(C) State TWO ways in which fermentation process helps to improve [2 marks] quality of food products.

(A) State ONE example of selective media that can be used to isolate [3 marks] EACH of the following microorganisms. (i) Gram positive bacteria. (ii) Staphylococci spp. (iii) Gram negative bacteria.

Em 1950, a população de girafas numa região do Quénia era de 4600 indivíduos. Sabe-se que a taxa de decrescimento da população é \( 3,5 \% \) por década. Admitindo que a taxa de decrescimento se mantém constante a longo prazo, responda às questões que se seguem.

8 Which of the following is a type of universal media? (A) MacConkey Agar. (B) Baird-Parker Agar. (C) \( \quad \) Mannitol Salt Agar. (D) Trypticase Soy Agar. 9

(B) (i) Explain THREE precaution steps during decontamination of biohazard wastes in bag using an autoclave. (ii) Describe TWO materials that will remain undamaged after autoclaving.

(C) State TWO ways in which fermentation process helps to improve [2 marks] quality of food products.