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  TEST INSTRUCTIONS 1)       The answers you provide must be your own, original work. No copying from any source is allowed. No marks will be awarded for work that is copied. 2)       Read all the questions carefully. 3)       Answer ALL the questions IN the quiz – do not leave any blank and do not write your answers on paper. 4)       Use the mark allocation as a guide to how much information is required in your answers. 5)       A file upload may be required. You will need paper, a pencil, a ruler and a scanner, scanning App or phone camera. 6)       Only hand draw diagrams, flow charts or tables on a separate piece of paper when asked to do so. 7)       All drawings should be done in pencil and labelled in blue or black ink. 8)       The diagrams in this question paper are not necessarily drawn to scale. 9)       You may use a calculator if necessary.

This is an extra “upload question” textbox. Only use this if a previous textbox was missing or faulty. If you do submit an answer here, please number it clearly and according to the relevant question number.

2.2 The blue button below is linked to the case study. Read the case study below and answer the questions that follow: TO VIEW THE DIAGRAM, RIGHT CLICK ON THE BUTTON BELOW AND OPEN IT IN A NEW TAB.    

2.2.1 Explain why a coelacanth is sometimes referred to as a “living fossil”. (2)       2.2.2 How old is the coelacanth species thought to be? (1)       2.2.3 In what year was the first coelacanth “re-discovered”? (1)       2.2.4 Why are marine biologists so concerned that the new oil drilling platforms will cause the extinction of the coelacanths?  Provide three original well thought out reasons. (3)       2.2.5 Provide three original well thought out reasons as to why the oil drilling should go ahead. (3)      

3.1.1 Provide a suitable heading for this graph. (2)       3.1.2 Identify the independent variable in this experiment. (1)     3.1.3 Why were kittens of the same litter used in the experiment? (1)       3.1.4 For the kittens in group A – what were the THREE most important sources of energy in their diet? (3)       3.1.5 a)  After how many days did the average mass of Group B start to decrease drastically? (1)         b)  Suggest a reason for this. (2)     c)  What conclusion can you draw from this? (1)       3.1.6 On which days were the masses of groups A and B equal? (2)       3.1.7 What was the average mass of the kittens in group B on day 23? (2)      

3.3 An experiment was carried out by Teneo students to determine the action of the enzyme Pepsin on uncooked egg white.  The students expected to see certain colour changes occurring in the test tubes.   Three test tubes, labelled A, B and C were placed in a water bath of 37C.   Test tube A contained:  3 ml egg white + 1ml pepsin solution + 1ml Biuret reagent   Test tube B contained:  3 ml egg white + 1ml pepsin solution (boiled) + 1ml Biuret reagent   Test tube C contained: 3ml egg white + 1ml pepsin solution    

1.3 Indicate whether each of the statements in COLUMN I applies to A ONLY, B ONLY, BOTH A and B or NONE of the items in COLUMN II. Choose A, B, A and B or NONE from the dropdown list.   2X5 (10)

3.1 In an experiment, kittens of the same litter and with the same average mass were divided into two groups:  A and B. The table below shows the diet these two groups were fed over a period of 50 days.   Group Day 0 to day 20 Day 21 to day 50 A Proteins, glucose, starch, fats, minerals  and water Same as for day 0-20 PLUS 100ml milk every day B Proteins, glucose, starch, fats, minerals and water, PLUS 100ml milk per day Proteins, glucose, starch, fats, minerals and water     The results of this experiment can be seen in the graph attached to the blue button below: TO VIEW THE DIAGRAM, RIGHT CLICK ON THE BUTTON BELOW AND OPEN IT IN A NEW TAB.            

1.5.1 Picture A is showing the skull of “Mrs Ples”.  Give the genus and species of “Mrs Ples”. (2)   [1]   1.5.2 Identify the specific place where “Mrs Ples” was discovered. (1)   [2]   1.5.3 Give the name of the tree sap that fossil B has been found in. (1)   [3]   1.5.4 Identify the type of fossil that is shown in picture C. (2)   [4]   1.5.5 Identify by name, the organism shown in picture D. (2)   [5]  

  COLUMN I COLUMN II 1.3.1 Vitamin B A.    Can be found in brown rice and wholegrain bread B.     A deficiency can result in Scurvy   [1] 1.3.2. Iron A.    Is a component of haemoglobin in the blood B.     A deficiency can cause anaemia   [2] 1.3.3. Lipids A.    Consist of C, H, O and N B.     The food test uses a chemical called Iodine solution   [3] 1.3.4. Polysaccharides A.    Glycogen is an example of a polysaccharide B.     The monomers are called glycerol.   [4] 1.3.5. Glycosidic bond A.     Found between amino acids B.     Found between saccharides   [5]