All of the following would be considered symptoms (rather than signs) except:
a. cough
b. sensitivity to light
c. hot flashes
d. acidosis

C. Acidosis

Explanation:

A symptom is a version of the manifestation of a sickness given by the patient. It can vary from patient to patient and is subjective. The signs come from the examination of the patient and are objective and measurable throughout a system of units ( C, mm Hg, other). Acidosis is a sign because it requires laboratory tests.

unicellular organisms, like bacteria, are able to perform all life functions within one single cell. multicellular organisms need many different types of cells to carry out the same life processes. each of these special types of cells has a different structure that it perform a specific function.