What is the name given to the three bases in a messenger RNA that bind to the anticodon of tRNA to specify an amino acid placement in a protein?
A) anti-anticodon
B) protein
C) rho
D) cistron
E) codon
E
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Which of the following statements about oogenesis is false?
A. None of the answer options is false. B. It can take as long as 50 years for some primary oocytes to complete oogenesis. C. Primary oocytes form when a female is a fetus in her mother's uterus. D. Meiotic divisions are asymmetrical in oogenesis. E. Fertilization occurs before the final round of meiotic divisions in humans.
Tannins are chemicals that help plants repel invaders by
A. over-stimulating the predator. B. binding to proteins and thereby disrupting the predator's digestion. C. injuring the external covering of the predator's body. D. causing the predator to grow so rapidly that it dies. E. sedating the predator.
A biologic agent's incubation period is especially important for the paramedic to understand because:
A) the incubation period is directly related to the duration of the illness. B) most biologic agents have an incubation period of less than 24 hours. C) the patient may be contagious despite the absence of signs and symptoms. D) the incubation period determines how easily another person can be infected.
A mature walled ascus of an ascomycete usually contains
A. an egg and a sperm. B. many multinucleate conidia. C. eight diploid nuclei. D. eight haploid nuclei. E. a zygote.