The lowest level of biological organization that can survive and reproduce is the ____
a. cell
b. tissue
c. proton
d. nucleus
e. DNA
a
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What condition is most likely when P. fluorescens, P. putida, or P. stutzeri, Brevundimonas spp., and Ralstonia spp. are isolated from respiratory specimens?
a. Person-to-person transmission should be suspected. b. Specimens come from immunocompetent individuals. c. The isolated bacteria may not represent a significant pathogen. d. The patient is in need of a lung transplant.
The neurons that are located in the brain and spinal cord are ____
a. motor neurons b. sensory neurons c. integrator neurons d. interneurons e. glial cells
In the presence of predators, some tadpoles grow larger and more colorful tails to avoid lethal strikes to the head. This ability to respond to the environment via morphological traits is known as
A) phenotypic plasticity. B) outcrossing. C) dioecious. D) K-strategy.
Which of the following binds to codons?
A) DNA B) Transfer RNA C) Messenger RNA D) RNA polymerase