Of the ________ electrons released in Nitrosomonas europaea nitrification, ________ must return to AMO to continue ammonia oxidation, while ________ can be used either as reductants for biosynthesis or be donated to the electron transport chain to reduce the terminal electron acceptor, oxygen.

Fill in the blank(s) with the appropriate word(s).


four, two, two

Biology & Microbiology

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In the late 1960s, Carrell Williams and Karel Slama discovered that the insect Pyrrhocoris apterus, when grown in jars with paper towels made from balsam fir, underwent several extra larval molts and finally died without completing metamorphosis

Further investigation led to the conclusion that the fir trees synthesize a hormonal analog that acts as an insecticide. The molecule is actually an analog of juvenile hormone. Furthermore, the juvenile hormone analog discovered by Salma and Williams has no effect on most other metamorphosing insects, suggesting that: A. many insects reproduce as larvae. B. there has been some evolutionary divergence in the structure of juvenile hormone and in the juvenile hormone receptors of different insects. C. not all insects utilize juvenile hormone to stimulate metamorphosis. D. other insects have evolved methods to detect the juvenile hormone analog and are not found in balsam firs.

Biology & Microbiology

Pain projected by the brain back to a missing body part is called

a. phantom pain. b. referred pain. c. projected pain. d. erroneous pain. e. perceived pain.

Biology & Microbiology

The accommodation of the very long DNA strands that are part of a chromosome into the limited space of the nucleus is achieved by coiling the DNA around beads of histones into repeating subunits. These DNA-wrapped histones are called:

A. Solenoids B. Chromatin loops C. Rosettes D. Nucleosomes

Biology & Microbiology

Which portion of the neuron typically receives information?

A) Glia B) Axon C) Dendrite D) Synaptic terminal E) Cell body

Biology & Microbiology