Question

1. the graph below represents the results of an investigation of the growth of three identical bacterial cultures incubated at different temperatures. which inference can be made from the graph? (1) temperature is unrelated to the reproductive rate of bacteria. (2) bacteria cannot grow at a temperature of 5°c. (3) life activities in bacteria slow down at high temperatures. (4) refrigeration will most likely slow the growth of these bacteria.

Explanation:

Analyze each option using the graph. The graph shows bacterial growth at different temperatures. As temperature decreases (such as in refrigeration), growth rate seems to decrease. Option (1) is wrong as the graph shows a relation between temperature and growth. Option (2) is incorrect since bacteria do grow at 5°C. Option (3) is not supported as higher - temperature here shows more growth. Option (4) is correct as lower temperatures like in refrigeration likely slow growth.

Answer:

(4) Refrigeration will most likely slow the growth of these bacteria.