down into simpler un )n :*j5p4p-. ddocr cire7efuits 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(x*y hq1d ki8 xnos)f9m uak3( example of a saturated fatty acid with a 16 carbon chain. Draw the structure of a pasoydi*x 9na8uxf(kk1 m ) q(h3lmitic 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.