lqc 3a exam qs

Question 1

explain why some bacteria can grow rapidly in skin wounds

Answer 1

• the temperature is warm, increasing the rate of reactions in bacteria
• availability of energy source from tissue/ blood
• availability of water for bacterial cell functions
• oxygen availability is good allowing aerobic respiration

Question 2

what is the correct order of the phases 1-4 on a bacteria culture growth graph

Answer 2

lag, log, stationary, death