The sensor kinase for the OmpF: OmpC two-component regulatory system is ________.
A. the EnvZ protein
B. the OmpK protein
C. the MicF RNA
D. None of the choices are correct.
Answer: A
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What is the distribution of phenotypes from a cross of purple tall pea plants that are heterozygous for flower color and plant height? (Purple is dominant to white; tall is dominant to dwarf.)
A. 63 purple tall; 28 purple tall; 27 white dwarf; 7 white dwarf B. 132 purple tall; 138 white dwarf C. 54 purple tall; 6 white dwarf D. 100% purple tall E. 27 purple dwarf; 28 purple tall; 31 white dwarf; 29 white tall
Proteins whose conformations change when they are bound to an effector molecule are called
A) enzymes. B) allosteric proteins. C) regulatory proteins. D) activator proteins. E) inhibitory proteins.
Aminoglycosides act through which of the following mechanisms?
A. inhibition of protein synthesis B. disruption of cell wall synthesis C. inhibition of DNA synthesis D. inhibition of mRNA synthesis E. inhibition of nucleotide synthesis
Choose the receptor that is not correctly matched with its function.
A. Nociceptor: transmits signals that the brain interprets as pain B. Baroreceptor: monitors hydrostatic pressure in blood vessels C. Proprioceptor: monitors stretch of muscle fibers D. Peripheral chemoreceptor: monitors the pH of the cerebrospinal fluid E. Chemoreceptor: perceives taste and smell stimuli