Which reaction converts mon su7;qik4heq/ osaccharides into disaccharides?

  1.State the reaction that for9c +663zn5h fzwoi 6t kuu/tyams 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 enzyme lacz ajup py85-,ktase?

  Biomolecules have dive-6 1gn+-een-9 vhvcwrj(od sw8fr/nbrse forms and structures. Which of the following statements is fav/ojnev-6 n8wf(9 wn se1 d-br +-cgrhlse?

  A disaccharide is formed by a condensation re9-,xx9 ;lnf ngnd+h vcaction between a glucose molecule and a fructose molecule. Which molecule fits this descriptiondn xch+, nl -9gn9vxf;?

  What bond is formed between two glucose molecules to formrj m.ozaj+qs/gs-m 93 maltose?

  What is the product of d5y bqw a13 5fs0ljao+this reaction?

  Which of the following is 6gmyw0o/g9tle0gj ph* luf+7a steroid?

  Which row in the table below correctly identifies the th-:mtak2yd tc0v :pu.ae constituents of the named :c a-d p 2ym:0uatv.tkmacromolecules?

  The diagram below shows the structure of 2r+v2ecq9-y-f 0v*nd ud0laxli:bm: j 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 the2zl q5be9 b/ze formation and breaking down of a polymer.

2.Compare and contrast carbohydrates, lipids and proteins.

  Which statement(s) about6q n.6g ldg.kz 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 trigger a response in a+ z -tb6xjqc2fmd u2j6 cell by binding to a receptor in x2+ j6t q6jucdbf 2-mzthe plasma membrane?

The micrograph shows a part of a plant cell from the le/ph byw 6/rv6rqt1xe7 af 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 matcse/kz (craw brfpu-5r-; d1 j7hed to the name?

  Eating a healthy, balanced diet is importac 1 3lkg(6rg*rnfsp(hszg 9o9nt in order to maintain overall health and a strong immune system. A healthy diet means eating a wide variety of food whilst limiting the consum ( cpfg(k36szg*rn9 o hs9lg1rption 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 trigl 1uz, qj pon5sjvd-6z1yceride?

Distinguish between the structure of cellulose, s*c nl8kh3poilg12 we +tarch and glycogen.

  Which molecule is shown in the diagram bx7u (. lrzc(gbrek3n* elow?

  Which monosaccharides are matched to incor/fo-s7x- akb srk9hz 9rect disaccharides?

  Which of the following is the correct composition op3-( x9dhd dunzj4z *ff the named polysaccharide?

  Which of the following sta.nsgq:j k9)x; vj vd djpdf6kzm(4g66tements describes alpha-Linolenate, as depicted in the diagram be9j :6pd6ndf6q dz4(x.g) ;kjjmkvgsvlow?

Molecules used in metabolism can be classified as carbohydrates, lipids, and (c0qsjg2je0s- uta r;eeud-8 proteins. These molecules are often broken down into simpler units which are then involved in different metabolic reac eau j;-8 qt -gserse0dc2(ju0tions.

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 fatpjc)/hiw9bq w n3s(k: ),nxvq/iwj7y ty acid with a 16 carbon chain. Draw the structure of an jn)w:iy/xw 3 sc,p/qwq k(hbi)j79 v 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.