The Voges-Proskauer test is associated with which of the following products?

A. Carbon dioxide, ammonium and water
B. Mixed acids
C. Indole
D. Acetoin
E. Water and oxygen


Ans: D. Acetoin

Biology & Microbiology

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Lactose transport by membrane proteins occurs under conditions in which the concentration of lactose inside the cell is higher than the concentration outside the cell. What type of transport is used to move lactose into the cell?

a. Simple diffusion b. Active transport c. Osmosis d. Facilitated diffusion

Biology & Microbiology

How has the avian lung adapted to the metabolic demands of flight?

A) Airflow through the avian lung is bidirectional like in mammals. B) There is more dead space within the avian lung so that oxygen can be stored for future use. C) Countercurrent circulation is present in the avian lung. D) Gas exchange occurs during both inhalation and exhalation.

Biology & Microbiology

Which type of leishmaniasis is an important opportunistic infection associated with HIV?

a) Cutaneous b) Mucocutaneous c) Visceral d) Systemic

Biology & Microbiology

The physical removal of microbes is called (antisepsis/degerming/disinfection).

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology