Recombinant strains of this organism are released to colonize plant roots to produce an insecticide to destroy invading insects.
A. Escherichia coli
B. Pseudomonas fluorescens
C. Pseudomonas syringae
D. Thermus aquaticus
E. Saccharomyces cerevisiae
Answer: B
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A gene is a DNA sequence that codes for a protein or _____ product
a. RNA b. DNA
c. ribosomes d. a lipid e. exons
Allosteric enzymes ____
a. have regions that bind with inhibitor or activator molecules
b. are associated with important energy-carrying nucleotides c. are not affected by temperature or pH d. have two active sites e. have a broader range of working conditions
An excitatory postsynaptic potential
a. is only one of several types of graded potential. b. has a hyperpolarizing effect. c. will drive the membrane away from its potential. d. is summed with an inhibitory postsynaptic potential at the input zone of a neuron in a process known as synaptic integration. e. is none of these.
The regulatory systems of the animal body maintain a relatively stable internal condition through a process called ________.
A. countercurrent exchange B. equilibrium C. homeostasis D. osmoreception E. absorption