JASMINE JABASINGH

1) The diagram represents a simple reflex arc. What is the sequence of nerve cells through which an impulse passes during a reflex action? 2) The diagram shows a neurone. 3) What will be the effect of strenuous exercise on the volume of water lost through the skin and the kidneys? 4) Which labelled part of the eye contains muscle? 5)  6)  7) The diagram shows the skin. Which labelled structure releases sweat? 8) What is a synapse? A a junction between two neurones B a relay neurone C an effector D an electrical signal 9) The diagram shows a simple reflex arc. Which labelled part is the sensory neurone? 10) Some structures in the eye are listed. 1 cornea 2 iris 3 lens 4 retina Which structures contain light receptors? A 1, 2 and 3                          B 2, 3 and 4                          C 2 and 4 only    ...

1) Where is urea made? A bladder B kidney C liver D urethra 2) Which function does not occur in the kidneys? A breakdown of alcohol B removal of excess salts from the blood C removal of excess water from the blood D removal of urea from the blood 3) What is urea formed from? A amino acids B fatty acids C glucose D glycerol 4) What is the function of the kidney? A making glucose and reabsorbing urea B making urea and removing salts C removing glucose and reabsorbing salts D removing urea and reabsorbing glucose 4) How does the skin react when the body becomes very warm? 5) Fig. 3.1 shows the excretory system in a human male. Fig. 3.1 (a) Table 3.1 shows five functions of parts of the excretory system. Complete the table by: • naming the part that carries out each of the functions • using the letters from Fig. 3.1 to identify the structures named. Table 3.1 [5] (b) Urine contains urea. (i) State where urea is produced in the body. ............................................................

1 (a) Study Fig. 6 (Insert), which shows information about electricity generation in France. (i) How much electricity was generated in total in France in 2012? ......................................... TWh [1] (ii) Using Fig. 6 only, identify: – a fossil fuel used to generate electricity in France; .................................. – a renewable form of energy used in France. ................................... [2] (iii) Using Fig. 6 only, describe three changes in the importance of different methods of generating electricity in France between 1972 and 2012. 1 ....................................................................................................................................... 2 ....................................................................................................................................... 3 .......................................................................................................................................[3] (iv) Explain how ...

1) The diagram illustrates some of the processes carried out by living organisms. Which characteristic of living organisms is represented by arrow X? A excretion B nutrition C respiration D sensitivity 2) What is a correct way of naming a species, according to the binomial system? A Homo sapiens B Homo Sapiens C human being D sapiens 3) The diagram shows four arthropods. How many of these arthropods are insects? A 1                                    B 2                                    C 3                                    D 4 4) The key can be used to distinguish between four different chemical substances. Use the key to identify which substance could be a p...