Which of the following features are characteristic of fungi?
A) Cell walls, photosynthesis, and usually filamentous bodies
B) No cell walls, parasitic, heterotrophic
C) Cell walls, chemosynthetic, heterotrophic
D) No cell walls, feeding by absorption, chemosynthesis
E) Cell walls, feeding by absorption, and usually filamentous bodies
E
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Distinguish between exocrine and endocrine glands
What will be an ideal response?
Sulfa drugs like Bactrim, given for bacterial infections, inhibit bacteria by blocking folic acid synthesis. The precursor molecule of folic acid is para-amino benzoic acid (PABA). Interestingly, PABA has a structure very similar to a sulfa drug. If a sulfa drug is present, the bacterial enzyme will bind the sulfa drug because of structural similarity. This is an example of ________.
A. competitive inhibition B. noncompetitive inhibition C. catabolite repression D. enzyme repression E. enzyme induction
The molecule below is a(n)
A. glycerol.
B. polypeptide.
C. saturated fatty acid.
D. unsaturated fatty acid.
Which of the following is part of the light reaction?
A) carbon fixation B) reduction of carbon C) regeneration of NADP+ D) formation of waste products in the form of O2