Foundations in Microbiology 9th Edition by Kathleen Park Talaro, Barry Chess

تمرين 1

Select the correct answer from the answers provided. For questions with blanks, choose the combination of answers that most accurately completes the statement. An organic nutrient essential to an organism's metabolism that cannot be synthesized itself is termed a\an
A) trace element
B) micronutrient
C) growth factor
D) mineral