"I seen you do that" and "Him and I rode to work together" are examples of good grammar

Which steel components have a greater possibility of buckling than other materials?

A. Steel arches B. Rigid frames C. Steel columns D. Steel suspension systems

A dark pigmented colony is isolated from the leg wound of a fisherman from Florida. The gram-negative rod grows on sheep blood and MacConkey agars. The organism provides the following reactions:

TSI: K/A Indole: no color change Lysine: no color change 1% NaCL: no growth Arginine: purple Ornithine: no color change DNase: pink halo around the area of organism inoculum The microbiologist cannot read the oxidase reaction due to the dark pigment. What can he do to help achieve a valid oxidase reaction? A) Grow the organism under anaerobic conditions and retest B) Grow the organism on a non-nutrient agar and retest C) The oxidase test is not necessary for the identification of this organism D) Perform a modified oxidase test