Which molecule would be an indicator of fungal contamination in a drug preparation?

Question

A.  Cellulose
B.  Collagen
C.  Chitin
D.  Deoxyribose
E.  Lignin

Clarify Question
What is the key concept addressed by the question?
What type of thinking is required?

Gather Content
What do you already know about fungi? What other information is related to the question?

Choose Answer
Given what you now know, what information is most likely to produce the correct answer?

Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

Answer 1

C.  Chitin

Clarify Question
What is the key concept addressed by the question?
        · This question is asking about how fungi can be differentiated from other living things.
What type of thinking is required?
        · Apply level:
            o You are being asked to take what you already know and use, or apply, it to the identification of fungi.

Gather Content
What do you already know about fungi? What other information is related to the question?
        · Fungi absorb nutrients from their surroundings.
        · Fungi possess cell walls that are composed of chitin.
        · Fungi can be unicellular or multicellular.

Choose Answer
Given what you now know, what information is most likely to produce the correct answer?
        · All living things possess deoxyribose, which is a component of DNA. This would not differentiate fungi.
        · Lignin and cellulose are characteristic of plants, not fungi.
        · Collagen is characteristic of animals.
        · Chitin is present in the cell walls of fungi, so this could be used to differentiate them from plants, and most animals.

Reflect on Process
Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
        · Apply level:
            o Answering this question correctly depended on your ability to use fungi in a new situation. If you got an incorrect answer, did you remember that fungi have cell walls that are composed of chitin, or that other microbes lack this polymer? Did you have trouble recognizing the characteristics of fungi to determine the correct answer?