What is happening when someone sprays a bottle of perfume and fragrance spreads evenly throughout the room?

a. Effusion
b. Perfusion
c. Osmosis
d. Diffusion


d. Diffusion

Diffusion happens when someone sprays a bottle of perfume and fragrance spreads evenly throughout the room.

Biology & Microbiology

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Class I biological safety cabinets:

a. sterilize the air as it passes over the ma-terial in the cabinet. b. protect the environment from contamina-tion by biological agents by filtering the air as it is exhausted from the cabinet. c. are completely enclosed and have gloves that enable the worker to manipulate the material in the cabinet. d. are often called laminar flow hoods.

Biology & Microbiology

E. coli 0157:H7

A. is Gram-positive. B. is a normal constituent of the intestinal tract. C. does not ferment sorbitol. D. produces a toxin. E. does not ferment sorbitol AND produces a toxin.

Biology & Microbiology

The smallest arteries, called ________, are barely visible to the unaided eye

Fill in the blank(s) with correct word

Biology & Microbiology

Which of the following is a function of the skeletal system?

Production of red blood cells Regulation of body temperature Removal of metabolic waste Synthesis of vitamin D

Biology & Microbiology