Angiosperms are different from all other plants because only they have ___________.

A. a life cycle that involves alternation of generations
B. seeds
C. flowers
D. vascular tissue


C. flowers

Biology & Microbiology

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Which greenhouse gas can be generated in the guts of cattle?

a. carbon dioxide b. nitrous oxide c. oxygen d. chlorofluorocarbons e. methane

Biology & Microbiology

Sporulation generally occurs under which of the following circumstances?

A) when conditions are unfavorable or there are insufficient nutrients B) when microbes are exposed to a new, favorable environment C) when microbes are under little stress and can become dormant D) when resources become highly abundant

Biology & Microbiology

A certain biochemical reaction must be coupled to the hydrolysis of at least two ATP molecules (?G = -14.6 kCal) in order to occur. What is a possible ?G for this biochemical reaction?

A. ?G = +8 kCal B. ?G = +16 kCal C. ?G = -8 kCal D. ?G = -16 kCal E. ?G = -14.6 kCal

Biology & Microbiology

Tissue necrosis caused by Clostridium perfringens may be distinguished from necrotizing fasciitis in what way?

A) emission of foul-smelling gases from the damaged tissue B) presence of Gram-positive, endospore forming bacilli in the affected area C) emission of foul-smelling gases from the damaged tissue and presence of Gram-positive, catalase-negative cocci in the affected area D) presence of Gram-positive, catalase-negative cocci in the affected area E) presence of Gram-positive, endospore forming bacilli in the affected area and emission of foul-smelling gases from the damaged tissue

Biology & Microbiology