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2. Which of these could be caused by a single-celled organism?

A. John left a bicycle out in the rain, and it began to rust,
B Joe mixed baking soda and vinegar, and it started to bubble,
O C Mikayla left the milk out overnight, and it smelled sour the next day.
D Jenny put sugar into some iced tea and stirred it until she could not see the sugar
anymore

Respuesta :

Answer:

The correct answer is C!

Explanation:

Single-celled organism are usually bacteria like Fungai. When Mikayla left the milk out a single-celled organism formed turning it bad!

Mikayla left the milk out overnight, and it smelled sour the next day so, souring of milk can be caused by single-celled  organism.

What is single-celled organism?

A single-celled organism, also known as a unicellular organism, is an organism made up of only one cell, such as bacteria, protists, and yeast.

What is souring of milk?

  • When the bacterium is given an ambient temperature (by maintaining the milk at room temperature), the bacteria feeds on the sugar in the milk. As a result, milk turns sour.
  • This process of milk sourness is a fermentation   process that transforms lactose in milk to lactic acid, making milk acidic (lower pH value).
  • Souring of milk is most commonly caused by the inoculation of Lactic acid bacteria, a single-celled organism.

Hence, the correct option is C.

To know more about single celled organism here

https://brainly.com/question/862755

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