Which of the following statements is true? Choose one: A. Bacterial species use a limited number of nutrient sources. B. All bacterial species require the same nutrients for growth. C. Most bacterial species can be cultured in the lab. D. All organisms require carbon as a macronutrient.

A. Bacterial species use a limited number of nutrient sources.

Explanation:

    There are two classes of nutrients that are indispensable to bacteria: macronutrients (carbon, oxygen, nitrogen, sulfur, phosphorus and hydrogen) and micronutrients (iron, zinc, manganese, calcium, potassium, sodium, copper, chlorine, cobalt, molybdenum, selenium, magnesium, among many others). But it takes more than the nutrients for them to feed, it takes the metabolism, because it is through it that they transform what they have into food.

    The absorption of nutrients to carry out the metabolism only occurs because there are growth factors (environmental) that influence the development of the bacteria. Some examples of these factors are: light, temperature, pH, oxygen and osmotic pressure. Each organism has an optimal growth temperature, or a favorable pH to successfully carry out its metabolism. This will vary from species to species.

answer; i believe that the correct answer is (light);

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