JASMINE JABASINGH

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) 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...