Which of these organisms convert atmospheric nitrogen gas to a form that can be utilized by plants?

A) bacteria
B) protists
C) animals
D) fungi


A

Biology & Microbiology

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Which of the following is unique to prokaryotes?

a. chemoautotroph b. chemoheterotroph c. photoautotroph d. photoheterotroph e. chemoautotroph and photoheterotroph

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Compare and contrast positive and negative control of gene expression in bacteria

What will be an ideal response?

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In peas, a gene controls flower color such that R = purple and r = white. In an isolated pea patch, there are 36 purple-flowering plants and 64 white-flowering plants. Assuming Hardy-Weinberg equilibrium, what is the value of q for this population?

A) 0.36 B) 0.64 C) 0.75 D) 0.80

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How is a nerve impulse usually transmitted across a synapse from a presynaptic to a postsynaptic cell?

a) via a direct connection b) via Na+ ions c) via a neurotransmitter d) via a spark e) via plasmodesmata

Biology & Microbiology