Coliforms are ___________ bacteria that ferment lactose, producing both acid and gas.

A) Gram-positive
B) Gram-negative


B) Gram-negative
Feedback: Coliforms are Gram-negative bacteria that ferment lactose, producing both acid and gas.

Biology & Microbiology

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Which of the following would be true of an epithelium specialized for exchange by diffusion (e.g., a respiratory epithelium)?

A. thin with a relatively large surface area B. thick with a relatively large surface area C. thin with a relatively small surface area D. thick with a relatively small surface area E. thin with a small surface area/volume ratio

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Explain how the resulting phenotypic ratios from Mendel's dihybrid cross assisted him in framing his Second Law

What will be an ideal response?

Biology & Microbiology

Grazing ungulates are relatively common and burrowing rodents are relatively rare in temperate grasslands

Indicate whether the statement is true or false

Biology & Microbiology

Which of the following drugs specifically targets cell walls that contain mycolic acid?

A) vancomycin B) penicillin C) methicillin D) isoniazid E) bacitracin

Biology & Microbiology